Michael Roney
(University of Victoria)
6/15/14, 1:00 PM
Dugan O'Neil
(SFU Simon Fraser University (CA))
6/15/14, 1:10 PM
Garth Huber
(University of Regina)
6/15/14, 1:25 PM
Richard Teuscher
(University of Toronto (CA))
6/15/14, 2:45 PM
David Hanna
(McGill University)
6/15/14, 3:40 PM
Christopher Hearty
(University of British Columbia)
6/15/14, 4:00 PM
Randy Sobie
(University of Victoria (CA))
6/15/14, 4:20 PM
Hirohisa A. Tanaka
(University of British Columbia)
6/15/14, 4:50 PM
Dugan O'Neil
(SFU Simon Fraser University (CA))
6/16/14, 8:30 AM
Prof.
Reiner Kruecken
(TRIUMF)
6/16/14, 9:10 AM
Nigel Smith
(SNOLab)
6/16/14, 9:50 AM
Michael Roney
(University of Victoria)
6/16/14, 10:30 AM
Makoto Fujiwara
(TRIUMF (CA))
6/16/14, 10:50 AM
Michael Gericke
(University of Manitoba)
6/16/14, 11:05 AM
Clarence Virtue
(Laurentian University)
6/16/14, 11:20 AM
Darren Grant
(University of Alberta)
6/16/14, 11:30 AM
Itay Yavin
(New-York University)
6/16/14, 11:45 AM
David Morrissey
(TRIUMF)
6/16/14, 12:05 PM
Adam Ritz
(University of Victoria)
6/16/14, 12:15 PM
Michael Roney
(University of Victoria)
6/16/14, 12:35 PM
Nigel Smith
(SNOLab)
6/16/14, 1:00 PM
Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)
Plenary Speaker / Conférencier plénier
The field of astroparticle physics studies many of the major outstanding questions in contemporary astro-particle and sub-atomic physics, through the study of naturally created particles within the Universe. These questions range from "what makes up most of the Universe", through “what accelerates the most energetic particles in the Universe" to "why are we here at all?" These studies are...
Aristide Baratin
(University of Waterloo), Dr
Florian Girelli
(University of Waterloo)
6/16/14, 1:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
The definition of a quantum theory for gravity is a long standing problem. Currently, different approaches exist. In this talk, I will present the main ideas behind Loop Quantum Gravity and the Spinfoam frameworks. These are attempts to quantize directly General Relativity using respectively Dirac’s canonical quantization and Feynman’s path integral quantization.
I will give an overview of...
Dr
Gordon James
(CSA David Florida Laboratory)
6/16/14, 1:45 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
Two major themes in the ePOP ionospheric radioscience plan are the structure and dynamics of the three-dimensional distribution of density and plasma-wave processes. The e-POP wave instruments involved are the GPS Attitude, Position and Profiling (GAP) instrument, the Coherent Electromagnetic Radiation Tomography (CERTO) beacon, and the Radio Receiver Instrument (RRI)
The e-POP...
Prof.
Tami Pereg-Barnea
(McGill University)
6/16/14, 1:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Strongly interacting electron systems have fascinated the condensed matter community for a few decades. The addition of interactions to a model leads, in many cases, to new kinds of states, especially in low dimensional systems where fluctuations are pronounced. Notable examples are unconventional superconductivity and the fractional quantum Hall effect.
Spin orbit coupling, on the other...
Matthew Scott Rudolph
(University of Toronto (CA))
6/16/14, 1:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
The ATLAS experiment at the Large Hadron Collider includes a large program of Standard Model measurements covering a wide range of interactions and final state topologies including jets, charged leptons, and photons. Measurements of Standard Model processes are essential for comparison with theoretical calculations and modeling. This talk will present the latest results from ATLAS using...
Dr
Russell Mammei
(The University of Winnipeg)
6/16/14, 1:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
Ultracold neutrons are neutrons that have been cooled below 3 mK. At this temperature they travel at a speed less than ~8 m/s and exhibit the peculiar behavior of being able to be stored in magnetic, material, and gravitational bottles for periods ranging up to their beta-decay lifetime (~15 min). They present a new avenue for performing fundamental neutron experiments such as: searching...
Prof.
Melanie C.W. Campbell
(Physics and Atronomy, School of Optometry and Guelph Waterloo Physics Institute, University of Waterloo)
6/16/14, 1:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Non-Student) / orale (non-étudiant)
Imaging the retina may provide a “window on the brain”, potentially enabling diagnosis of neural conditions. Two of these are malaria and Alzheimer’s disease (AD). AD is a neuro-degenerative disease, characterized by the formation of insoluble fibrils (plaques) composed of amyloid beta proteins. There is currently no definitive diagnosis available prior to death. Neurotoxic effects of amyloid...
Prof.
Kimberley Hall
(Dalhousie University)
6/16/14, 1:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Femtosecond pulse shaping provides a flexible approach to tailoring the Hamiltonian governing the interaction of light with matter. Together with powerful adaptive feedback algorithms, this approach is now used routinely in the control of a variety of physical processes. For quantum computing applications, pulse shaping provides a means to optimize the speed and fidelity of elementary...
Prof.
R. J. LeClair
(Laurentian University)
6/16/14, 2:00 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
In our group we are devising wide angle x-ray scatter (WAXS) models for breast diagnostic applications. A major focus is to use the models in conjunction with energy dispersive x-ray scatter measurements on breast biopsies. A custom built WAXS system has been assembled and it provides quantitative differential linear scatter coefficients (MUs) to be obtained for samples. Comparison between...
Prof.
Andrew Yau
(University of Calgary)
6/16/14, 2:15 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
The launch of the Alouette I satellite on September 29, 1962, marked Canada’s entry into the space age. The successful launch on the CASSIOPE small satellite fifty-one years later to the day marks Canada’s return to the ionosphere. CASSIOPE carries two payloads: the Enhanced Polar Outflow Probe (e-POP), an 8-instrument scientific payload, and CASCADE, a communications technology demonstration...
Dr
Shelley Page
(University of Manitoba)
6/16/14, 2:15 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The Qweak collaboration has reported first results of a program of precision measurements of parity violating electron-proton scattering at small momentum transfer at Jefferson Laboratory[1]. Together with earlier measurements at higher momentum transfer, which are used to constrain hadronic corrections, this initial Qweak data set has provided the first experimental determination of the...
Santiago Batista
(University of Toronto (CA))
6/16/14, 2:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
In the ATLAS experiment the measurement of hadronic final states usually involves the detection of collimated cones of particles, more simply called *jets*.
Despite all the efforts at the hardware and software levels to correctly reconstruct the 4-momenta of jets, there is still room for improvement.
Many factors can influence the shapes and amounts of energy deposited in detectors; for...
Prof.
Ue-Li Pen
(University of Toronto, CITA)
6/16/14, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Recent implications of results from quantum information theory applied
to black holes has led to the confusing conclusions that requires
either abandoning the equivalence principle (e.g. the firewall
picture), or the no-hair theorem (e.g. the fuzzball picture), or even
more unpalatable options.
The recent discovery of a pulsar orbiting a black hole opens up new
possibilities for tests...
Dr
Joseph Maciejko
(Princeton University)
6/16/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Topological insulators are recently discovered states of matter that are electrically insulating in the bulk but support novel conducting boundary states that are exceptionally robust to perturbations. The physics of topological insulators is due to strong spin-orbit coupling and, despite its exotic character, is well understood in a single-particle picture where electron-electron interactions...
Nazanin Samadi
(U)
6/16/14, 2:30 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
K-Edge Subtraction (KES) is a powerful synchrotron imaging method that allows the quantifiable determination of a contrast element (i.e. iodine) and matrix material (usually represented as water) in both projection imaging and computed tomography. With living systems, a bent Laue monochromator is typically employed to prepare imaging beams above and below the contrast element K-edge which...
Garrin Mcgoldrick
(University of Toronto (CA))
6/16/14, 2:30 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The Standard Model predicts that top-antitop pairs produced through the strong interaction will have zero net longitudinal polarization due to parity conservation. Physics beyond the Standard Model could allow for non-parity conserving top-antitop pair production which would produce a net polarization signal at the Large Hadron Collider. I will present a measurement of the average polarization...
Prof.
Carlos Silva
(Université de Montréal)
6/16/14, 2:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
In high-$Q$ microcavities, non-perturbative mixing of the highly confined electromagnetic field and exciton resonances results in new quasi-particles termed exciton-polaritons. These are composite bosons with very low effective mass ($< 10^{-4} m_e$). Above a certain critical density and below a critical temperature, these can undergo Bose-Einstein Condensation (BEC), resulting in macroscopic...
Esmat Elhami
(U)
6/16/14, 2:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Non-Student) / orale (non-étudiant)
Positron emission tomography (PET) is an essential tool for in vivo
molecular imaging, due to its high sensitivity. Combined with the unparalleled soft tissue contrast of magnetic resonance imaging (MRI), PET–MRI allows for accurate quantification required for cell tracking studies. The purpose of this study is to develop a landmark based image registration program capable of fiducial...
Doug Schouten
(TRIUMF (CA))
6/16/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
This contribution will present the latest results on the Higgs searches performed with the ATLAS detector, including beyond the Standard Model (BSM) Higgs searches, as well as the recently discovered Higgs particle consistent with the Standard Model (SM). Special attention will be given to the decays of the Higgs particle to gauge bosons.
Prof.
Ion Garate
(Université de Sherbrooke)
6/16/14, 2:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Recent years have witnessed the unexpected discovery of novel topological phases in certain electrically insulating and semimetallic solids whose low-energy bulk excitations are Dirac fermions.
Topological phases in these ‘‘Dirac materials’’ are characterized
by nonzero integers (topological invariants), which
manifest themselves through peculiar and robustly gapless
states localized at...
Prof.
David Knudsen
(University of Calgary)
6/16/14, 2:45 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
The ePOP Suprathermal Electron/Thermal Ion Imager (SEI/SII) uses a microchannel-plate-intensified CCD-based detector to record 2-D (energy/angle) electron distribution functions having a nominal energy range of 2-200 eV, and ion distributions at energies that include the ambient ionospheric population ($<1$ eV) and extending up to 100 eV. At the highest measurement resolution, distribution...
Robert Mann
(U)
6/16/14, 2:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
The cornerstone of thermodynamics is the first law, which for a black hole
identifies thermodynamic energy with its mass, temperature with its surface
gravity, and entropy with its area. Recent work that posits the
identification of a cosmological constant with thermodynamic pressure results
in black holes behaving somewhat like chemical systems, with pressure-volume
terms appearing in...
Dr
Katerina Katsika
(TRIUMF)
6/16/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
For more than half a century now, the neutron Electric Dipole Moment (nEDM) experiments have ruled out more CP-violation theories than any other violating type of experiments in history of physics. All the new generation nEDM experiments use a modified NMR technique and are aiming to reduce the current upper limit by one to two orders of magnitude by means -among others- of improving the...
Collin Tiessen
(U)
6/16/14, 3:00 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
A crossed electron-gas beam system coupled to a VUV spectrometer has been used to investigate the dissociation of thymine (C5H6N2O2) into excited atomic fragments in the electron-impact energy range from threshold to 375 eV. A special stainless steel oven is used to vaporize the thymine and form it into a beam where it is intersected by a magnetically collimated electron beam, typical current...
Arundhati Dasgupta
(University of Lethbridge)
6/16/14, 3:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
We formulate quantum field theory in accelerated frames using Prigogine transformations. We then derive a background independent formulation of such transforms, and attempt a new formulation of quantum gravity.
Kendall Mahn
(TRIUMF)
6/16/14, 3:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
One of the most promising investigations of
beyond-the-Standard-Model physics has been the study of neutrino
oscillation, that is, the conversion of neutrinos from one flavor to
another as they propagate. While neutrino oscillation is studied in a
wide variety of laboratories, the strongest constraints on the
neutrino oscillation mixing parameters, theta23 and Dm2(32) come from
long...
Prof.
Alex Brown
(Department of Chemistry, University of Alberta)
6/16/14, 3:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
The use of tailored laser pulses to control chemical processes has received much attention over the last 25 years, in part due to the rapid development of experimental pulse shaping techniques. This has permitted studies of control in an ever widening array of systems with increasing complexity (i.e., dimensionality for molecules). In this talk, I will present our computational approach for...
Steven Robertson
(McGill)
6/16/14, 3:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
Since the end of data taking in 2008, the BABAR experiment at the SLAC National Accelerator Laboratory, along with its Japanese counterpart, Belle, has continued to produce interesting scientific results spanning a broad range of topics in heavy flavour physics, QCD and searches for physics beyond the standard model. In this talk I will discuss ongoing activities of the BABAR collaboration...
Alexandros Gezerlis
(University of Guelph)
6/16/14, 3:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
I will first go over the status of modern nuclear theory, especially in connection with first-principles studies of strongly interacting nucleons. After some general points on the underlying theory of Quantum Chromodynamics (QCD), I will go over the efforts toward connecting QCD with many-nucleon studies (via chiral Effective Field Theory [EFT]). I will then introduce a recent local...
Robert Rankin
(U)
6/16/14, 3:45 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
Pc5 waves with toroidal and poloidal electric fields are ubiquitous in Earth’s magnetosphere and are often present in the recovery phase of geomagnetic storms. We present results of simulations of Pc5 wave-particle interactions and show how they can be used to explain Cluster (1) and Van Allen Probes (2) observations of shock-initiated outer radiation belt electron flux enhancements and...
Prof.
Jeffrey Quilliam
(Université de Sherbrooke)
6/16/14, 3:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
The quantum spin liquid (QSL) is a quantum entangled and dynamical ground state of a magnetic material with strange fractional excitations. This enticing phenomenon was predicted decades ago to occur in materials with competing (frustrated) interactions. However, the road to discovering real materials of this nature is a long one and it is only recently that we have access to several good QSL...
Dr
Gregory Christian
(TRIUMF)
6/16/14, 3:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The DRAGON facility at TRIUMF measures radiative proton and alpha capture reactions relevant to nucleosynthesis in a variety of astrophysical scenarios. DRAGON experiments are performed in inverse kinematics, taking advantage of the intense radioactive and stable beams available at TRIUMF. In this talk, I will present an overview of recent activities at DRAGON, which include the first...
Prof.
Carl Svensson
(University of Guelph)
6/16/14, 3:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
High-precision measurements of the ft-values for superallowed Fermi beta decays between nuclear isobaric analogue states provide a number of demanding tests of the electroweak Standard Model, including confirmation of the Conserved Vector Current (CVC) hypothesis at the level of 1.3 parts in 10,000, the most stringent limits on weak scalar current contributions, and the most precise...
Prof.
Eduardo Galiano
(Laurentian University)
6/16/14, 3:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
Purpose: The purpose of this work was to calculate the dose accidentally absorbed by a live fetus during a diagnostic CT procedure to a pregnant patient, and to assess the likelihood that the premature termination of the pregnancy was radiation-induced.
Methods: A patient underwent a diagnostic CT procedure as part of her initial clinical work up for stage II cervical cancer. At the time of...
Svetlana Barkanova
(Acadia University)
6/16/14, 3:45 PM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
We all agree that systematic science outreach in high schools is absolutely imperative. But how should we do it? And perhaps as important, who should be doing it? There may be many benefits for increasing the role of postsecondary students in outreach, such as a smaller age gap and better familiarity with the local high school audiences, but lack of literature in the area highlights the need...
Prof.
Christopher Hearty
(University of British Columbia/IPP)
6/16/14, 4:15 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
Belle-II will probe the flavour sector of particle physics at the high-luminosity SuperKEKB e+e- collider, located at the KEK laboratory in Japan. Physics operations will start in late 2016, with the goal of collecting by 2022 thirty times the combined integrated luminosity of the two previous generation B-factories, PEP-II at SLAC and KEKB at KEK. This precision-frontier facility will open an...
Mr
Vincent Wanie
(INRS-EMT/ALLS)
6/16/14, 4:15 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Intense femtosecond (10-15s) laser pulses can induce molecular dissociation via a broad range of pathways involving different electronic states. Furthermore, breaking the symmetry of a laser field allows control of these processes via the steering of electron motion, which is accomplished by superimposing electronic states of different parity. The symmetry break can be obtained, for example,...
Paul Finlay
(Katholieke Universiteit Leuven (BE))
6/16/14, 4:15 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
High-precision half-life and branching-ratio measurements for the superallowed $\beta^+$ emitter $^{26}\mathrm{Al}^m$ were performed at the TRIUMF-ISAC radioactive ion beam facility located in Vancouver, Canada. The branching ratio measurement was performed with the 8$\pi$ Spectrometer, an array of 20 high-purity germanium detectors, in conjunction with SCEPTAR, a plastic scintillator array...
Glenn Hussey
(University of Saskatchewan)
6/16/14, 4:15 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
The Cascade Small-Sat and Ionospheric Polar Explorer (CASSIOPE) satellite was successfully launched and began operations in late September of 2013. The suite of 8 scientific instruments on CASSIOPE comprise the enhanced Polar Outflow Probe (ePOP). One instrument is the Radio Receiver Instrument (RRI) which is used to measure radio waves, from 10 Hz to 18 MHz, on two crossed 6-m dipole...
Dr
Patrick Clancy
(University of Toronto)
6/16/14, 4:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
We have performed resonant inelastic x-ray scattering (RIXS) measurements on epitaxial thin film samples of the layered perovskite iridates Ba$_2$IrO$_4$ and Sr$_2$IrO$_4$. These compounds display a novel J$_{eff}$ = 1/2 Mott insulating ground state driven by strong 5d spin-orbit coupling effects. By studying 10 to 50 nm thin film samples grown on a variety of different substrates (GSO, STO,...
Dr
Jennifer Fallis
(TRIUMF)
6/16/14, 4:15 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
The photo-disintegration process (*p*-process) is thought to be the primary method by which the rare *p*-nuclides (stable isotopes that cannot be produced by either the slow (*s*) or rapid (*r*) neutron capture processes) are produced. This process occurs in the high temperature environments in the late stages of massive stars and in their subsequent explosion as core collapse supernovae. ...
Jeff Frimeth
(Xspect Inc.)
6/16/14, 4:15 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
Medical Physics residencies serve as an excellent bridge between putting together the didactic knowledge obtained from a graduate program with practical experience in a Medical Physics sub-specialty. Most residency programs are within the Radiation Therapy sub-specialty, although Diagnostic Imaging-based residencies are slowly starting to become more prevalent over recent years. Residency...
Dr
Mark Scott
(TRIUMF)
6/16/14, 4:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
Measurements of the neutrino oscillation parameters have improved markedly in the last three years, with recent results from T2K casting the first light on possible CP violation in the lepton sector. For these oscillation measurements, systematic errors are becoming as important as the statistical error, and neutrino cross section uncertainties are a major contributor to the total systematic...
Daria Ahrensmeier
(Simon Fraser University)
6/16/14, 4:15 PM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
Simon Fraser University, like other universities, has offered an orientation day for teaching assistants for many years. While many of the sessions are aimed at a general audience, physics and other science students usually
consider them to be not very useful. To address their needs, we - two
faculty members and an educational developer - developed a 6-hour
program designed specifically...
Randy Lewis
(York University)
6/16/14, 4:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Lattice simulations have an impact that reaches into several aspects of QCD and nuclear physics as well as the standard model of particle physics and theories beyond. A selection of recent examples will be reviewed.
Graeme Morgan
(U)
6/16/14, 4:30 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The astrophysical r-process is thought to be responsible for the formation of almost half the elements in the universe heavier than iron. The r-process reaction path is located on the neutron-rich side of the chart of the nuclides approaching the neutron drip line. Reaction rates of the r-process and the location of the path are dependent on the neutron separation energies of the nuclei. As...
Prof.
Michel Gingras
(University of Waterloo)
6/16/14, 4:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
In some magnetic systems, known as frustrated magnets, the lattice geometry or the competition between different spin-spin interactions can lead to a sub-exponentially large number of accidentally degenerate classical ground states, or false vacuua, and thus a sort of landscape problem for condensed matter physicists. Order-by-disorder (OdD) is a concept of central importance in the field of...
Sophie Berkman
(University of British Columbia)
6/16/14, 4:30 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Super Kamiokande is a large water Cherenkov detector that is used to detect neutrino interactions and measure neutrino oscillation parameters. In Super Kamiokande charged particles are identified by classifying the rings of Cherenkov light, traditionally as either electron-like with a fuzzy ring edge, or as muon-like with a sharp ring edge. A maximum likelihood reconstruction algorithm now...
Joseph Sanderson
(University Waterloo)
6/16/14, 4:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
One of the primary objectives of science is to extend our senses to the smallest realms and to observe processes which occur on the fastest time scales. Coulomb explosion imaging using femtosecond, few cycle, laser pulses has been able to make measurements of the structure of small molecules on the angstrom length scale and observe their dynamics on the timescale of a few femtoseconds. ...
Dr
Juris Svenne
(University of Manitoba)
6/16/14, 4:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
A Multi-Channel Algebraic-Scattering (MCAS) method that was developed in 2003 for the analysis of low-energy nuclear spectra and of resonant scattering has continued to be effectively used for nuclear-structure studies. The focus now is on nuclei away from the valley of stability. Such nuclei are the subject of experimental study at Radioactive Ion Beam (RIB) facilities, and may have...
Mr
David Miles
(University of Alberta)
6/16/14, 4:45 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Invited Speaker / Conférencier invité
The scientific objective of the Enhanced Polar Outflow Probe (e-POP) is to study plasma outflows, neutral atmospheric escape, and associated effects of auroral currents and plasma microstructures on radio propagation at an unprecedented level of detail. Field-aligned currents are an important coupling process between the Earth’s magnetosphere and the polar ionosphere. Field-aligned currents...
Dr
Adam Garnsworthy
(TRIUMF)
6/16/14, 4:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
Several groups from universities across Canada are collaborating on the GRIFFIN (Gamma-Ray Infrastructure For Fundamental Investigations of
Nuclei) project to significantly upgrade the decay spectroscopy capabilities at TRIUMF-ISAC. GRIFFIN will replace the HPGe aspect of the 8pi spectrometer with an array of 16 large-volume hyper-pure germanium clover detectors instrumented with a...
Michelle Dunlop
(U)
6/16/14, 4:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
High precision measurements of superallowed Fermi beta transitions between 0$^+$ isobaric analogue states allow for stringent tests of the electroweak interaction described by the Standard Model. Particularly, these transitions provide an experimental probe of the unitary of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the Conserved-Vector-Current (CVC) hypothesis, as well as set limits on...
6/16/14, 4:45 PM
Physics Education / Enseignement de la physique (DPE-DEP)
Mr
Robert Seddon
(McGill University)
6/16/14, 4:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The decay $B^-$ $\rightarrow\Lambda\bar{p}\nu\bar{\nu}$ is a semileptonic, flavour-changing-neutral-current decay. It proceeds exclusively through one-loop box and penguin diagrams and is therefore expected to be heavily suppressed ("rare") within the context of the Standard Model (SM) with a predicted branching fraction of $(7.9 \pm 1.9) \times 10^{-7}$. The possibility of new physics...
Mike Oliver
(Health Sciences North)
6/16/14, 4:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
Stereotactic Body Radiation Therapy (SBRT) is a new radiation treatment technique characterized by high dose per fraction (6-30 Gy), a limited number of fractions (1-6) and very accurate and radiation treatments that tightly conform to the disease. SBRT was first reported in Sweden in 1995 and due to favourable clinical evidence has recently spread to a number of disease sites including lung,...
Dr
Anthony Hillairet
(University of Victoria)
6/16/14, 4:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The neutrino oscillation measurement made by the Tokai-To-Kamioka (T2K) experiment
relies greatly on the measurements of the neutrino flux and cross sections
from its near detector, ND280.
This measurement will be even more crucial when T2K operates
with an anti-neutrino beam to investigate CP violation in the neutrino sector.
In this mode, the muon neutrino component of the beam will be...
Prof.
Jeffery Martin
(The University of Winnipeg)
6/16/14, 5:00 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
The neutron electric dipole moment (EDM) experiment at TRIUMF aims to constrain the neutron EDM to the 1 x 10^{-27} level in its initial phase of operation. At this level of precision, magnetic stability must be measured at the tens of fT level in the 1 uT operating field of the experiment. Comagnetometers based on Hg-199 and Xe-129 will be used to measure this stability in real time inside...
Usman Rizwan
(Simon Fraser University)
6/16/14, 5:00 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Gamma-Ray Infrastructure For Fundamental Investigation of Nuclei (GRIFFIN) is a state-of-the-art facility for spectroscopic studies following nuclear decay being built at TRIUMF, Vancouver, B.C. It will accommodate 16 detectors, each made of four high purity Germanium crystals arranged in a clover configuration. GRIFFIN's efficiency will allow decay spectroscopy studies to be extended to...
Marvellous Onuma-Kalu
(University of Waterloo)
6/16/14, 5:00 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
We propose a technique to probe a quantum state of light in an optical cavity without significantly perturbing the photon field. We minimize the interaction of the probe with the field by arranging a setting where the largest contribution to the transition probability is cancelled. We show that we obtain very good resolution for measuring the photon population difference between any given...
Prof.
Jean Barrette
(McGill University)
6/16/14, 5:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
The phase transition from hadronic to partonic degrees of freedom in ultra-relativistic nuclear collisions is a central focus of experiments at the LHC. Heavy-flavor quarks are an ideal probe to study early dynamics in ultra-relativistic nuclear collisions. This contribution will present new results on the effects of strong longitudinal colour electric fields (SCF), shadowing, and quenching on...
Ms
Racha Cheaib
(McGill University)
6/16/14, 5:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Flavour changing neutral current B meson decays, such as $B^{\pm}\to K^{\pm}\tau^{+}\tau^{-}$, are a powerful probe of physics beyond the Standard Model (SM). Comparison of the experimentally measured rate to SM predictions can provide evidence for new physics. Deviations from the SM prediction might arise due to hypothetical heavy particles such as Supersymmetric quarks or bosons or a...
Jordan Myslik
(University of Victoria)
6/16/14, 5:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The neutrino oscillation measurements performed by the
Tokai-To-Kamioka (T2K) experiment are dependent on the energy spectrum
of the neutrino beam, as well as neutrino cross section model
parameters. Measurements made at the near detector (ND280) provide
important constraints on these quantities. This talk will discuss how
these constraints are derived from ND280 measurements, and show...
Ian Michael Nugent
(RWTH-Aachen)
6/16/14, 5:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The tau lepton is the heaviest of the known charged leptons and therefore provides a unique tool to probe electroweak interactions, low energy QCD and for searching for new physics. New physics may appear in decays with tau leptons in the final state or in decays of the tau lepton. A key ingredient for any physics programs involving the tau lepton is the modeling of the decay structure. In...
Jonathan R. Ellis
(CERN)
6/16/14, 7:30 PM
Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)
Plenary Speaker / Conférencier plénier
Where do we come from? What are we? Where are we going? The discovery of the Higgs Boson at the LHC provides new insights into these basic questions about the Universe, marking the start of a new era in fundamental physics, and opening new vistas in astrophysics and cosmology as well as particle physics.
Nicolas Quesada
(University of Toronto)
6/17/14, 8:45 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Parametric down-conversion (PDC) and frequency conversion (FC) are two of the most common nonlinear processes used in quantum optics. In the first process a nonlinear crystal is used to down convert photons from a pump laser into pairs of photons correlated by energy and linear momentum conservation constraints. In the second process, the frequency of photons is increased or decreased after...
Prof.
Harald Pfeiffer
(CITA, University of Toronto)
6/17/14, 8:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Advanced Gravitational Wave Detectors like Advanced-LIGO are expected to commence searches for gravitational waves as early as 2015. One of the prime sources for these instruments is the in spiral and coalescence of binary black holes. Numerical simulations of binary black holes play an integral role in this effort, and have matured now sufficiently to begin to address the most general case...
Mercedes Martinson
(U)
6/17/14, 8:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
X-ray phase based imaging is becoming increasingly important due to the high contrast that can be obtained from soft tissues. A number of synchrotron facilities use phase contrast routinely for imaging of biomedical systems. One of the simplest and most used phase contrast method is in-line or propagation based phase contrast. Due to the small beam size available from synchrotron sources...
Dr
Florian Urs Bernlochner
(University of Victoria (CA))
6/17/14, 8:45 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
I'll report the current status of Higgs property measurements from the Large Hadron Collider experiments ATLAS & CMS. In particular, I'll review the determinations of couplings from combined fits to the individual H -> bosons and H -> fermions channels. Further, the results of hypothesis tests to verify the spin 0 nature of the Higgs and the current knowledge of differential cross section measurements.
J. Steven Dodge
(Simon Fraser University)
6/17/14, 8:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Fermi liquid theory predicts that electron-electron scattering will contribute $\rho_{e-e}(\omega,T)=A \left[(\hbar\omega)^2+b(\pi k_B T)^2 \right]$ to the frequency-dependent resistivity of any metal at low temperatures and frequencies. In its simplest form, the theory further predicts that the temperature and frequency dependence are related by $b=4$, but numerous experimental studies have...
Svetlana Barkanova
(Acadia University)
6/17/14, 8:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
Although the Electroweak Standard Model of Particle Physics has been enormously successful to date, we known it is incomplete. High-precision parity-violating electroweak experiments can provide access to new physics at a wide range of energy scales and play an important complementary role to the LHC research program.
The talk will provide an overview on the past, present and future of...
Prof.
Jens Dilling
(TRIUMF/ University of British Columbia)
6/17/14, 8:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The TITAN (Triumf's Ion Trap for Atomic and Nuclear science) system is set up the ISAC rare beam facility at TRIUMF and enables precision experiments on very short-lived rare species. I present new measurements of atomic masses for nuclear structure in the so-called Island of Inversion, and for light Mg isotopes, where tests of the IMME were possible. The latter allowed for tests of the...
Prof.
Pandurang Ashrit
(Université de MOncton)
6/17/14, 8:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Transition metal oxides (TMO) with their metastable multiple oxidation states offer a wide range of optical and electrical switching properties. Chromogenic materials are characterized by their ability to undergo a reversible change in their optical properties under the application of a small external force in the form of heat, light or an electric field. Hence, TMO based chromogenic materials...
Dr
Douglas Arion
(Carthage College)
6/17/14, 8:45 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Invited Speaker / Conférencier invité
Studying physics (or any other subject...) because you love it is great. There are many career paths available to those who have studied physics, but there are skills, knowledge, and attitudes that physics education, by itself, doesn’t typically provide to prepare students for the real world that they will enter – no matter what that career path may be. Entrepreneurship education is the key to...
Mathieu Laliberté
(I)
6/17/14, 9:00 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Identification of cancer cells in tumors is still a challenge in the biomedical field. Coherent Anti-Stokes Raman Scattering (CARS) microscopy may be useful for fast retrieval of 3D imaging and to distinguish cancer cells from the non-cancerous environmental cells as it is a label-free imaging technique that is capable of real-time, non-pertubative examination of living cells and organisms...
Stephane Virally
(Ecole Polytechnique de Montreal)
6/17/14, 9:00 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Entangled photons are a very useful resource for quantum optics experiments. Entanglement is usually obtained through nonlinear parametric effects, such as modulation instabilities in optical fibres. We show that the coherence properties of the pump laser greatly affects the efficiency of third-order parametric effects. We present a model for incoherent nonlinear processes in optical fibres...
Dr
Hari Kunduri
(Dept of Mathematics and Statistics, Memorial University)
6/17/14, 9:15 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Black holes are one of the most interesting theoretical predictions of general relativity. They arise as solutions to Einstein's equations which govern the classical gravitational field, generally described by a small number of parameters - mass, charge, and spin. A particular subset has recently attracted a great deal of attention: extremal black holes. For fixed mass, they are characterized...
Dr
Ian D'Souza
(COM DEV International Systems)
6/17/14, 9:15 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Invited Speaker / Conférencier invité
All physicists are told that physics is the foundation of subjects such as engineering. One might be led to believe that thus, finding a job as a physicist would be as easy, if not easier, than as an engineer. Sadly, this is far from the truth in the real world. Graduating with a degree in theoretical physics makes it even more difficult to get an industrial job - though, one may question...
Stefania Gori
6/17/14, 9:15 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
2012 has been an extremely exciting year for particle physics. The Large Hadron Collider (LHC) at CERN discovered a new particle: the Higgs boson. In this talk I review the properties of this newly discovered particle. In particular, I will present the basics of electroweak symmetry breaking in the Standard Model (SM), that lead to the Higgs discovery. After that, I will discuss how New...
Jayanayana Perera
6/17/14, 9:15 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The influence of disorder on correlated electron systems remains poorly understood. Recent work [1], [2] by Johri and Bhatt shows singular behavior in the density of states (DOS) of non-interacting disordered systems. This is surprising because there was a significant and unsuccessful effort to find a singularity in the DOS after Anderson’s prediction of localization in 1958. Furthermore, in...
Cornelia Hoehr
(TRIUMF)
6/17/14, 9:15 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
One of TRIUMF's main objectives is to develop isotopes for use across applications in science and medicine. The nuclear medicine division has a long history of producing short-lived F-18 and C-11 as Positron Emission Tomography (PET) tracers for the Pacific Parkinson's Research Centre. Recently, we have expanded to investigate the production of isotopes to help address looming shortages of...
Mr
Johannes Lang
(II. Physikalisches Insitut, Justus-Liebig-Universität Giessen)
6/17/14, 9:15 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
Mass spectrometry is a technique, which was developed more than hundred years ago. It led to epochal discoveries and contributed to the foundation to what is now called nuclear and particle physics. Nowadays mass spectrometry is also applied as analytical tool in many directions of science, e.g. in chemistry, biology, geology, space science and many other fields. Time-of-Flight (TOF) mass...
Mr
Renjie Liu
(Lakehead University)
6/17/14, 9:15 AM
Surface Science / Science des surfaces (DSS)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The functionalization of semiconductor surfaces with organic molecules is a necessary step in the development of hybrid organic-semiconductor structures. A significant challenge to organic layer formation is the fact that semiconducting surfaces exhibit a large number of dangling bonds which suppress the diffusivity of adsorbed molecules and can even break the molecules apart via the...
Mr
Mark Mccrea
(University of Manitoba)
6/17/14, 9:15 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The n3He experiment aims to measure the parity violating asymmetry in the direction of proton emission from longitudinally polarized cold neutrons capturing on an unpolarized $^3$He target in the reaction $\vec{n}+^{3}He\rightarrow p+T$. The size of the asymmetry is estimated at $(-9.5)- 2.5\times 10^{-8}$. The goal is to measure this asymmetry with an accuracy of $2\times10^{-8}$ to provide...
Adrian Del Maestro
(University of Vermont)
6/17/14, 9:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
We present a scalable algorithm for computing Rényi entanglement entropies in systems of itinerant bosons in the spatial continuum via quantum Monte Carlo. This method is applicable to the study of spatial mode entanglement, particle partitioned entanglement, and the entanglement of particles under a spatial partitioning. We demonstrate its utility by studying a non-trivial interacting Bose...
Andrei Venter
6/17/14, 9:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We demonstrate a facile and cost effective method to obtain gold nanoparticles on graphene by dispersing Au144 molecular nanoclusters by spin coating them in thin layers on graphene-based films and subsequent annealing in a controlled atmosphere. The graphene-based thin films used for these experiments are prepared by solvent-assisted exfoliation of graphite in water in the presence of...
Prof.
John Sipe
(Department of Physics, University of Toronto)
6/17/14, 9:30 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Nonlinear polarizations described by the χ(2) and χ(3) susceptibilities are central to many of the phenomena of classical nonlinear optics, including processes as diverse as second harmonic generation and four-wave mixing. These same susceptibilities govern quantum optical processes in which correlated photons are generated, such as spontaneous parametric down-conversion and spontaneous...
Michael Gericke
(University of Manitoba)
6/17/14, 9:30 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
The NPDGamma experiment has completed a measurement of the parity-violating directional gamma-ray asymmetry in the capture of cold neutrons on protons in a liquid hydrogen target. The asymmetry is directly related to the weak pion-nucleon coupling constant $h^1_{\pi}$, within the framework of the meson exchange model, and it is related to the effective field theory couplings $\tilde C^{\pi}_6$...
Mr
Jacobus Van Nieuwkoop
(SFU Simon Fraser University (CA))
6/17/14, 9:45 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
In July of 2012, the ATLAS and CMS experiments at the Large Hadron Collider announced the discovery of a new particle that is consistent with the Standard Model Higgs boson produced by gluon fusion. However, in order to avoid problematic divergences at high energies, the Standard Model also requires that the Higgs boson couples to the weak vector bosons. As a result, the search for the Higgs...
Mr
Andrew Senchuk
(University of Manitoba)
6/17/14, 9:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
There is currently no method to experimentally determine the absolute charge radius of nuclei for elements that have no stable or extremely long-lived isotope: The standard methods, electron scattering and muonic atom spectroscopy, require macroscopic amounts of the isotope under investigation. Thus, for nuclei with charge Z > 83, (uranium is the exception), there is no experimental data for...
Steven Rehse
(University of Windsor)
6/17/14, 9:45 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
The Department of Physics at the University of Windsor offers three streams within our B.Sc. Honours Physics degree program: General Physics, Physics and High Technology, and Medical Physics. Of these programs, the latter two are both targeted specifically toward students interested in non-academic careers (NAC). As of the Fall of 2013 these students comprised 57% of the undergraduate...
Oussama Moutanabbir
(Ecole Polytechnique de Montreal)
6/17/14, 9:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Semiconductor nanowires (NWs) are quasi-one-dimensional nanostructures that have sparked a surge of interest as powerful and versatile building blocks for an extended range of emerging nanoscale technologies. These novel technologies exploit size-related effects, the flexibility in the fabrication and design offered by the use of NWs, and the concomitant progress in probing nanoscale...
Mr
Nils Deppe
(University of Winnipeg)
6/17/14, 9:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
String theory provides motivation to investigate critical phenomena in microscopic black hole formation in higher dimensional gravity theories. We investigate gravitational collapse in higher dimensional spherically symmetric Einstein and Einstein-Gauss-Bonnet (EGB) gravity. Our previous work has suggested the existence of a mass gap in odd dimensional EGB gravity. With adaptive mesh...
Art on behalf of ALPHA Collaboration Olin
(TRIUMF)
6/17/14, 9:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
Cold antihydrogen promises a unique opportunity to study the properties of atomic antimatter, and via comparisons with its well-studied matter-counterpart, the possibility to test fundamental symmetries such as CPT invariance. We report the first observation of positron spin flip transitions between hyperfine levels of ground state antihydrogen and the first experimental constraint on the...
Marie-Andrée Houle
(INRS)
6/17/14, 9:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Osteoarthritis is a debilitating and painful disease involving the dysfunction and degradation of joint tissue. It affects mainly the knees and the hips and the most widely recognised change in the cartilage is the loss of the proteoglycans and the degradation of the articular cartilage. The irreversible stage of this degeneration is thought to be damage to the collagen type II meshwork, which...
Bryan van der Ende
(Atomic Energy Canada Ltd.)
6/17/14, 10:00 AM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Non-Student) / orale (non-étudiant)
A Monte-Carlo simulation via the MCNP computer program is a convenient method of indirect detector calibration when a direct calibration is not feasible. This is the case when very-short-lived gaseous radioactive sources are involved. Before being relied on, the MCNP model is normally validated with commercially available calibrated radioactive sources. This presentation will discuss the...
Ms
Lori Rebenitsch
(University of Winnipeg/University of Manitoba)
6/17/14, 10:00 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Matter domination over anti-matter in the universe is not explained by the Standard Model. Extensions to the standard model which could account for this lack of anti-matter introduce larger amounts of CP-violation. If neutrons have larger Electric Dipole Moments (EDMs) than predicted by the standard model, this would indicate one source of CP-violation. To measure the neutron EDM to high...
Prof.
Benjamin Sussman
(National Research Council)
6/17/14, 10:00 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Wilson Brenna
(University of Waterloo)
6/17/14, 10:00 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The definition of a meaningful thermodynamic mass (appearing in the first law and the Smarr relation, when a cosmological constant is taken into account) is a difficult concept in Lifshitz symmetric spacetimes, due in part to the boundary conditions that need to be satisfied. Knowing such a mass opens up opportunities for examining the critical behaviour of these black holes which is...
6/17/14, 10:00 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Steffen Henkelmann
(University of British Columbia (CA))
6/17/14, 10:00 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The physics program of the ATLAS experiment pursued at the Large Hadron Collider (LHC) at CERN succeeded in the observation of a new particle in the search for the Standard Model Higgs boson. The Higgs boson production in association with a top-quark pair provides key features to further investigate the nature of the Higgs boson. Its coupling to other bosons was discovered and evidence for its...
Jason Park
(University of British Columbia/TRIUMF)
6/17/14, 10:15 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The heaviest doubly-magic and self-conjugate nucleus $^{100}$Sn is known for its super-allowed Gamow-Teller decay with the smallest $\log ft$ value
and providing experimental data for quenching effects and $rp$-process path models. In addition, $^{100}$Sn and its
neighbouring species offer valuable insights for nuclear structure.
Gamma-ray spectroscopy of $^{100}$Sn
and nuclei in its...
Melanie Martin
(University of Winnipeg (Physics) and Manitoba (Radiology, Physics & Astronomy))
6/17/14, 10:15 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
We have developed a new method for distinguishing the size of submicron structures using diffusion weighted magnetic resonance imaging (MRI). This method relies on MRI signal changes because water in samples undergoes diffusion. The mean-square displacement of the water molecules depends on the diffusion time. Molecules diffusing in a uniform medium with no barriers experience unrestricted...
Mr
Michael Lang
(The University of Winnipeg, The University of Manitoba)
6/17/14, 10:15 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
If a non-zero neutron electric dipole moment (nEDM) were discovered, it would signify a previously unknown source of CP (or T) violation. New sources of CP violation are believed to be required to explain the baryon asymmetry of the universe. The TRIUMF nEDM experiment aims to measure the nEDM to the level $10^{-27}~e\cdot$cm in its initial phase, which is over an order of magnitude more...
David Anthony Demarco
(University of Toronto (CA))
6/17/14, 10:15 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
An overview will be presented of a search for the Standard Model Higgs boson produced in association with a top quark pair decaying into the $t\bar{t}H\to 4\ell$ signature. The study has been performed using data with an integrated luminosity of $\mathcal{L}=20.1 fb^{-1}$ collected by the ATLAS experiment in $pp$ collisions with $\sqrt{s}=8$ TeV at the Large Hadron Collider. This production...
C. Danielle Leonard
(University of Oxford)
6/17/14, 10:15 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
At a time when understanding the accelerated expansion of the universe is one of the key questions of cosmology, we are compelled to examine the possibility of modifications to general relativity on very large scales. To do so, we consider the weak lensing power spectrum, for which deviations from the standard general relativistic form may be hallmarks of modified gravity. However, computing...
Alexandre Beaulieu
(University of Victoria)
6/17/14, 10:30 AM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The improvement of the electromagnetic calorimeter endcap is the primary hardware contribution of Canada to the Belle-II experiment. The very high luminosity and large associated backgrounds dictate technology improvements required to ensure the performance fulfills the physics needs, despite these backgrounds. Meeting those challenging requirements will be achieved by replacing the crystals...
Sjoerd Roorda
(U)
6/17/14, 10:30 AM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Non-Student) / orale (non-étudiant)
Many materials analysis techniques rely on the 'particle in - particle out' principle, where a source produces precisely controlled probe particles that interact with a sample and a detector characterizes the scattered or transmitted probe particles, providing information on the nature and structure of the sample under study. Examples of probe particles are electrons (electron microscopes),...
Prof.
Réjean Plamondon
(École Polytechnique de Montréal)
6/17/14, 10:30 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
In a recent paper [1] on the modeling of emergent patterns in complex biological and physical systems, an overview of the Bayesian approach [2] that has been used to model the space-time curvature of a static spherically symmetric massive system is presented. Among the emergent properties of such a system, stands a gravitational field that can be described by a modified Newton’s law under low...
Robert Mann
(U)
6/17/14, 10:30 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Non-Student) / orale (non-étudiant)
Wave-particle duality, superposition and entanglement are among the most counterintuitive
features of quantum theory. They clash with conventional classical wisdom and motivate
the construction of hidden-variable theories. Here I point out that realism
(defined as a property of photons being either particles or waves, but not both) is
incompatible with determinism provided superluminal...
Ms
Allison Kolly
(University of Winnipeg)
6/17/14, 10:30 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
An interesting property of anti-de Sitter space is that massless fields can travel
to infinity in a finite time, bounce back more focussed and collapse to form a black
hole. This has recently been shown to lead to the instability of AdS against the
formation of black holes. Our goal is to shed light on this by numerically examining
the effect of adding higher curvature terms to the...
Ian Affleck
(University of British Columbia)
6/17/14, 11:15 AM
Plenary Speaker / Conférencier plénier
The string theory revolution of the 1980’s led to remarkable developments in quantum field theory in one space and one time dimension.
With my collaborators we developed this theory to predict exact results on the low energy behaviour of various quantum impurity models in condensed matter physics. Some of these predictions were verified recently in experiments on gated semi-conductor quantum dots.
Mark Van Raamsdonk
(University of British Columbia)
6/17/14, 11:45 AM
Plenary Speaker / Conférencier plénier
The AdS/CFT correspondence from string theory provides a quantum theory of gravity in which spacetime and gravitational physics emerges from an ordinary non-gravitational system with many degrees of freedom. In this talk, I will explain how quantum entanglement between these degrees of freedom is crucial for the emergence of a classical spacetime, and how Einstein's equations can be derived at...
6/17/14, 11:45 AM
Plenary Speaker / Conférencier plénier
Measurements of the optical quality of the eye have increased in precision and repeatability as a result of adaptive optics techniques adapted from astronomy. We have used these techniques to identify signals to the direction of eye growth which are up regulated in the presence of myopia (short-sightednesss), induced by defocussing lenses. These and other optical changes measured in myopia...
Dr
Stéphane Bancelin
(Laboratory for Optics and Biosciences)
6/17/14, 1:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Type I collagen is a major structural protein in mammals and shows highly structured macromolecular organizations specific to each tissue. This biopolymer is synthesized by cells as triple helices, which self-assemble outside the cells into fibrils (10-300 nm) that further form fibers, lamellae or other 3D networks. This assembly mechanism depends critically on the collagen concentration, as...
Philip J. Voss
(Simon Fraser University)
6/17/14, 1:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
Philip J. Voss* on behalf of the TIGRESS Collaboration
*Department of Chemistry, Simon Fraser University, Burnaby, BC, Canada V5A 1S6
Radioactive isotopes far from the valley of beta stability exhibit a variety of interesting properties. Quantifying the evolution of nuclear structure with increasing proton-neutron asymmetry is a major focus of current experimental efforts. High precision...
Dr
Charles Varin
(Université d'Ottawa)
6/17/14, 1:45 PM
Plasma Physics / Physique des plasmas (DPP)
Invited Speaker / Conférencier invité
Subrelativistic electrons are a valuable tool for high-resolution atomic and molecular imaging. In particular, electron pulses with energies ranging from 50 to 300 keV have been successfully used in time-resolved ultrafast electron diffraction (UED) experiments to probe physical phenomena on a subpicosecond time scale. Laser-driven electron acceleration has been proposed as an alternative to...
Young-June Kim
(U)
6/17/14, 1:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Understanding magnetism in iron-based superconductors presents a difficult challenge facing researchers in this field. While a local spin model seems to describe a large subset of experimental data, these compounds are distinctly metallic and the itinerancy of electrons must be crucial for magnetism. Recent studies have suggested that both local and itinerant nature could be in play, since...
Prof.
Connie Roth
(Emory University)
6/17/14, 1:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Numerous studies have documented changes in the glass transition temperature (Tg) with decreasing thickness for thin polymer films less than ~100 nm in thickness. However, understanding of the fundamental mechanisms causing this phenomenon are still unknown. We have demonstrated that two separate mechanisms can act simultaneously to propagate enhanced mobility from the free surface deeper...
Robert Thacker
(S)
6/17/14, 1:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
While the fundamental parameters of cosmology, such as the energy density of dark energy, dark matter, and baryons are now known to considerable precision, the precise interplay between these sectors in the "late" Universe is still the subject of extensive research. Nowhere is this more intense than in the study of non-linear structures, such as galaxies, clusters of galaxies and even the...
Caio Licciardi
(Carleton University)
6/17/14, 1:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The EXO collaboration continues to search for the neutrinoless double beta decay of 136Xe. Discovery of this process would lead to a new understanding of neutrino properties and provide a first measurement of the neutrino mass scale.
The collaboration is currently operating a 200 kg liquid xenon time projection chamber, EXO-200, at WIPP in New Mexico. A detailed description of the...
Jean-Francois Arguin
(Universite de Montreal (CA))
6/17/14, 1:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
The search for Supersymmetry in LHC proton-proton collisions with the ATLAS detector will be summarized. In particular, recent searches for gluinos, squarks (including top and bottom squarks), weakly-produced superpartners, R-parity violating SUSY and long-lived signatures will be presented.
Prof.
William E. Kieser
(Physics, University of Ottawa)
6/17/14, 1:45 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Non-Student) / orale (non-étudiant)
The University of Ottawa, Canada, has installed a multi-element, 3 MV tandem AMS system as the cornerstone of the André E. Lalonde Accelerator Mass Spectrometry Laboratory, located in their new Advanced Research Complex (ARC). Manufactured by High Voltage Engineering Europa BV, the Netherlands, it is equipped with a 200 sample ion source, a high resolution, 120° injection magnet (mass-energy...
Dr
Marina Milner-Bolotin
(The University of British Columbia)
6/17/14, 1:45 PM
Women in Physics / Femmes en physique (CEWIP-CEFEP)
Invited Speaker / Conférencier invité
Last year, Let’s Talk Science released a report on the cost of high school students’ dropping science, technology, engineering and mathematics (STEM) subjects. The disengagement of Canadian students with STEM has dire economic and political consequences for the country: less than 50% of our secondary students take advanced STEM courses and even fewer decide to pursue science-heavy degrees....
Mr
Adam Sookdeo
(University of Ottawa)
6/17/14, 2:00 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Beams of PbF3- ions were produced initially using the 834 ion source at IsoTrace with targets of PbF2. Since a large count rate of common Pb could interfere with measurement of the rare 210Pb isotope we examined alternative target preparation chemistry to produce 210PbF3- beams. Beams of 150 to 175 nA of 208PbF3- were measured in targets prepared by adding the Pb to HF(aq) and equal parts of...
Robert Peters
(McMaster University)
6/17/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Liquid bridges form when a liquid is stretched between two boundaries, creating a freestanding fiber. The break-up of simple Newtonian liquid bridges has been studied both theoretically and experimentally for a wide variety of different initial conditions since Plateau and Rayleigh considered the instability of a liquid jet. Though the break-up of liquid bridges composed of linear polymer...
Mr
Aaron Chester
(Simon Fraser University Department of Chemistry)
6/17/14, 2:15 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Electromagnetic transition rate measurements serve as a fundamental probe of nuclear structure and provide a stringent test for theoretical models. Doppler shift lifetime measurements offer an opportunity to directly access information about electromagnetic transition rates and discriminate between model calculations. To take advantage of this opportunity, the TIGRESS Integrated Plunger device...
Clarence Virtue
(Laurentian University)
6/17/14, 2:15 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
SNOLAB is the facility of choice for the next generation of underground particle astrophysics experiments. The scientific programme of SNOLAB encompasses the search for neutrino-less double beta decay; low energy solar neutrino studies; the neutrino signal from the next galactic supernova; and the quest for the direct observation of dark matter. This talk leaves aside the several SNOLAB...
Mr
Chris F. Dimas
(Spectral Applied Research)
6/17/14, 2:15 PM
Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)
Oral (Non-Student) / orale (non-étudiant)
Measuring fine loss in transmission of single mode fiber when coupled with 405nm laser light requires a sensitive apparatus as closed loop feedback systems are not commercially available. A stable laser and detector system are described which measure changes in transmission to within 0.02% change per hour over a 17-hour period. This measurement apparatus has proved useful in both...
Fazel Fallah Tafti
(U)
6/17/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
We report a sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2,
similar to that discovered recently in KFe2As2.
As in KFe2As2, we observe no change in the Hall coefficient at T=0, again ruling out a Lifshitz transition across the critical pressure Pc.
We interpret the Tc reversal in the two materials as a phase transition from one pairing state to...
Prof.
Mariana Frank
(Concordia University)
6/17/14, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
I discuss the theoretical motivations for weak-scale supersymmetry, including the gauge hierarchy problem, grand unification, and WIMP dark matter, and their implications for superpartner masses. These are re-assessed against the leading constraints on supersymmetry from collider searches, the Higgs boson mass, and low-energy constraints on flavor and CP violation. I also summarize attempts to...
Prof.
Avery Broderick
(University of Waterloo, Perimeter Institute for Theoretical Physics)
6/17/14, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
The Event Horizon Telescope, a millimetre-wave Earth-sized interferometer, provides unprecedented access to the physics and astrophysics of supermassive black holes. Already observed, the black holes at the centres of the Milky Way and the giant elliptical galaxy M87 provide a glimpse into the mechanisms of accretion, relativistic jet formation, and even the nature of black holes themselves. ...
Mr
Cole MacDonald
(University of Ottawa)
6/17/14, 2:15 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
During nuclear weapons testing several caesium isotopes were released into the environment. Caesium 137 has been used in many studies. However this isotope has a relatively short half-life (30a) and it has already undergone ~50 years of decay. Caesium 135, another fissile isotope, has a much longer half-life ( about 2Ma) and could be used to replace 137Cs and the ratio between the two...
Prof.
Chijin Xiao
(University of Saskatchewan)
6/17/14, 2:30 PM
Plasma Physics / Physique des plasmas (DPP)
Oral (Non-Student) / orale (non-étudiant)
Dense Plasma Focus for Isotopes Activation, C. Xiao, R.A. Behbahani, Sean Wolfe (Plasmionique Inc.), A. Hirose, University of Saskatchewan -- A dense plasma focus (DPF) device (DPF-UofS) has been designed and is being fabricated and assembled at the University of Saskatchewan for production of short-lived radioisotopes utilizing the energetic ion beam emitted from DPF. Since the short-lived...
Dr
Mohamad Moukaddam
(TRIUMF)
6/17/14, 2:30 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
A new ancillary detector, SPICE (SPectrometer for Internal Conversion Electrons) has been constructed and tested for the first time at the
ISAC-II facility of TRIUMF. SPICE is designed to be coupled with the TIGRESS HPGe array to enable simultaneous in-beam gamma-ray and
conversion-electron spectroscopy in both stable and radioactive ion beam experiments. The TIGRESS+SPICE setup will combine...
Prof.
Fiorenzo Vetrone
(INRS-EMT, Université du Québec)
6/17/14, 2:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Near-infrared (NIR) excited nanomaterials are emerging as useful tools in diagnostic medicine and therapeutics. Excitation with NIR light mitigates some of the drawbacks associated with the use of UV as the excitation source. NIR light is silent to tissues thus minimizing autofluorescence, possesses greater tissue penetration capabilities and does not incur damage to the sample. In this regard...
Mr
Ashkan Dehghan
(McMaster University)
6/17/14, 2:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The phase behaviour of polyelectrolyte/homopolymer blends is studied using self-consistent field theory. The blends are composed of charged and neutral homopolymers plus counter ions dissociated from the polyelectrolytes. We explore the phase behaviour of the system as a function of blend composition, charge density and interaction parameter. Besides the usual macrophase separation behaviour,...
Prof.
Brigitte Vachon
(McGill University (CA))
6/17/14, 2:30 PM
Women in Physics / Femmes en physique (CEWIP-CEFEP)
Oral (Non-Student) / orale (non-étudiant)
McGill University hosted on 10-12 January 2014 a first
Canadian-version of a Conference for Undergraduate Women in Physics
(CCUWiP). This conference was modeled after the successful CUWiP conference
series centrally organized by the American Physical Society. We will
describe the goals of this kind of conference, organizational details,
and report on the event held at McGill. Thoughts...
Dr
Olivier Cyr-Choinière
(Université de Sherbrooke)
6/17/14, 2:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
In 1986, condensed-matter physics was profoundly shaken by the discovery of high-temperature superconductivity in materials known as cuprates. With a transition temperature *Tc* above liquid nitrogen temperature, these materials quickly proved to be promising for technological applications. However, the major motivation for the scientific community has been to understand the fundamental...
Mr
Sean Griffin
(McGill University)
6/17/14, 2:30 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The VERITAS experiment measures Cherenkov light from air showers to study gamma rays of energies between 50 GeV and 50 TeV. During the summer of 2012, the VERITAS Collaboration completed an upgrade of the four VERITAS telescopes. The upgrade began in 2009 with the relocation of one of the telescopes to create a more symmetrical array configuration which resulted in a substantial increase in...
Prof.
Mark Matsen
(University of Waterloo)
6/17/14, 2:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Monte Carlo field-theoretic simulations (MC-FTS) are performed on melts of symmetric diblock copolymer for polymerization indices extending down to experimentally relevant values. The simulations are performed with a fluctuating composition field and a pressure field that follows the saddle-point approximation. Our study focuses on the disordered-state structure function, S(k), and the...
Zoltan Gecse
(University of British Columbia (CA))
6/17/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
We present searches targeting electroweak production of supersymmetric particles in proton-proton collisions at the Large Hadron Collider with the Run1 data collected by the ATLAS detector.
We review the limits on the masses of these supersymmetric particles and their production cross-section in the context of simplified models and the phenomenological Minimal Supersymmetric Standard Model.
Krzysztof Starosta
(Simon Fraser University)
6/17/14, 2:45 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
The 8π spectrometer was funded in 1984 by Atomic Energy of Canada Ltd. (AECL) and Natural Sciences and Engineering Research Council of Canada (NSERC) and comprised of 20 High Purity Germanium (HPGe) detectors, their BGO Compton suppressors with phototubes, and a 72 element inner BGO ball. After its use at the TASCC facility in Chalk River, it was moved to the Lawerence Berkeley Laboratory and...
Prof.
Robert Fedosejevs
(University of Alberta)
6/17/14, 2:45 PM
Plasma Physics / Physique des plasmas (DPP)
Oral (Non-Student) / orale (non-étudiant)
Ultrashort duration Betatron X-ray Radiation results from the acceleration of relativistic electrons inside high intensity laser wakefield cavities. The femtosecond pulse duration and the synchronization properties make Betatron Radiation an ideal probe for investigating the dynamic properties of laser produced warm dense matter. Study of the ionization state of material in the non-equilibrium...
Mrs
Rumila Narraidoo Ramiah
(Research in Public Health)
6/17/14, 2:45 PM
Women in Physics / Femmes en physique (CEWIP-CEFEP)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Women in Physics
Alex Wright
(Q)
6/17/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
SNO+ is a kilotonne-scale liquid scintillator neutrino experiment that is currently being constructed at SNOLAB. One of the primary physics goals of SNO+ will be a search for neutrinoless double beta decay, which will be carried out by loading tellurium metal into the liquid scintillator. This talk will describe the techniques that have been developed to prepare tellurium for use in SNO+, most...
Mr
Patrick St-Onge
(Université Laval)
6/17/14, 3:00 PM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The multidetector HERACLES studies heavy-ion collisions at TRIUMF, with ion beams with an energy range between 8 to 15 MeV per nucleon [1,2]. Seventy-eight detectors are axially distributed around the beam axis in 6 rings allowing detection of multiple charged fragments from nuclear reactions. Experimental data was collected by HERACLES from a 20Ne and 22Ne beam at 11.7 MeV per nucleon on a...
Mr
Sayantan Auddy
(Student)
6/17/14, 3:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We develop an analytic formulation to find the internal structure of sub-stellar objects. This yields a value for a minimum stellar mass that denotes the boundary between brown dwarfs and stars. Our method employs an exact expression for the pressure of an ideal non-relativistic Fermi gas at finite temperature, meaning that the parameter $\psi$ is non zero. Our model gives a more accurate...
Charles-Andre Couture
(INRS)
6/17/14, 3:00 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Second harmonic generation (SHG) microscopy is used to image structures lacking a center of inversion (non-centrosymmetric). Some biological tissues, particularly those made of collagen, possess this property. Because SHG microscopy is a coherent technique, the structure of the studied sample influences greatly the generated signal strength. By varying the polarization of the fundamental beam,...
Nikita Bernier
(TRIUMF)
6/17/14, 3:00 PM
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
GRIFFIN (Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei) will replace the 8pi spectrometer at the TRIUMF ISAC facility by the end of 2014 with an array of 16 large-volume hyper-pure germanium (HPGe) clover detectors and instrument them with a state-of-the-art digital data acquisition system. The facility will be used to investigate a variety of aspects in nuclear structure,...
Elder Pinzon
(Y)
6/17/14, 3:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
In T2K, neutrinos are observed via charged current quasi-elastic scattering (CCQE) interactions (\nu_{\mu}+n->\nu^{-}+p), as well as charged current single pion production (CC1\pi) (\nu_{\mu}+p->\mu^{-}+p+\pi^{+}). The \pi^{+} is free to interact inside and outside the nucleus via absorption (ABS) and charge exchange (CX: \pi^{+}->\pi^{0}) processes. If there is an unobserved pion, then the...
Matthew Gignac
(University of British Columbia (CA))
6/17/14, 3:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The Standard Model (SM) of particle physics provides a theoretical framework to understand fundamental particle interactions. Despite its extraordinary success, the SM leaves a number of open questions: What is the nature of Dark Matter? Why is the SM Higgs boson so light? Supersymmetry (SUSY) is an extension of the SM of particle physics which predicts a super-partner for each of the SM...
Benjamin Hatton
(U Toronto)
6/17/14, 3:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Bacteria are highly effective at populating living or inanimate surfaces, which causes significant problems in the healthcare industry, such as nosocomial infections, and the infection of medical devices. There is much to learn on the roles of surface topology at nano and micro scales, wettability and local adhesion forces on bacterial attachment and growth. This talk will present recent...
Matthew Johnson
(Y)
6/17/14, 3:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
What did the Universe look like near the time of the Big Bang? What is the origin of structure in our Universe? Was there a time before the Big Bang? Precision cosmological measurements, such as those performed by the Planck satellite, have allowed us to confront some possible answers to these questions with data. In this talk, I will describe some of the current theories of the early...
Prof.
Can-Ming Hu
(University of Manitoba)
6/17/14, 3:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Developing new methods for generating and detecting spin currents has been the central task of spintronics. In the pioneering work of Johnson and Silsbee, the generation and detection of spin-polarized currents were both achieved through the use of ferromagnetic metals (FM). Recent breakthroughs reveal ferromagnetic insulators (FI) to be promising spin current sources, in which spin currents...
Patrizio Antici
(INRS)
6/17/14, 3:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Laser –generated particles are more and more considered to become a competitor to particle beams generated by traditional accelerator facilities such as Linac or synchrotrons. In particular, the high accelerating gradient that can be reached with laser-acceleration mechanisms, almost 1000 times stronger than for conventional accelerators, makes them an attractive alternative. A stronger...
Paul Barclay
(University of Calgary)
6/17/14, 3:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
By confining light to sub-wavelength volumes, nanophotonic devices enhance light matter interactions and enable a wide range of fundamental and applied studies. Nanophotonic optomechanics experiments probe optical coupling between nanomechanical resonators and photons. Using nanophotonic devices such as microdisk and photonic crystal nanocavities, it is possible to routinely measure thermal...
Prof.
Ernest Ma
(University of California, Riverside)
6/17/14, 3:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
Whereas great strides have been made in the experimental measurements of neutrino properties, a definitive theory of neutrinos is yet to emerge. I will discuss some selected theoretical ideas, including the possible link between neutrinos and other phenomena such as dark matter and astrophysics.
Frederick Dallaire
(Universite de Montreal (CA))
6/17/14, 3:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The search for $pp \rightarrow Vjj$ with a dijet resonance is motivated by a number of theories going beyond the Standard Model. The Higgs boson discovery by ATLAS and CMS imposes strong constraints on theories beyond the Standard Model. Minimal Walking Technicolor (MWT) proposes a dynamical approach to explain the electroweak symmetry breaking and is of interest as it includes a light...
Alex Cushley
6/17/14, 4:00 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The proposed launch of CanX-7, carrying a space-borne ADS-B receiver developed by the Royal Military College of Canada will create a unique opportunity to study the modification of the 1090 MHz radio waves following propagation through the ionosphere from the transmitting aircraft to the passive satellite receiver. Our previous work has successfully demonstrated that ADS-B data is feasible as...
Joseph Peter Kinghorn-Taenzer
(University of Toronto (CA))
6/17/14, 4:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
A search for the Higgs boson in the associated production mode WH → WWW(∗) → lνlνqq (l = e, μ) performed combining the 20.3 fb−1 of proton-proton collision data at a centre-of-mass energy of 8 TeV collected in 2012 and the 4.7 fb-1 of proton-proton collision data at a center-of-mass energy of 7 TeV collected in 2011 with the ATLAS detector. Assuming a Higgs mass of 125 GeV, a 95% CL limit of...
Erica Caden
(L)
6/17/14, 4:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
SNO+ is a scintillator experiment at SNOLAB searching for neutrino-less double-beta decay in Tellurium-130, as well as detecting low energy solar neutrinos, and reactor- and geo-antineutrinos. Good understanding of our energy response is crucial, especially in making the double beta decay measurement. SNO+ will deploy radioactive calibration sources to study the detector’s response to...
Arif Babul
6/17/14, 4:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Over the past 30 years, cosmologists have made dramatic advances in establishing the fundamental parameters that govern the large-scale evolution of cosmic space-time. This progress is largely the
result of experiments designed to measure the properties of the cosmic microwave background (CMB) to exquisite precision. CMB measurements, however, provide information about the state of the...
Aaron Arthur Liblong
(University of Toronto (CA))
6/17/14, 4:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
In the Standard Model of particle physics, there exist several modes by which a Higgs boson may be produced, and several modes by which it may decay. In order to accurately characterize it via measurement of its couplings to other particles, the statistically significant combinations of these production and decay modes must be studied. An analysis of one such combination is presented here,...
Mr
Samuel Beaulieu
(INRS-EMT)
6/17/14, 4:15 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Until very recently, Free Electron Lasers (FEL) and synchrotrons offering femtosecond (10$^{-15}$s) slicing technology have been the only facilities able to generate femtosecond X-Ray pulses in the water window (280-530 eV) spectral range. Bringing ultrafast science to the soft-X-Ray offer a wide range of application like studying multielectron dynamics in gas phase atoms/molecules,...
Prof.
Yunlong Sheng
(Université Laval)
6/17/14, 4:15 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Non-Student) / orale (non-étudiant)
For modeling optical trapping of an anisotropic nano-particle we first used the point matching
method to compute the T-matrix coefficients based on the boundary condition for the normal
componants of D-fields. In the anisotropic media, where the divergence of E-field is nonzero,
the Maxwell wave equations was sloved in the Fourier space. Thus, the plan waves with
angular spectrum amplitude...
Prof.
Richard Marchand
(University of Alberta)
6/17/14, 4:15 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Oral (Non-Student) / orale (non-étudiant)
When an object moves at supersonic speed, it creates a wake in the downstream region in the medium in which it propagates. In addition to the wake, that is, a region of depleted density, the supersonic flow also excites waves or normal modes, both downstream and upstream of the object. These modes can correspond to “surface modes” and, when the medium is a plasma, “cavity modes” can also be...
Jack Sankey
(McGill University)
6/17/14, 4:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
In the field of optomechanics we have learned to use the forces exerted by laser light to gain a new level of control over a wide variety of mechanical systems. These systems range in size from kilogram-scale mirrors in gravitational wave detectors to nanomechanical elements in cryogenic environments.
In this talk I will discuss how a very modest source of laser light (i.e. a few...
Robin Marjoribanks
(U)
6/17/14, 4:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
The more intense that laser pulses can be made, the more surprising and extreme are the interaction effects researchers are seeing -- effects that are sometimes hard to control. One way to guide or redirect the physics relationships is to manipulate the composition or shape of targets. Nickel nanowires present >95% optical absorption into an effective skin-depth that is very long, greater...
Dr
Robert Style
(Yale University)
6/17/14, 4:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Solid surface tension is typically ignored, but can be very important in soft solids. It acts to minimise surface area, and can significantly change how the solids behave. I will talk about its role in determining the mechanical properties of soft composites. We make soft composites by embedding small inclusions in soft gels - with the aim of understanding how the composite microstructure...
Pascal Grégoire
(Université de Montréal)
6/17/14, 4:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Exciton-polaritons are half-light, half-matter quasi-particles formed by excitons strongly coupled to the confined electromagnetic field of a microcavity. Their very low effective mass ($< 10^{-4} m_e$) and their bosonic character allows a phase transition to a Bose-Einstein Condensate (BEC) at relatively high temperature. Quantum effects such as spontaneous macroscopic coherence and...
Ms
Dimpal Chauhan
(Queen's University)
6/17/14, 4:30 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
SNO+ is a multipurpose neutrino physics detector, located 2 km deep underground at SNOLAB in Sudbury, Canada. The SNO+ Acrylic Vessel (AV) will be filled with 780 tons of liquid scintillator, Linear Alkyl Benzene (LAB). The AV is surrounded by about 7000 tonnes of ultrapure light water, which shields the detector from naturally occurring radioactivity in the surrounding rock, PMTs etc. To...
Mr
Marius Oltean
(McGill University)
6/17/14, 4:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We compute the evolution of cosmological perturbations in a recently proposed Weyl-symmetric theory of two scalar fields with oppositely-signed kinetic terms and conformal couplings (in lieu of minimal coupling) to Einstein gravity. At the background level, the theory admits novel geodesically-complete cyclic cosmological solutions characterized by a brief period of repulsive gravity, or...
Mr
Solomon Akaraka Owerre
(University of Montreal)
6/17/14, 4:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We study the phase transition of the escape rate of exchange-coupled dimer
of single-molecule magnets which are coupled either ferromagnetically or antiferromagnetically in a staggered magnetic field and an easy $z$-axis anisotropy. The Hamiltonian for this system has been used to study dimeric molecular nanomagnet [Mn$_4$]$_2$ which is comprised of two single molecule magnets coupled...
Duncan O'Dell
(M)
6/17/14, 5:00 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Non-Student) / orale (non-étudiant)
We consider the controlled transfer of light between the two sides of an optical cavity containing a moveable membrane in the middle. The transfer process is analogous to STIRAP in atomic/laser physics. The system also presents some fundamental issues in cavity-QED and optomechanics because of the time-dependent boundary conditions. In particular, we compare and contrast Maxwell dynamics...
Mr
Muhammad Raj Masud
(University of Alberta)
6/17/14, 5:00 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
New ceramic laser materials allow the development of scalable, high efficiency and high repetition rate direct diode pumped laser modules. We are developing a diode pumped multipass amplifier as part of a new terawatt laser system being developed at the University of Alberta. Currently measurements are being carried out of the gain and extracted energy from a Yb:YAG ceramic disk amplifier...
Mr
Michael O'Neill
(CAP - PAC)
6/17/14, 5:00 PM
Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)
Invited Speaker / Conférencier invité
Elements of Professional Practice for Physicists
Prepared by: M.K. O'Neill , M.Sc. (Physics), P.Eng, P.Phys and
Dr. Stephen Pistorius M.Sc. (Med) Ph.D. (Physics), P.Phys., FCOMP
for the CAP Professional Affairs Committee
The Canadian Association of Physicists has established a professional designation: Professional Physicist (P.Phys). Although qualifying criteria are in place...
Dr
Eduardo Martin-Martinez
(Institute for Quantum Computing and Perimeter Institute for Theoretical Physics)
6/17/14, 5:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
By applying quantum informational and optical tools to quantum gravity theories in the very early universe, we show that the fluctuations of quantum fields as seen by late comoving observers are significantly influenced by the history of the early universe, transmitting information about the nature of the universe in timescales when quantum gravitational effects where non-negligible. This...
Prof.
Sree Ram Valluri
(University of Western Ontario)
6/17/14, 5:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
There is substantial interest in enhancing the Figure of Merit of thermoelectric materials in their applications to diverse fields such as energy and environmental studies [1,2]. The relationship between thermal and electrical conductivities is often described by the empirical Wiedemann-Franz law.
Improvisations beyond this law have been found to be necessary to extend its scope to broader...
Jeffrey Rau
(University of Toronto)
6/18/14, 8:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
In this talk, I will review recent developments of strongly correlated electron systems in transition metal materials. In particular, transition metal oxides exhibit novel quantum phases including unconventional superconductivity, electronic nematic phases, topological Mott insulators, and quantum spin liquids. This rich variety of phenomena stems from the interplay among charge, spin,...
Mark Sutton
6/18/14, 8:30 AM
History of Physics / Histoire de la physique (DHP)
Invited Speaker / Conférencier invité
This talk will discuss the history of x-ray diffraction, with
an emphasis on a Canadian perspective. It will discuss important
milestones of x-ray diffraction, the history of x-ray sources
and discuss diffraction research with an emphasis on Canadian Research.
Dr
Wojtek Fedorko
(University of British Columbia)
6/18/14, 8:30 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
One of the key missions of the LHC is to search for the unknown and unexpected. The 2012 LHC run at centre of mass energy of 8 TeV has delivered a wealth of data for the ATLAS experiment to analyse. This talk will give a flavour of the variety and breath of searches for physics beyond the Standard Model at ATLAS, ranging from those using relatively clean signatures through to more complicated...
Michael Morrow
(Memorial University of Newfoundland)
6/18/14, 8:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Phospholipid bilayer interdigitation can be induced by the application of hydrostatic pressure. Bilayers of anionic lipid are known to interdigitate at lower pressures than bilayers of corresponding lipids with zwitterionic headgroups. Dispersions of lipid mixtures with long and short chains, known as bicellar mixtures, can exist as small bilayered micelle disks at temperatures below the...
Prof.
Achim Kempf
(University of Waterloo)
6/18/14, 8:30 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Quantum information theoretic tools could be used to study the most basic physical phenomena. For example, measurements of quantum entanglement allow one, in principle, to detect curvature. I am proposing that curvature may be expressible entirely in terms of entanglement. This would open up the prospect that quantum gravity could be simulated on a quantum computer. Mathematical results that...
Dr
Christopher Jackson
(Université de Montréal)
6/18/14, 8:30 AM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The Project In CAnada Searching for Supersymmetric Objects (PICASSO) at SNOlab searches for Weakly Interacting Massive Particle (WIMP) interactions with 19-F. It is particularly sensitive to spin-dependent particle interactions. It uses a droplet technique, based on the principle of a bubble chamber, in which phase transitions in superheated liquids can be triggered by WIMP induced nuclear...
Prof.
Joseph Thywissen
(University of Toronto)
6/18/14, 8:30 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
The thermodynamic properties of unitary Fermi gases are called universal, since they do not depend on the strength or physical origin of their interactions. For the same reason, one might expect dynamics to be universal. We report on the growth of interactions and the loss of magnetization in a gas initialized with full transverse magnetization. Such a gas has no interaction energy, since each...
Alain Bellerive
(Carleton University (CA))
6/18/14, 8:30 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The Standard Model is the most comprehensive present day precision theory of particle interactions. Nonetheless, many key questions in subatomic physics and cosmology remain unanswered. The recent discovery of a Higgs-like particle at the Large Hadron Collider (LHC) has raised new questions. The International electron-positron Linear Collider (ILC) is being planned as the next high-energy...
Wolfgang Rau
(for the SuperCDMS Collaboration)
6/18/14, 8:45 AM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
It is well established by now that about 80% of the mass in the Universe exists in a form other than the baryonic matter that makes up all object we know. However, we do not know yet what this "Dark Matter" consists of. The most discussed solution to this problem is a Weakly Interacting Massive Particle (WIMP). SuperCDMS is an upgrade of the Cryogenic Dark Matter Search experiment using...
Kyle Shiells
(U)
6/18/14, 9:00 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The ns → (n+1)s transition in alkali atoms is of interest due to its sensitivity to relativistic effects, and it has been the basis for the most stringent atomic parity non-conservation measurement by the Boulder group. We have carried out 5s→6s two-photon spectroscopy on rubidium kept in a vapor cell, with the aim of determining 6s hyperfine splittings and 5s→6s isotope shifts between...
Mr
William Page
(University of British Columbia)
6/18/14, 9:00 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The Super Cryogenic Dark Matter Search (SCDMS) experiment uses solid state germanium and silicon detectors to search for Weakly Interacting Massive Particles (WIMPs), a leading candidate to explain dark matter. WIMPs are thought to be streaming through the earth, and CDMS seeks to measure the energy deposited by a WIMP-nucleon collision in sensitive calorimeters. Background particles dominate...
Prof.
Keshav Dasgupta
(McGill University)
6/18/14, 9:00 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
In this talk I will argue that a de Sitter solution in string theory is hard to get, although not impossible. I'll show a possible way to realize KKLT type solution using string theory fluxes and discuss the status of other possible ways to achieve de Sitter vacua.
Karen Allahverdyan
(Laval University)
6/18/14, 9:00 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Very often the cholesteric liquid crystals are obtained by mixing a small quantity of chiral molecules in a nematic liquid crystal host. The homogeneous mixture is obtained by molecular diffusion, which takes place due to chaotic (thermal) motion of individual molecules. This process is temperature dependent. However, the breakdown of physical symmetry also affects dramatically the diffusion...
Prof.
Reiner Kruecken
(TRIUMF)
6/18/14, 9:00 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
TRIUMF, Canada’s national laboratory for Particle and Nuclear Physics, has made substantial progress towards the construction of the Advanced Rare IsotopE Laboratory (ARIEL), which is its flagship project towards advancing isotopes for science and medicine. ARIEL will ultimately triple the current rare isotope beam capability, facilitating many more experiments in material science, nuclear...
Prof.
Manu Paranjape
(Université de Montréal)
6/18/14, 9:00 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
We consider the one dimensional spin chain similar to the one studied by Haldane, however in the opposite limit, of very large anisotropy and small nearest neighbour, anti-ferromagnetic exchange coupling between the spins. The zero order theory has a ground state that is 2^N degenerate, corresponding to each spin in its highest or lowest weight state. For a periodic chain with an even number...
Keith Ng
(University of Waterloo)
6/18/14, 9:00 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
It is well-known that black holes emit Hawking radiation, which has a characteristic temperature; observers outside the black hole observe the emission of particles. We consider a conformally coupled scalar field around a black hole in an asymptotically AdS spacetime. By using a simple model of a particle detector, we can probe the spectral features of this radiation. We calculate the response...
Dean Chapman
(University of Saskatchewan)
6/18/14, 9:15 AM
History of Physics / Histoire de la physique (DHP)
Invited Speaker / Conférencier invité
The use of x-ray diffraction optics for biomedical imaging has provided a very fruitful area of instrumentation development, especially at synchrotron sources. Such optics have driven a number of biomedical imaging applications such as K-edge subtraction imaging (a form of element specific imaging), analyzer based imaging or diffraction enhanced imaging, Talbot or interferometry based imaging...
6/18/14, 9:15 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Invited Speaker / Conférencier invité
Join Dr. Marina Milner-Bolotin, to discuss how Physics Education Research and Modern Education Technologies can help you engage your undergraduate students in meaningful physics learning inside and outside of classroom.
Presentation by Nelson Education followed by product demo and light refreshments in room C-207.
Barbara Frisken
(S)
6/18/14, 9:15 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
This presentation will focus on results from recent experiments on earth and on the International Space Station investigating the interplay between phase separation and crystallization in samples prepared in the three-phase region (gas-liquid-crystal) of the phase diagram of a colloid-polymer mixture. On earth, our samples first separate into a colloid-rich phase and a colloid-poor phase, with...
Alexander Smith
(U)
6/18/14, 9:15 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The apparent triviality of the topology of our universe stands in stark contrast to the properties of general relativity, which admits all possible topologies. The topological censorship theorem resolves this conundrum insofar as it relegates all isolated topological structures (such as wormholes) inaccessible to observers by any classical experimental means.
I will show here that an...
Prof.
James Martin
(University of Waterloo)
6/18/14, 9:15 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Rydberg atoms --- large atoms with a highly excited, loosely bound electron --- may enable hybrid quantum systems, combining the long coherence times of atomic systems with the strong interactions of solid-state devices. However, this will require atoms to be located near a heterogeneous surface with exposed metal electrodes and dielectric insulators, which are sources of uncontrollable and...
Mr
Jonathan Williams
(Simon Fraser University)
6/18/14, 9:30 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Subcritical Intense Multiplier Of Neutrons (SIMON) is a proposed neutron generator facility in the Department of Chemistry at Simon Fraser University. The facility aims to support a research program including production and separation of radioisotopes for medical applications, as well as studies of nuclear structure, neutron induced fission, neutron activation for non-destructive elemental...
Denis Dalidovich
(P)
6/18/14, 9:30 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
A dimensional regularization scheme for
quantum field theories with Fermi surface is proposed
to study scaling behaviour of non-Fermi liquid states
in a controlled approximation.
Starting from a Fermi surface in two space dimensions,
the co-dimension of Fermi surface is extended to
a general value while the dimension of Fermi surface is fixed.
When Fermi surface is coupled with a...
Prof.
Viktor Zacek
(Université de Montréal)
6/18/14, 9:30 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
Astronomical observations of galaxies, clusters of galaxies and studies of the large scale structure of the Universe show convincing evidence of the existence of dark matter (DM). However our understanding of its nature and its non-gravitational properties is still lacking. We will review the basic properties of dark matter, discuss the strategies employed for its observation and give an...
Wilson Brenna
(University of Waterloo)
6/18/14, 9:30 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Building on previous numerical non-perturbative studies of the Unruh effect on a harmonic-oscillator-detector in a cavity, we seek to explain the nuances involved in taking the continuum limit of an Unruh-DeWitt detector as the cavity becomes large. While we have previously replicated the linear dependence of temperature on acceleration, here we will discuss how in the continuum limit the...
Hass Abouzeid
(University of Toronto (CA))
6/18/14, 9:30 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The search for search for a heavy Higgs boson decaying into the semi-leptonic WW final state is presented in the high mass range (300 GeV - 1000 GeV) using the ATLAS detector. These results are based on the 2012 proton-proton dataset provided by the Large Hadron Collider (LHC) corresponding to an integrated luminosity of $21\ fb^{-1}$ at center of mass energy of $\sqrt{s} = 8\ TeV$. The...
Ahmad Almudallal
(Memorial University of Newfoundland)
6/18/14, 9:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We use several computer simulation techniques to study the phase behaviour of a simple, two dimensional model that was originally devised to understand the anomalous properties of liquid water and their connection to a hypothesized liquid-liquid critical point. The interaction potential of this one-component system comprises a repulsive shoulder and an attractive square well. In our phase...
Mr
Robert Collister
(University of Manitoba / TRIUMF)
6/18/14, 9:45 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The Francium Trapping Facility at TRIUMF has successfully commissioned a capture chamber and is in the process of completing a science chamber for weak interaction studies. We present recent isotope shift measurements of the 7S1/2 to 7P1/2 (D1) transition taken in the capture chamber by radiofrequency sideband spectroscopy. While isotope shifts in heavy elements are dominated by the field...
Dr
Kenji Hamano
(University of Victoria)
6/18/14, 9:45 AM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
Many new physics models beyond the Standard Model produce same-sign
dilepton pairs. Supersymmetry, universal etra dimentions, left-right
symmetry, Higgs triplets and Little Higgs are examples of such new models.
Same-sign dilepton pairs are clean signature in the collisions of two
protons because not many Standard Model process to produce such final
states exist. This makes it an ideal...
Mr
Peter Hayman
(Carleton University)
6/18/14, 9:45 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
During the last decade, detector R&D for the future International Linear Collider (ILC) has been performed by the community. The International Large Detector (ILD) is one detector concept at the ILC where calorimetry and tracking systems are combined. The tracking system consists of a Si vertex detector and forward tracking disks, as well as a large volume Time Projection Chamber (TPC). Within...
Steve Patitsas
(U)
6/18/14, 9:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
A nonequilibrium thermodynamic theory demonstrating an induction effect of a statistical nature will be presented. We have shown that this thermodynamic induction can arise in a class of systems that have variable kinetic coefficients (VKC). In particular if a kinetic coefficient associated with a given thermodynamic variable depends on another, faster, thermodynamic variable then we have...
Richard MacKenzie
(U)
6/18/14, 9:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
We consider a field theory model in 1+1 dimensions with a discrete internal symmetry. The model is such that the true vacuum respects this symmetry but it is broken in a pair of false vacua. Solitons interpolating between the false vacua necessarily pass through the true vacuum and are unstable. Adding a second scalar field, it is possible to stabilize the soliton against small fluctuations....
Gabriela González
(Louisiana State University)
6/18/14, 10:30 AM
Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)
Plenary Speaker / Conférencier plénier
Gravitational waves are "ripples in space time'' produced by violent astrophysical events such as core-collapse supernova and collisions of neutron stars and black holes, as well as by other continuous phenomena as rotating stars and the early Universe. These waves have never been directly detected on Earth yet, but a network of LIGO and Virgo ground-based interferometric detectors is expected...
Kelly Cathcart
(M)
6/18/14, 1:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The permeabilization of the mitochondrial outer membrane is an important and irreversible step in apoptosis. The point of no return occurs when Bcl-2 family proteins interact with the membrane to form pores and release toxic molecules into the cytosol of the cell. Addition of cholesterol to mitochondrial-like membranes has been shown to inhibit the pore formation process. The fact that the...
Dr
Lucian Covaci
(University of Antwerp, Belgium)
6/18/14, 1:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Although graphene is not intrinsically superconducting, Cooper pairs from a superconducting contact can diffuse through it. The superconducting proximity effect was observed experimentally in graphene Josephson junctions with contacts made of various superconducting materials like Al, Pb, Nb and even layered materials like NbSe$_2$ [1,2]. When the energy of the electrons in the graphene layer...
Dr
Robin Kleiv
(University of the Fraser Valley)
6/18/14, 1:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
The X(3872) was discovered in 2003 by the Belle collaboration, and was subsequently confirmed by the CDF, D0, Babar and LHCb collaborations. This hadron lies within the mass range of the well-established charmonium mesons, but it is difficult to interpret as a charmonium state. In addition to the X(3872), several other hadrons have been discovered that are difficult to interpret as charmonium...
Dr
Matthew Reid
(University of Northern BC)
6/18/14, 1:45 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Applications development using terahertz technology has seen exponential growth in recent years, thanks in part to the availability of inexpensive, tabletop systems. One of the unique aspects of THz technology is that it exploits coherent detection to map the electric field directly in time, allowing researchers to probe dynamics on the picosecond time-scale, referred to as THz Time-Domain...
Gerald Oakham
(Carleton University (CA))
6/18/14, 1:45 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
The discovery of the Higgs boson has provided the missing link in understanding one of the most profound mysteries of particle physics, namely how particles acquire mass. To deepen our understanding of this newly discovered particle and to extend our searches for new physics, analysis of very large data samples will be required. To enable this program, the instantaneous luminosity of the Large...
Aksel Hallin
(University of Alberta)
6/18/14, 1:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The DEAP-3600 dark matter detector consists of 3,600kg of liquid argon in an ultra-pure acrylic cryogenic vessel and is in the final stages of construction, with commissioning beginning at SNOLAB. The experiment observes scintillation light with 255 high-efficiency room temperature PMTs. Most backgrounds are mitigated by ensuring excellent radiopurity and with a high efficiency neutron...
Dr
Kipp Cannon
(Canadian Institute for Theoretical Astrophysics)
6/18/14, 1:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
In 2015 the first Advanced LIGO gravitational-wave antennas will begin observing the sky, followed shortly by Advanced VIRGO, and in the years thereafter by KAGRA and LIGO-India. What might this international network see? To be detectable, gravitational-wave sources must radiate enormous amounts of power, and the most promising are short lived, cataclysmic, events: the collisions of neutron...
Ms
ELHAM REZASOLTANI
(Montreal University)
6/18/14, 1:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Due to the large band gap, large electron mobility and the high dielectric constant of zinc oxide (ZnO), it promises potential in organic-inorganic hybrid solar cells. However, such devices display lower efficiency compared to fully organic devices. Upon photoexcitation, excitons dissociate at the organic-inorganic interface, with the positive charge located on the organic material and the...
Michel Godin
6/18/14, 1:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
Monitoring the growth of cells is of fundamental interest in biology and biomedicine. Over the decades, various approaches have been developed to infer growth patterns, but different studies often reach irreconcilable conclusions due to a lack of resolution or to population averaging. In recent years, the integration of biosensors within microfluidic environments has yielded improved...
Po-Jui Chen
(Y)
6/18/14, 2:00 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Optimization of light extraction efficiency (LEE), is of crucial importance for applications ranging from LEDs to weakly emitting fluorescence based thin film chemical sensors. Refractive index differences result in a large proportion of the internal luminescence, whether electrically or optically generated, being trapped and subsequently reabsorbed within the device. As a result,...
Kenneth Blahut
(Ryerson University, Toronto, Canada)
6/18/14, 2:00 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
There currently exists only one mathematical model describing the course of a hepatitis C virus (HCV) infection in vitro: a non-spatial ODE model. However, experiments have shown that the spread of HCV infection has an important spatial component: infection disseminates both distally via release and diffusion of virus through the medium, and locally via direct, cell-to-cell infection. Both...
Benjamin Broerman
(Queen's University)
6/18/14, 2:00 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
DEAP-3600 is a single phase liquid argon dark matter detector. Particle interactions in liquid argon produce light at a peak wavelength of 128nm, which is below the wavelength range of efficient detection with photomultiplier tubes. To shift the light to the region of peak PMT efficiency, the inner surface of the acrylic vessel is coated with tetraphenyl butadiene, an organic wavelength...
Dr
Mohammad Ahmady
(Mount Allison University)
6/18/14, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
AdS/QCD is successful in predicting the diffractive $\rho$-meson production. It is then natural to investigate the prediction of this model for $B\to\rho$ transition form factors. This talk describes the derivation of the three form factors relevant for the semileptonic $B\to\rho\ell\nu$ decay along with the tensor form factor which enters $B\to\rho\gamma$ transition within light cone sum...
Simon Viel
(University of British Columbia (CA))
6/18/14, 2:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
One of the ATLAS experiment's upgrade to take place in 2018
consists in the construction of new muon chambers. A third of these
gaseous detectors (so-called "thin gap chambers") will be built
and tested in Canada. The performance of the first prototype chamber
was investigated in a test beam at Fermilab in May 2014.
A description of the test setup at Fermilab as well as...
Dr
Giuliani Maximiliano
(University of Guelph)
6/18/14, 2:15 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Non-Student) / orale (non-étudiant)
Cell division is a key step in the life of a bacterium. This process is carefully controlled and regulated so that the cellular machinery is equally partitioned into two daughter cells of equal size. In *E. coli*, this is accomplished, in part, by the Min protein system, in which Min proteins oscillate along the long axis of the rod-shaped cells. We have used high magnification, time-resolved...
Vincent Cardin
(Institut National de la Recherche Scientifique)
6/18/14, 2:15 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Using the 100Hz line of the ALLS laboratory (Varennes, QC) we achieved 1.8$\mu$m central wavelength two-cycle pulses with an energy per pulse of more than 4mJ. High energy amplification of a white light OPA output and propagation through a noble gas filled 2m hollow core fiber were needed to obtained this high gain in output energy compared to what was previously achieved for ultrashort...
Mr
Murray Wilson
(McMaster University)
6/18/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Materials with strong spin orbit coupling such as IrTe2 frequently exhibit interesting
magnetic and electronic properties. In particular, this material exhibits a structural
phase transition at 270 K into a charge density wave state, which is suppressed when the
parent compound is doped with metals such as Pd, Fe, Pt, Ni, Mn, Cu, or
Co. As this transition is suppressed, superconductivity...
Alan Robinson
(University of Chicago)
6/18/14, 2:15 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Bubble chambers are a compelling technology to use in the search for Weakly Interacting Massive Particle (WIMP) dark matter. They can be operated in a regime that is sensitive to the nuclear recoils produced by dark matter interactions, but insensitive to the typically-dominant background of electron recoils. Using fluorinated targets, they provide data that is complementarity to other...
Dr
Arun Ramachandran
(University of Toronto)
6/18/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
The transport of a solute carried in the suspending fluid of a particulate suspension flowing in sub-millimeter-sized conduits is an important problem that has relevance in several different fields: metabolite exchange between blood and tissues, design of dialysis machines, drilling mud selection, organic and nutrient transport in microbial suspensions in anaerobic reactors, etc. A mechanism...
Dr
Riccardo Bassiri
(E. L. Ginzton Laboratory, Stanford University)
6/18/14, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
With the second generation of gravitational wave detectors being built, many researchers within the gravitational wave community are now considering the technological advances needed to build the next generation of detectors. The advances necessary to make even more sensitive detectors cover such diverse fields as materials science, optics, seismology, metrology, and much more. This talk...
Prof.
Clifford Champness
(Electrical and Computer Engineering Dept., McGill University)
6/18/14, 2:15 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
The addition of sodium compounds in the fabrication of thin film CuInSe2-based solar cells has substantially increased their photovoltaic solar conversion efficiencies. However, how this improvement comes about, is still not completely understood. To help find the mechanism involved, experiments have been made in this laboratory to grow Bridgman bulk monocrystalline CuInSe2+x ingots, with...
Mark W.B. Wilson
(Massachusetts Institute of Technology)
6/18/14, 2:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Singlet exciton fission is the process in organic semiconductors by which one Coulombically-bound electron-hole pair (exciton) with net singlet spin evolves into a pair of spin-triplet excitons. Although the phenomenon has long been a curiosity in organic crystals[1], we recently demonstrated that singlet fission proceeds rapidly (80fs-400ps)[2-4] and efficiently (approaching quantitative...
Prof.
Frank Hegmann
(University of Alberta)
6/18/14, 2:30 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
The ability to spatially resolve ultrafast phenomena over nanometer length scales is essential for understanding nanoscale excitation dynamics in materials as well as for measuring switching speeds of nanodevices. The scanning tunneling microscope (STM) uses quantum tunneling of electrons between a scanning tip and a sample to achieve nanoscale imaging of surfaces with atomic resolution....
Ruben Sandapen
(Université de Moncton)
6/18/14, 2:30 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
We use QCD light-cone sum rules with holographic anti de Sit- ter/Chromodynamics (AdS/QCD) Distribution Amplitudes (DAs) for the K∗ meson in order to predict the full set of seven B → K∗ transition form factors for intermediate-to-high recoil of the vector meson. We use our form factors to predict the differential and total branching fraction of the rare dileptonic decay B → K∗μ+μ− which we...
Ms
Erin Shelton
(University of Guelph)
6/18/14, 2:30 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Type IV pili (T4P) are very thin (5-8 nm in diameter) protein filaments that can be extended and retracted by certain classes of Gram-negative bacteria including *P. aeruginosa* [1]. These bacteria use T4P to move across viscous interfaces, referred to twitching motility. Twitching can occur for isolated cells or in a collective manner [2]. We have developed experimental and data analysis...
Prof.
Scott Oser
(University of British Columbia)
6/18/14, 2:30 PM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
The nature of the non-baryonic dark matter that is believed to dominate the matter budget of the universe is still obscure, in spite of decades of searches using increasingly sophisticated detectors. Although it might seem that every few years will yield another order of magnitude improvement in limits on dark matter interactions with ordinary matter, to be continued ad infinitum, in fact the...
Matthias Danninger
(University of British Columbia (CA))
6/18/14, 2:30 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The Large Hadron Collider (LHC) at CERN is the world's largest particle accelerator, colliding proton beams at
unprecedented centre-of-mass energies. ATLAS is a multipurpose experiment that records the products of LHC
collisions. In order to reconstruct the trajectories of particles produced in these collisions, ATLAS is equipped with a precision tracking system, the Inner Detector (ID). The...
Mrs
Amany Raslan
(Department of Physics and Astronomy, Trent University, Peterborough Ontario, Canada, K9J 7B8)
6/18/14, 2:30 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Experiments have observed a two-dimensional electron gas at the interface of two insulating oxides: strontium titanate ($\mathrm{SrTiO_3}$) and lanthanum aluminate ($\mathrm{LaAlO_3}$).
These interfaces exhibit metallic, superconducting, and magnetic behaviours, which are strongly affected by impurities.
We introduce a simple model to study the two-dimensional conductivity at ...
Ms
Matilda Backholm
(McMaster University)
6/18/14, 2:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Undulatory motion is utilized by crawlers and swimmers, such as snakes and sperm, at length scales ranging more than seven orders of magnitude. The understanding of this highly efficient form of locomotion requires an experimental characterization of the passive material properties of the crawler, as well as of its active force output on the surrounding medium. Here we present a novel...
Laura Liao
(Ryerson University)
6/18/14, 2:45 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Defective interfering particles (DIPs) are imperfect virus which get spontaneously generated and amplified over the course of a viral infection. DIPs interfere with virus replication and suppress production of virus. Effective management of DIPs would be a boon to health technologies, such as vaccine production, where high viral yields are desirable. Furthermore, if their kinetics was...
Prof.
Scott Menary
(York University)
6/18/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The first stage of the ALPHA experiment succeeded in producing and trapping antihydrogen for long periods of time (minutes) as well as making the first (albeit low accuracy) microwave spectroscopy measurements. During the present LHC shutdown the apparatus was upgraded (so-called ALPHA-2) to allow precision spectroscopy to test CPT. We are now looking beyond that to look at another fundamental...
Miriam Deborah Joy Diamond
(University of Toronto (CA))
6/18/14, 2:45 PM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The Diamond Beam Monitor (DBM) recently installed in ATLAS is the largest diamond pixel tracking detector ever deployed in the realm of high-energy particle physics. The DBM is designed for three main purposes: making high-precision luminosity measurements that will be essential for obtaining precision cross-section results, providing spatial information about background sources to help...
Gaëtan Landry
(Dalhousie University)
6/18/14, 2:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
The original Gell-Mann–Okubo (GMO) formalism treats the light baryons as objects to be seen in light of the broken SU(3) symmetries of the three light quarks, and lead to the development of the famous Eightfold Way diagrams. In particular, each baryon mass group (N, $\Delta$, $\Sigma$, $\Sigma^*$, $\Xi$, $\Xi^*$, $\Omega$) form isospin multiplets who differ in strangeness values. With the...
Dr
Jean-Michel Nunzi
(Queen's University)
6/18/14, 2:45 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Nonlinear absorption was investigated in a poly (3-hexylthiophene) (P3HT) PCBM fullerene blend, one of the most popular organic solar cell’s materials. We observed three-photon absorption in the bulk hetero junction photodiode configuration. The output photocurrent of the photodiode was
interpreted in terms of the three-photon absorption properties of the P3HT:PCBM blend at 1550 nm. Can the...
Ismaël Duchesne
(Laval University)
6/18/14, 3:00 PM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
*Ismaël Duchesne, Tigran Galstian, Simon Rainville*
*Department of Physics, Engineering Physics and Optics and Centre of Optics, Photonics and Lasers, Laval University, Québec, Québec, Canada*
The water solubility of lyotropic liquid crystals (LC) enables a variety of applications combining the physical symmetry breakdown with the aqueous host environment. More specifically, although...
Anand Yethiraj
(Memorial University)
6/18/14, 3:00 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
External electric fields modify inter-particle colloidal interactions and the resulting ´´electrorheological´´ structures are well documented [1]. However, the dynamics of colloids in the presence of these external fields is less studied [2].
In this work, the dynamics of colloids is reported in three regimes. At high frequencies, inter-particle dipolar interactions dominate. At...
Dr
Charles Varin
(Université d'Ottawa)
6/18/14, 3:00 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Non-Student) / orale (non-étudiant)
One of the main challenges in modeling laser-driven plasma physics is to properly resolve microscopic and macroscopic phenomena at the same time. For example, to resolve the propagation of a near-infrared pulse in a solid-density plasma, it is necessary to cover about four to five orders of magnitude in space---from angstrom to micron---to resolve both the atomic collision processes and light...
Matt Dobbs
(Lawrence Berkeley National Lab. (US))
6/18/14, 3:45 PM
Plenary Speaker / Conférencier plénier
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) will produce the largest volume astronomical survey to date, potentially unlocking the mysteries the dark-energy driven expansion history of the Universe and providing a revolutionary view of the transient radio sky at unprecedented cadence. The CHIME telescope, currently being designed, commissioned and built in Penticton, BC, is...
André-Marie Tremblay
(Université de Sherbrooke)
6/18/14, 4:15 PM
Plenary Speaker / Conférencier plénier
Materials with interesting properties, like high-temperature superconductors, happen to often appear in regimes where their quantum mechanical state is far from any state that can serve as a starting point for perturbation theory. These materials have challenged, in particular, two of the best established theories of condensed matter: band theory and the BCS theory of superconductivity. In...
Marie-Lou Gendron Marsolais
(Université de Montréal)
6/18/14, 7:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
I will consider a generalization of the Abelian Higgs model in 2+1 dimensions. The model describes a scalar field interacting with a U(1) gauge field and gives rise to vortex solutions carrying magnetic flux. In 3+1 dimensions, the vortex becomes a one-dimensional topological defect which appears in condensed matter physics as a vortex line in type-II superconductors. For a strong magnetic...
Alex Cushley
6/18/14, 7:00 PM
Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The proposed launch of CanX-7, carrying a space-borne ADS-B receiver developed by the Royal Military College of Canada will create a unique opportunity to study the modification of the 1090 MHz radio waves following propagation through the ionosphere from the transmitting aircraft to the passive satellite receiver. Our previous work has successfully demonstrated that ADS-B data is feasible as...
Jory Korobanik
(Brock University)
6/18/14, 7:00 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
Geometrically frustrated magnetic materials have attracted scientific interest due to exotic low temperature states such as the spin ice compound Ho$_{2}$Ti$_{2}$O$_{7}$. In this material, spin disorder mimics the proton disorder found in water ice, which exhibits magnetic monopole-like excitations.$^{1}$ Frustration occurs when magnetic ions are arranged in geometries where exchange...
Pouya Khaghani
6/18/14, 7:00 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
SNO+ is a scintillator based neutrino experiment located 2 km deep underground at SNOLAB in Sudbury, Ontario. Looking for rare events requires very stringent background limits and one of the sources originates form 222Rn daughters implanted into the inner surface of the acrylic vessel, holding first ultra-pure water and then organic liquid scintillator - LAB (Linear Alkyl Benzene). 210Pb,...
Wyatt Kirkby
(St. Francis Xavier University)
6/18/14, 7:02 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The average-density approximation (ADA) is used to construct a nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas. This functional is then used to formulate a Thomas- Fermi von Weizsa ¨cker-like theory for the description of the ground state properties of the system. The quality of the kinetic energy functional is tested by performing a fully self-consistent...
Mr
Amirreza Moini
(University of Windsor), Mr
Michael Busuttil
(University of Windsor)
6/18/14, 7:02 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The critical nuclear charge ($Z_c$) for a three-body quantum mechanical system consisting of positive and negative charges is the minimum nuclear charge that can keep the system in a bound state. Here we present a study of the critical nuclear charge for two-electron (heliumlike) systems with infinite nuclear mass, and also a range of reduced mass ratio ($\mu/m$) up to 0.5. The results help...
Mr
Matthieu Lafrenière Poisson
(Laboratoire René J.A. Lévesque, Université de Montréal, Montréal, Québec, Canada)
6/18/14, 7:02 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
One of the most important unsolved mysteries in physics is the possible existence of dark matter, which could account for 85% of the total mass in the universe. PICO experiment intends to detect a specific type of dark matter particle, the weakly interacting massive particles (WIMPs), via scattering on 19F nuclei from C4F10 liquid in superheated droplet detectors and from C3F8 liquid in bubble...
Ms
Janet Rumleskie
(Laurentian University)
6/18/14, 7:04 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The SNO+ experiment is located 6800 feet below the surface of the earth at SNOLAB, deep within VALE's Creighton Mine. It requires such a depth in order to be shielded from the various surface backgrounds. However, emanation of radioisotopes in the U-238 and Th-232 chains from the rock surrounding the lab can lead to other unwanted backgrounds. One such isotope, Rn-222, has a halflife of around...
Mr
Chris M. Mangiardi
(Laurentian University)
6/18/14, 7:04 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
Molecular-dynamics simulations is a particle-based simulation method that is widely used in computational physics and materials science. The strong increase of available computational power makes it possible to perform materials simulations with many millions of atoms. In order to harness the full power of modern CPUs, it is necessary to make use of the available SIMD instruction sets (e.g....
Mark Ward
(Q)
6/18/14, 7:06 PM
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
DEAP-3600 is a liquid argon dark matter experiment at SNOLAB. Meeting the physics goals and background levels required for this rare event search the detector target must be cleaned both chemically and radiologically. The system for handling all argon gas must also not impart any more than 5 $\mu Bq$ Radon emanation into the target. I will present achieving our goals and the technology of the...
Antoine Dumont
(York University)
6/18/14, 7:06 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
BaTiO3 nanoparticles of a controlled size and structure are synthesised for an electroluminescent device application developed by a collaborator. This device requires BaTiO3 nanoparticles, a narrow size distribution and improved dielectric constant. An experimental study of the material’s dielectric constant reports an increase when the particle size approaches 70 nm [1]. This property will...
Ms
Katherine Légaré
(Université de Sherbrooke)
6/18/14, 7:08 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
Nearing a decade of rapid progress, research on Dirac materials and topological insulators remains exceptionally active and broad, with ongoing work ranging from exotic field theory to applied physics. At the interface between theory and experiment, there is an intense interest to understand the effect of non-electronic environments on the band topology of Dirac materials.
Recent research...
Ms
Pantea Aurang
(Department of Micro and Nanotechnology, Middle East Technical University, 06800 Ankara, Turkey and Center for Solar Energy Research and Applications, Middle East Technical University, 06800 Ankara, Turkey)
6/18/14, 7:08 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
Highly conductive and transparent silver nanowire networks have been applied as top electrode for p-Si/ZnO nanowire heterojunction photodiodes.
Faster transient response and higher responsivity than the reference sample without deposition of silver nanowires has been obtained, which is attributed to improved carrier collection and transport efficiency through the silver nanowires network....
Stephen Albert Weber
(Carleton University (CA))
6/18/14, 7:08 PM
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
One of the ATLAS experiment's upgrade to take place in 2018
consists in the construction of new muon chambers. A third of these
gaseous detectors (so-called "thin gap chambers") will be built
and tested in Canada. The performance of the first prototype chamber
built in Canada was measured in a beam test at Fermilab in May 2014.
A description of the test setup at Fermilab as well as...
domenico bongiovanni
(I)
6/18/14, 7:10 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
Curved or self-bending light has become a hot topic recently. It’s triggered by a newly self-accelerating non-diffractive beam, named Airy beam that propagates along a parabolic trajectory. This peculiar beam has led to many potential applications such as for example optical trapping and manipulation, plasma guidance, generation of light bullets, and routing of electrons and surface plasmons. ...
Mr
David Braid
(Laurentian University)
6/18/14, 7:10 PM
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
SNO+ is a multipurpose neutrino detector located at SNOLAB in Sudbury, Ontario. As the successor to the SNO experiment, SNO+ inherited the detector hardware, including about 10000 photomultiplier tubes (PMTs). Over the lifetime of SNO approximately 8% of the PMTs experienced a failure in the base electronics. Because these PMTs represent a non-trivial gain in light collection, a repair...
Mr
Toplal Pandey
(Department of Physics, Laurentian University)
6/18/14, 7:10 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
We study the exactly solvable dimerized antiferromagnetic spin-1/2 XY chain which exhibits quantum phase transitions. We analyze the phase diagram of the model and order parameters in various regions of the parametric space. We utilize the spin duality transformations and standard results of exactly solvable spin chains to analytically calculate the conventional Landau long-range order...
Mr
Broerman Benjamin
(Queen's University), Mr
Giampa Pietro
(Queen's University)
6/18/14, 7:12 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
The DEAP-3600 dark matter detector uses 255 photomultiplier tubes (PMTs)
to detect scintillation light induced in liquid argon by nuclear recoils caused by hypothetical WIMPs.
We present here two systems that are used to calibrate and monitor
the properties of the PMTs and the overall detector response.
The fi rst calibration method utilizes an LED optical flasher source, deployed directly...
Ahmad Almudallal
(Memorial University of Newfoundland)
6/18/14, 7:12 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
The dynamic response of magnetic media on long time scales is governed by the thermally activated reversal of uniformly magnetized nano-meter grains. Such processes are controlled by ‘rare events.’ Accurately modelling rare event presents a challenge as conventional micromagnetic techniques are limited to time scales on the order of micro-seconds. One approach that can be applied to simulate...
domenico bongiovanni
(I)
6/18/14, 7:12 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
Borrowing the concept from time domain, non-stationary beams can be defined as a monochromatic coherent light whose intensity shapes vary during propagation. Therefore, the concept for non-stationary signal processing can be employed in analogy to study the linear dynamics of these beams. Typical examples of non-stationary beams
are the self-accelerating beams featured by a transversely...
Mr
Arthur Plante
(Université de Montréal)
6/18/14, 7:14 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
Particle traversing superheated liquids can trigger phase transition accompanied with acoustic emission which can be capture with piezo electric sensors. Energy above threshold has to be deposited within a critical length for such process to happen for a given set of operating temperature and pressure which can be calculated with Seitz theory. Knowing those informations, particle...
Mrs
LAILA OBIED
(brock university-physics department)
6/18/14, 7:14 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The synthesis of Dilute magnetic semiconductors (DMS) has attracted great interest
because of the potential application of these materials in spintronics. DMS can be
fabricated by alloying semiconductors with magnetic transition metal elements (TM),
such as Mn. However, the concentration of TM needed to realize the ferromagnetic order
in a semiconductor is still hard to achieve because of...
Mr
Thomas McElroy
(University of Alberta)
6/18/14, 7:16 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
DEAP-3600, comprised of a 1 ton fiducial mass of ultra-pure liquid argon, is designed to achieve world-leading sensitivity for spin-independent dark matter (interactions). In addition to rejection of backgrounds through event-wise pulse shape discrimination, the detector must be constructed with materials that have low natural U and Th concentrations to realize the three years of...
Craig Bennett
(Dept. of Physics, Acadia University)
6/18/14, 7:16 PM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Poster (Non-Student) / affiche (non-étudiant)
NbSe3 undergoes two charge-density wave (CDW) transitions with incommensurate (IC) modes q1 = (0,0.241,0) (at T1=144K) and q2 = (0.5,0.260,0.5) (at T2=59K). There is sufficient experimental evidence [1,2] that the two modes appear pair-wise along one (at T1) or along two (at T2) symmetry-related pairs of trigonal prismatic (TP) columns, which form together with the third, unmodulated pair, the...
Elise Gaia Devoie
(TRIUMF (CA))
6/18/14, 7:18 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The search for hisgh-energy particles continues at CERN, in the ATLAS detector. Due to the rarity of events such as the production of the Higgs, it is necessary to increase the luminosity of the LHC. In preparation for this increase, there are several upgrades which must be made to the ATLAS detector to take advantage of the increased event rate, and not be swamped by data. One of these...
Mr
Ye Ning
(University of New Brunswick, Physics Department)
6/18/14, 7:18 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
We have performed a benchmark calculation of non-relativistic energy level of $\mbox{H}_2^+$, using Hylleraas coordinates containing three non-linear parameters so that three inter-particle radial coordinates $r_{1}$, $r_2$ and $r_{12}$ can be described independently. Rayleigh-Ritz variational principle is used to find out minimum of the expectation value of Hamiltonian of this system....
Robin Marjoribanks
(U)
6/18/14, 7:20 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
Plasma-mediated ablation by ultrafast lasers has been widely investigated for its application in material processing, bio-medical surgery and scientific research. High repetition rate burst-mode ultrafast lasers that output pulsetrains of >1MHz repetition rate have shown advantages including higher material removal rate, and extra degrees of control. Ablation by such lasers is a highly dynamic...
Mr
Wang Jui-Jen
(University of New Mexico)
6/18/14, 7:20 PM
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
The MiniCLEAN dark matter experiment will exploit a single-phase liquid-argon detector instrumented with 92 photomultiplier tubes placed in the cryogen temperature with 4-$\pi$ coverage of a 500 kg (150 kg)
target (fiducial) mass. The detector design strategy emphasizes scalability to target masses of order 10 tons or more. The detector is designed also for a liquid-neon target that allows...
Christopher Pugh
(Institute for Quantum Computing)
6/18/14, 7:22 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
Global-scale distances for Quantum Key Distribution (QKD) can be achieved by utilizing an orbiting satellite acting as an intermediate node between two or more ground stations. With QKD states encoded in photon polarization, the total number of photons collected (or equivalently, the total received optical power) is the limiting factor to the secure key generation rate. In this study we...
Mrs
Aimee K. Gunther
(University of Waterloo)
6/18/14, 7:24 PM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
In recent years, two-photon coincidence experiments have advanced both the understanding and subsequent applications of entangled photons. In particular, for femtosecond-timescale coincidence measurements, such as two-photon absorption or sum-frequency generation, special, spectrally-broadband (or temporally ultrashort) sources of entangled photons are required [1,2].
Periodically-poled...
Prof.
Ashwin Nayak
(University of Waterloo)
6/19/14, 8:45 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
We revisit fundamental properties of quantum information in light of
a notion in one-shot information theory, namely smooth max-relative
entropy. We show how these properties, in particular Strong Subadditivity
of von Neumann entropy, follow from intuitive and easy to establish
properties of the new notion.
Pierre Berini
(U)
6/19/14, 8:45 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Optical processes such as spontaneous/stimulated emission and absorption may occur with surface plasmon polaritons (SPPs) as they interact with an optical gain medium, ultimately leading to SPP amplification and oscillation (lasing) under the right circumstances. Although SPP amplifiers and lasers have been topics of investigation for about three decades, demonstrations of both have only...
Mr
Mitchell Brocklebank
(UWO)
6/19/14, 8:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
High Resolution Depth Profiling for Studying Titanium Oxidation
M. Brocklebank1, J.J. Noel2, L.V. Goncharova1
1Department of Physics and Astronomy, 2Department of Chemistry, University of Western Ontario, London, Ontario, N6A 3K7
Titanium has many important applications in both scientific research and industry.
Our aim is an understanding of the mechanism of electrochemical oxidation of...
Michel Côté
(Université de Montréal)
6/19/14, 8:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
The coupling of electrons to a bosonic field generally causes a renormalization of the energy levels. Whereas in vacuum, the electromagnetic fluctuations lead to the Lamb shift observed in the hydrogen atom levels, in condensed matter, the phonon field renormalizes the band structure, even at zero temperature. Being as large as several hundreds of meV, this renormalization is critical to the...
Prof.
Christopher Bergevin
(York University)
6/19/14, 8:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
The purpose of the ear is to convey incoming acoustic energy from the world around us into the central nervous system. This process however can introduce (appreciable) delay, given the cascade of transduction processes that occur. From sound to synapse, much of this lag can be attributed to filtering by the frequency-selective elements in the ear. That is, resonance takes time: the sharper the...
Dr
Stephen Trentalange
(University of California at Los Angeles)
6/19/14, 8:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The historical picture of proton spin which emerged from
Deep Inelastic Scattering (DIS) experiments is now being
complemented and expanded by data from RHIC. The experiments STAR, PHENIX, BRAHMS and AnDY can be provided independently with
both transversely and longitudinally polarized proton collisions, and examine such probes as jets, neutral pions, charged hadrons, and Z/Ws. By...
Dr
Eric Woolgar
(University of Alberta)
6/19/14, 8:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
APEs are Asymptotically Poincar\'e-Einstein manifolds. I will first review the zoology of APEs and their relatives, which are various classes of Conformally Compactifiable manifolds. I will show that APEs have nice properties under the Ricci flow. Namely, if a manifold is initially APE, it remains APE under the flow, and if the mass is defined then it is monotonic. The conformal anomaly, by...
laura toppozini
(McMaster University)
6/19/14, 8:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Transient nano- or mesoscopic structures in the plasma membrane, termed rafts or functional domains, are thought to be essential for many cellular processes such as signal transduction, cell adhesion, signalling, cell trafficking and lipid/protein sorting. Experimental observations of these membrane heterogeneities have proven challenging, as they are thought to be both small and short-lived....
Prof.
Matt Dobbs
(McGill U.)
6/19/14, 8:45 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
In this talk I will survey recent results in cosmology, with a focus on Canadian contributions. This will include results derived from observations of the cosmic microwave background radiation, galaxy clusters, galaxies, and 21cm diffuse emission. In many cases, the results have deep overlap with particle physics such as probes of inflation, measurements of neutrino mass, and observations of...
Ian Blokland
(University of Alberta, Augustana Campus)
6/19/14, 8:45 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
High-quality conceptual multiple choice questions are the key ingredient to the effective use of personal response systems within lectures and to many diagnostic instruments such as the Force Concept Inventory. In addition, they can easily be incorporated into examinations as a complementary way to probe topic mastery, particularly for ideas that don't lend themselves well to traditional...
Hannah Dies
(McMaster University)
6/19/14, 9:00 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The symptoms of Alzheimer’s disease do not manifest in most patients until after the age of 60, suggesting a strong link between age-related changes in the composition of brain tissue and progression of the disease. In particular, age-related changes in cholesterol and melatonin levels are currently highly discussed in the literature. We studied the interaction between two amyloid-$\beta$...
Mathieu Laurin
(Université de Montréal)
6/19/14, 9:00 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Low energetic, elastic neutron scattering is an ideal tool to characterize dark matter detectors. At University of Montreal, we use our Tandem Van de Graaff accelerator to calibrate superheated liquid detectors of the PICASSO/PICO dark matter search experiment. Mono-energetic neutrons are produced via the 51V(p,n)51Cr nuclear reaction at well-defined resonance energies in the range of 4 to 120...
Ms
Ashley Cook
(University of Toronto)
6/19/14, 9:15 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Spectacular experiments have demonstrated the controlled layer-by-layer growth of
oxide heterostructures. This leads to the exciting prospect
of tuning magnetism and topological states of correlated electrons in low dimensions. Here, we model
$\{111\}$-grown bilayers of spin-orbit coupled double perovskites such as Sr$_2$FeMoO$_6$, showing
that these buckled honeycomb materials act as...
Ms
Alina Jade Barnett
(McMaster University)
6/19/14, 9:15 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
We tackled the problem of engaging first year physics students with basic concepts by producing videos to summarize lecture content. The “McMaster Biophysics Video Lecture Series” is a series of unique, fun and short videos, which could be incorporated into a blended learning style course. This talk covers the highlights and method of production of the videos. Free, open source video software...
Dr
James E. Taylor
(University of Waterloo)
6/19/14, 9:15 AM
Particle Physics / Physique des particules (PPD)
Invited Speaker / Conférencier invité
The dark matter problem exists at the junction of three fields, observational cosmology, high-energy theory, and experimental physics. The first two motivate us to seek a new particle, in addition to those in the Standard Model; the last is our best hope for pinning down its true nature. In this talk I will review what we know about dark matter from astrophysical observations of the cosmic...
Fei-Chi Yang
(McMaster University)
6/19/14, 9:15 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Proteins, chitin and keratin form the elementary building blocks of many biomaterials. How these molecules assemble into larger, macroscopic structures with very different properties is the fundamental question we are trying to answer [1].
Squid pen is a transparent backbone inside the squid, which supports the mantle of the squid. The pens show a hierarchical, self-similar structure under...
Sjoerd Roorda
(Université de Montréal)
6/19/14, 9:15 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Hyperuniform point patterns are characterized by a local variance that grows only as the surface area (rather than the volume) as the system gets larger and therefore do not possess infinite-wavelength fluctuations [F. Torquato & F.H. Stillinger, Phys. Rev. E **68**, 041113 (2003)]. Equivalently, it can be stated that for hyperuniform materials, the structure factor tends to zero for very...
Gilad Gour
(U)
6/19/14, 9:15 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Quantum information theory can be viewed as a theory of inter-conversions among different resources. These resources can be classical or quantum, static (like entanglement) or dynamic (like a quantum channel), noisy or noiseless, and therefore give rise to a plethora of quantum information processing tasks. In this talk, I will give an overview on the structure of quantum resource theories and...
Matthew Shepherd
(Indiana University)
6/19/14, 9:15 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Invited Speaker / Conférencier invité
The BESIII Experiment is dedicated to studying electron-positron collisions in the charmonium region. In recent years, the BESIII Collaboration has used the accelerator and detector to explore the spectrum of excited charmonium states, often dubbed *XYZ* states. Large samples of data have been collected with e+e- collision energies at or near the masses of the *Y*(4260) and *Y*(4360) states....
Véronique Hussin
(U)
6/19/14, 9:15 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Squeezed coherent quantum states are defined as eigenstates of a linear combination of ladder operators associated to a given system. They depend on the coherence and squeezing parameters. We present different types of states which generalize the usual coherent states of the harmonic oscillator. We describe some of their properties linked with quasi classicality and we compute the...
Mr
Joshua Bonatt
(Queen's University)
6/19/14, 9:15 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Radon and its decay daughters are a well known source of background in direct WIMP detection experiments, as either a radon decay daughter or an alpha particle emitted from a thin inner surface layer could produce a WIMP-like signal. The acrylic vessel, which is the central part of the DEAP-3600 detector, is susceptible to surface diffusion of radon, when exposed to natural air. To remove...
Christopher DiLoreto
(University of Windsor)
6/19/14, 9:15 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Quantum control of molecular states is important in that it can be used to manipulate the behaviour of quantum systems. In particular, noble-metal nanoparticles can be used to enhance state decay rates in proximate quantum systems and modify local electromagnetic fields. This enhancement allows us to achieve a high level of control over the quantum dynamics of an atomic system. We use the...
isil ozfidan
(U)
6/19/14, 9:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Graphene quantum dots (GQDs) with engineered lateral size, shape, and edge allow for the modification of the electronic, optical and magnetic properties of graphene [1-5]. Here we present a theory of optical properties of GQDs [2-5]. Building on our previous work [1-4] we expand the single-particle wave functions in Pz carbon orbitals and compute energy spectra using the tight-binding model....
Paradorn Pasuthip
(Q)
6/19/14, 9:30 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The DEAP (Dark Matter Experiment with Argon and Pulse-shapeDiscrimination) collaboration is currently building a 3600 kg detector that is planned for completion by summer of 2014. The detector will utilize 3600 kg of argon
as target volume. Any event occuring inside the detector will be monitored by
measuring the wavelength-shifted light with 255 Hamamatsu high quantum
efficiency R5912...
Solomon Barkley
(M)
6/19/14, 9:30 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Magnetotactic bacteria synthesize magnetic crystals in specialized organelles. This causes the cells to align with external magnetic fields. The movement of magnetotactic bacteria in applied magnetic fields has been studied previously, but only in the dilute limit in which cells do not interact. At much higher concentrations, hydrodynamic interactions and collisions can significantly alter...
François Schiettekatte
(Université de Montréal)
6/19/14, 9:30 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
Current models of implantation damage annealing consider either point defect diffusion or damage complexes that anneal by processes internal to the complexes. However, neither of these models explains the broad shape or the heat release observed by nanocalorimetry. Here, we compare the heat release of 10 or 80 keV Si ions implanted at low-fluence (0.02-0.1 Si/nm2) in monocrystalline Si at 110...
Morgan E Mercredi
(University of Manitoba)
6/19/14, 9:30 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Magnetic resonance (MR) is capable of measuring diffusion coefficients of water in tissue. MR oscillating gradient spin echo (OGSE) sequences are used to make measurements at the shortest possible diffusion times so that the transition from restricted to hindered diffusion within the smallest structures can be detected. Here we simulate a cylindrical geometry using OGSE sequences and AxCaliber...
Prof.
Luca Razzari
(INRS-EMT)
6/19/14, 9:30 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Invited Speaker / Conférencier invité
Optical nanoantennas are nano-fabricated devices able to convert free-space optical radiation into localized energy. Due to this, they can be used to enhance the electromagnetic field and to localize it on a scale well beyond the diffraction limit. Nanoantennas have thus become key elements for single-molecule spectroscopy, nano-imaging and extreme nonlinear optics [1-3]. Our aim is to exploit...
Mr
Hassan Mallahzadeh
(University of Calgary)
6/19/14, 9:45 AM
Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
Communication of quantum information, like its classical counterpart, requires data synchronization. In other words, one must be able to store the information and retrieve it when needed. An optical quantum memory is an interface that stores the information encoded in a photon and recalls it on demand. A promising protocol to implement a practical optical quantum memory is the Atomic Frequency...
Charmainne Cruje
(R)
6/19/14, 9:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The development of polymer functionalized gold nanoparticles (GNPs) have promoted prospective applications in cancer diagnostics and therapeutics, such as drug delivery, photodynamic therapy and radiation therapy. The use of polyethylene glycol (PEG) functionalized GNP conjugates (PEG-GNP) have gained much attention due to promising biodistribution and stealth properties *in vivo*. Conjugates...
Tania Wood
(University of Alberta)
6/19/14, 9:45 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The IceCube neutrino observatory is the world’s largest neutrino detector. Designed to measure the highest energy neutrinos produced in astrophysical events, IceCube has recently reported the first observed flux of extragalactic very high energy neutrinos. One of the primary challenges of operating the detector is providing robust calibrations for energies ranging from ~10 GeV to a few PeV. ...
Lyudmila Goncharova
(T)
6/19/14, 9:45 AM
Surface Science / Science des surfaces (DSS)
Oral (Non-Student) / orale (non-étudiant)
Modern synthetic approaches and nanofabrication are providing us the means of creating material structures controlled at the atomic scale. Familiar examples include the formation of hetero-structures grown with atomic precision, nanoparticles with designed electronic properties, and new carbon-based devices. One of the challenges here is that electron transport properties of these diverse...
Nikolas Provatas
(McGill University)
6/19/14, 9:45 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Phase field crystal models and their recent extension to periodic order parameters will be summarized. Their application to new results in non-equilibrium kinetics and phase transformations in materials science will be reviewed. In particular, we review new results from applications of this modeling paradigm to solute trapping during rapid solidification of alloys, defect-mediated solid-state...
Chitra Rangan
(U)
6/19/14, 9:45 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Oral (Non-Student) / orale (non-étudiant)
Promotion of Experiential and Active, Research-based, Learning (PEARLS) is a new initiative at the University of Windsor spearheaded by the Teaching Leadership Chair in Science, Dr. Chitra Rangan. In this presentation, Dr. Rangan will discuss the development of a community of practice, a network of educators who are engaged in experiential, active and research-based learning pedagogies. Some...
Celina Yang
6/19/14, 9:45 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The interactions of synthetically produced gold nanoparticles (GNPs) with living organisms are getting attention in the biomedical sciences. GNPs have been extensively used due to their ability to act as both an anticancer drug carrier in chemotherapy and as a dose enhancer in radiotherapy. Most GNPs research involved GNPs in the cytoplasm of the cell. However, is predicted that therapy...
Zisis Papandreou
(University of Regina)
6/19/14, 9:45 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
The main goal of the GlueX experiment is to search for exotic hybrid mesons as evidence of gluonic excitations, in an effort to understand the phenomenon of confinement in Quantum Chromo Dynamics. The experiment will be housed in the new Hall-D facility at Jefferson Lab as part of its accelerator upgrade to 12 GeV. The key features of this compelling physics program will be presented together...
Ms
Paulina Corona Ugalde
(University of Waterloo-IQC)
6/19/14, 9:45 AM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
The recent observation of the Dynamical Casimir Effect (DCE) was possible due to the fast modulation of the boundary using circuit QED. In this work, I investigate the DCE where the boundary follows different relativistic oscillatory motions. I obtain the relation between the effective temperature of the radiation and the acceleration of the boundary, showing that it yields an effective...
Prof.
Paul Francois
(McGill University)
6/19/14, 10:00 AM
Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)
Invited Speaker / Conférencier invité
Many biological networks have to filter out useful information from a vast excess of spurious interactions. We use computational evolution to predict design features of networks processing ligand categorization. The important problem of early immune response is considered as a case-study. Rounds of evolution with different constraints uncover elaborations of the same network motif that we name...
Sarah Nowicki
(University of Alberta)
6/19/14, 10:00 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The IceCube detector is designed to detect very high energy neutrino events (100 TeV+) from astrophysical sources. A low energy array, DeepCore, was designed to extend the reach of IceCube down to ~10 GeV. At these low energies there are unique challenges in the analyses, including angular and energy reconstruction of the events. One way to improve the reconstructions is by improving the...
Glen Pridham
(U)
6/19/14, 10:00 AM
Nuclear Physics / Physique nucléaire (DNP-DPN)
Oral (Non-Student) / orale (non-étudiant)
We report the cross section, $\sigma$, parameterized differential cross section, $\frac{d\sigma}{d\Omega}$, and analyzing power, $\Sigma(\theta)$, for neutron production via the photodisintegration of the unpolarized deuteron at 18 MeV using linearly polarized photons: $^2$H($\vec{\gamma}$,n)$^1$H.
The data were taken in October 2010 using the free-electron laser at the High Intensity Gamma...
Chanpreet Amole
(Q)
6/19/14, 10:00 AM
Particle Physics / Physique des particules (PPD)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The PICO collaboration has recently commissioned a superheated liquid dark matter detector with 2 liters of perfluoropropane (C3F8) as a target material at the SNOLAB underground laboratory. Although PICO-2L is a pilot experiment for the larger mass PICO-250L detector, it provides an excellent sensitivity to low-mass (~10 GeV) WIMP due to the powerful background rejection at nuclear recoil...
6/19/14, 10:00 AM
Physics Education / Enseignement de la physique (DPE-DEP)
Peter Seidl
(LBNL)
6/19/14, 10:00 AM
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)