Lu Lu
(Chiba University)
30/07/2015, 15:30
NU-IN
Poster contribution
The next upgrade of IceCube Neutrino observatory (IceCube-Gen2) enhances the detection capability of neutrinos with a few hundred TeV energies or greater by the increased instrumented volume in the glacier ice. Enhancement of the optical sensor performance in detecting ultra-violet photons can be a key factor for IceCube-Gen2 to achieve a higher sensitivity as more Cherenkov lights are...
Mathieu Boudaud
(LAPTh Annecy France)
30/07/2015, 15:30
DM-TH
Poster contribution
Antiprotons are regarded as a powerful probe for Dark Matter (DM) indirect detection and indeed current data from PAMELA have been shown to lead to stringent constraints. However, in order to exploit their constraining/discovery power properly and especially in anticipation of the exquisite accuracy of upcoming data from AMS, great attention must be put into effects (linked to their...
Chi WANG
(USTC)
30/07/2015, 15:30
DM-IN
Poster contribution
A method is proposed for electron/hadron discrimination for 3D imaging BGO calorimeter DAMPE (DArk Matter Particle Explorer) experiment. The technique uses isolated bars which are extracted by comparing to their nearby bars in the same layer. We find that the energy distribution and location of isolated bars are highly sensitive to the type of interaction of incident particle. Based on the...
Kai Krings
(Technische Universität München, Physik-Department)
30/07/2015, 15:30
NU-IN
Poster contribution
A next generation of IceCube is under design targeting the Precision IceCube Next Generation Upgrade (PINGU) for the neutrino mass ordering and an extended array for astrophysical neutrino sources. A new level of precision is needed in order guarantee improved performances respect IceCube. A better calibration system will enable a better understanding of the ice and will therefore...
Piera Sapienza
(INFN)
30/07/2015, 15:30
NU-IN
Poster contribution
KM3NeT is the next generation neutrino telescope in the Mediterranean Sea employing the technique of Cherenkov photon detection. The Acoustic Positioning System (APS) is a mandatory sub-system of KM3NeT that must provide the position of the telescope’s mechanical structures, in a geo-referenced coordinate system. The APS is important for a safe and accurate deployment of the mechanical...
Richard Bartels
(University of Amsterdam)
30/07/2015, 15:30
DM-TH
Poster contribution
In the paradigm of ΛCDM, structures form hierarchically, implying that large structures contain smaller substructures. These so-called subhalos can enhance the dark matter annihilation signal that one expects to see from a given host halo, the effect of which is called the boost factor. In the literature this boost factor is typically calculated assuming a density profile for the substructure,...
Alexandre Creusot
(Universite de Paris VII (FR))
30/07/2015, 15:30
NU-IN
Poster contribution
KM3NeT is the next generation neutrino telescope being installed in the Mediterranean Sea. The first detection unit of the telescope is ready for installation in the deep Mediterranean Sea in the summer of 2015. Eighteen digital optical modules have been mounted on a vertical string for the detection of the Cherenkov light emitted by muons induced by up-going neutrinos. This paper reports on...
German Gomez-Vargas
(Pontifical Catholic University of Chile)
30/07/2015, 15:30
DM-TH
Poster contribution
The positron fraction measured by the space-based detectors PAMELA, {\it Fermi}-LAT and AMS-02 presents anomalous behaviour as energy increase. In particular AMS-02 observations provide compelling evidence for a new source of positrons and electrons. Its origin is unknown, it can be non-exotic (e.g. pulsars), be dark matter (DM) or maybe a mixture. We test the gravitino of bilinear R-parity...
Dr
Ernst-Jan Buis
(TNO)
30/07/2015, 15:30
NU-IN
Poster contribution
Acoustic detection may provide way to observe ultra-high energy cosmic neutrinos, i.e.
energies above 10^18 eV, and their extra-galactic sources [1, 2]. The expected flux of
cosmic neutrinos with ultra-high energy is low, so that large scale neutrino telescopes
are needed for this emerging field of astroparticle physics. Using the acoustic signals
induced by a neutrino interaction in water...
Jianing Dong
(USTC)
30/07/2015, 15:30
DM-IN
Poster contribution
An automatic system has been developed for the batch test of the photomultiplier tubes (PMTs) in the BGO electromagnetic calorimeter (ECAL) of Dark Matter Particle Explorer (DAMPE). There are 616 PMTs (Hamamatsu R5610A-01) used in the BGO ECAL, which are critical for the realization of high dynamic readout and high precision measurement of the scintillation light from BGO crystals. In order to...
Asato Orii
(University of Tokyo)
30/07/2015, 15:30
NU-IN
Poster contribution
Super-Kamiokande (SK) is a 50-kiloton water Cherenkov detector. It is one of the most sensitive neutrino detectors and can be used for supernova observations by detecting supernova burst neutrinos.
Recently, it is reported that Betelgeuse (640ly) is shrinking 15% in 15 years (C. H. Townes et al., 2009). Although this report does not immediately imply the supernova explosion of Beteleuse, it...
Keiichi Mase
(Chiba University)
30/07/2015, 15:30
NU-IN
Poster contribution
The Askaryan effect is the coherent radio emission of an electron excess in a particle cascade.
ARA (Askaryan Radio Array) is being built to observe the Askaryan radiation
from ultra high energy neutrino (E > 10PeV) induced showers in ice around the South Pole.
In order to study further the characteristics of the coherent emission,
and also validate ARA detection system response, we set up...
zhang fei
(IHEP)
30/07/2015, 15:30
DM-IN
Poster contribution
The Silicon Tungsten Tracker (STK) is a detector of the DAMPE satellite to measure the incidence direction of high energy cosmic ray. It consists of 6 layers of silicon micro-strip detectors interleaved with Tungsten converter plates. The entire STK contains 73,728 readout channels totally and can be read out according to external average 50 Hz trig. It’s a great challenge for space mission...
Vincent Baas
(TNO)
30/07/2015, 15:30
NU-IN
Poster contribution
The detection of ultra-high energy neutrinos with energies above 10^18 eV requires a neutrino telescope that is at least an order of magnitude larger than what has been achieved today [1]. A potential technology for a large scale neutrino telescope, which is sensitive enough to detect the low thermo-acoustic signals induced by the cosmic rays in water, is offered by fiber optical hydrophones...
Michael DuVernois
(University of Wisconsin)
30/07/2015, 15:30
NU-IN
Poster contribution
With recent exciting observations of astrophysical TeV- to PeV-energy neutrinos and new competitive measurements of GeV-energy atmospheric neutrino oscillations in the IceCube neutrino observatory at the South Pole, the design of a second generation Antarctic neutrino observatory, IceCube-Gen2, is underway. The design calls for two new instrumented volumes, one a denser in-fill array to extend...
Dr
Julie Saikia
(Pub Kamrup College)
30/07/2015, 15:30
DM-TH
Poster contribution
Thermodynamic study is the common approach to understand dark energy (DE) and dark matter (DM) riddle. The respective approach is still not comparatively matured in loop quantum cosmology (LQC). Our present work follows the study of the status of generalized second law (GSL) in unified DE-DM dominated LQC scenario.
Victor Martin-Lozano
(IFT-UAM/CSIC)
30/07/2015, 15:30
DM-TH
Poster contribution
In this work we study the phenomenological aspects of Stückelberg portals where the mediator between the Standard Model and the dark matter (DM) is a massive Z' boson. Those scenarios are well motivated by certain string theory constructions and naturally lead to i sospin violating interactions of DM particles with nuclei. We show that within this construction the relations between the DM...
Matteo Sanguineti
(INFN Genova - Università di Genova)
30/07/2015, 15:30
NU-IN
Poster contribution
The ANTARES detector is the largest neutrino telescope currently in operation in the North Hemisphere.
One of the main goals of the ANTARES telescope is the search for point-like neutrino sources. For this reason both the pointing accuracy and the angular resolution of the detector are important and a reliable way to evaluate these performances is needed.
One possibility to measure the...
Lew Classen
(University Erlangen-Nuremberg)
30/07/2015, 15:30
NU-IN
Poster contribution
Following the first observation of astrophysical high-energy neutrinos by IceCube, planning for a next-generation neutrino detector at the South Pole is under way, which will expand IceCube's sensitivity both towards high and low neutrino energies. In parallel to upgrading the proven IceCube design, new optical sensor concepts are explored which have the potential to further significantly...
Dr
Deliang Zhang
(University of Science and Technology of China)
30/07/2015, 15:30
DM-IN
Poster contribution
The DAMPE (DArk Matter Particle Explorer) is a scientific satellite mainly aimed at indirectly searching for dark matter in space. One critical sub-detector of the DAMPE payload is an electromagnetic calorimeter, which consists of 308 BGO (Bismuth Germanate Oxid) crystal bars and 616 PMTs (photomultiplier tubes), for precisely measuring the energy of cosmic rays from 5 GeV to 10 TeV. The...
Alexandre Creusot
(Universite de Paris VII (FR))
30/07/2015, 15:30
NU-IN
Poster contribution
The KM3NeT collaboration aims to build a km3-scale neutrino telescope in the Mediterranean Sea. The first phase of construction comprises the deep-sea and onshore infrastructures at the KM3NeT-It (100 km offshore Capo Passero, Italy) and KM3NeT-Fr (40 km offshore Toulon, France) sites and the installation of 31+7 detection units. For the next step (KM3NeT 2.0) completion of two detectors are...
Carsten Rott
(Sungkyunkwan University),
Debanjan Bose
(Sungkyunkwan University)
30/07/2015, 15:30
NU-IN
Poster contribution
IceCube is the world’s largest neutrino telescope located at the geographic South Pole, that utilizes more than 5000 optical sensors to observe Cherenkov light from neutrino interactions. A hot water drill was used to melt holes in the ultra-pure Antarctic ice, in which strings of optical sensors were deployed at a depth of 1500m to 2500m. The recent observation of high energy neutrinos...
Dustin Hebecker
(Humboldt Universität zu Berlin / DESY)
30/07/2015, 15:30
NU-IN
Poster contribution
We report on the development of a photon sensor sensitive to single photons that employs wavelength-shifting and light-guiding techniques to maximize the collection area and to minimize the dark noise rate. The sensor is tailored towards applications in ice-Cherenkov neutrino detectors using inert and cold, low-radioactivity and UV transparent ice as a detection medium, such as IceCube-Gen2 or...
Saptashwa Bhattacharyya
(Waseda University)
30/07/2015, 15:30
DM-TH
Poster contribution
Future space based experiments such as CALET and DAMPE will measure the electron and positron cosmic-ray spectrum with better energy resolution and up to higher energy, making detection of small features in the spectrum, which might originate from Dark Matter annihilation or decay in the galactic halo, possible. For precise prediction of these features, the numerical cosmic ray propagation...
Roberta Sparvoli
30/07/2015, 15:30
DM-IN
Poster contribution
The CALorimetric Electron Telescope (CALET) is a Japanese led international space mission by JAXA (Japanese AeroSpace Agency) in collaboration with the Italian Space Agency (ASI) and NASA. The instrument will be launched to the International Space Station in 2015. The major scientific goals for CALET are to measure the flux of cosmic-ray electrons (including positrons) from 1 GeV to 20 TeV,...
Stephanie Wissel
(UCLA)
30/07/2015, 15:30
NU-IN
Poster contribution
The PeV neutrinos discovered by IceCube are of astrophysical origin, and their progenitors could be any of several source classes, including active galactic nuclei, gamma-ray bursts, or pulsars. Such high-energy accelerators would produce neutrinos up to hundreds of PeV, which motivates the development of neutrino telescopes with the sensitivity, energy resolution, and pointing resolution...
Dr
Andrii Tykhonov
(Universite de Geneve (CH))
30/07/2015, 15:30
DM-IN
Poster contribution
An overview is given for the offline software framework and reconstruction software of the DAMPE (DArk Matter Particle Explorer) gamma-ray telescope. DAMPE is one of the five satellite missions in the framework of the Strategic Pioneer Research Program in Space Science of the Chinese Academy of Sciences, with a launch date scheduled for the fall 2015. The telescope consists of silicon-tungsten...
Wenxi Peng
(IHEP)
30/07/2015, 15:30
DM-IN
Poster contribution
Silicon Tungsten Tracker (STK) is one of the key payloads of Dark Matter Particle Explorer (DAMPE), which is planned to be launched at the end of 2015. In order to verify the design of STK, an Engineering Qualification Model (EQM) of STK was developed in 2014 and qualified for several space environmental tests, including vibration test, shock test, thermal vacuum test, thermal balance test and...
Michael DuVernois
(University of Wisconsin)
30/07/2015, 15:30
NU-IN
Poster contribution
The Askaryan Radio Array (ARA) is an ultra-high energy >100 PeV cosmic neutrino detector which is in phased construction near the South Pole. ARA searches for radio Cherenkov-like emission from particle cascades induced by neutrino interactions in the ice using radio frequency antennas (~150-800MHz) deployed at a design depth of 200m in the Antarctic ice. A prototype ARA Testbed station was...
Veronique Van Elewyck
(Universite Paris Diderot)
30/07/2015, 15:30
NU-IN
Poster contribution
KM3NeT is a network of deep-sea neutrino telescopes to be deployed in the Mediterranean Sea, that will perform neutrino astronomy and oscillation studies. It consists of three-dimensional arrays of thousands of optical modules that detect the Cherenkov light induced by charged particles resulting from the interaction of a neutrino with the surrounding medium.
The performance of the...
Paolo Piattelli
(INFN)
30/07/2015, 15:30
NU-IN
Poster contribution
Since the early days of experimental particles physics photomultipliers have played an important role in detector design. Also in astroparticle physics research, photomultipliers are largely used, in particular in experiments employing the technique of the detection of Cherenkov photons. Currently, the KM3NeT Collaboration is building a water Cherenkov neutrino telescope in the Mediterranean...
Paolo Piattelli
(INFN)
30/07/2015, 15:30
NU-IN
Poster contribution
The KM3NeT neutrino telescope is part of a deep-sea research infrastructure being constructed in the Mediterranean Sea. The basic element of the detector is the Detection Unit, a 700 meter long vertical structure hosting 18 Digital Optical Modules (DOMs). The DOM comprises 31 3'' photomultiplier tubes (PMTs), various instruments to monitor environmental parameters, and the electronic boards...
Mr
Satoshi Tsuchida
(Ritsumeikan University)
30/07/2015, 15:30
DM-TH
Poster contribution
The Kaluza-Klein (KK) particles, which are the feasible candidate for the dark matter, produce electrons and positrons when they annihilate in the Galactic halo. When the electrons and positrons propagate in the Universe, their direction is randomaized by the Galactic magnetic field, and energy is reduced by some energy loss mechanisms. We calculate the electron and positron spectrum expected...
Dr
Daan van Eijk
(Nikhef),
R Bruijn
(Nikhef)
30/07/2015, 15:30
NU-IN
Poster contribution
The KM3NeT collaboration is currently constructing the first phase of a
cubic kilometer-scale neutrino detector in the Mediterranean Sea. The basic detection
element, the Digital Optical Module (DOM), houses 31 three-inch PMT’s inside
a 17 inch glass sphere. This multi-PMT concept yields a factor three increase in
photocathode area, compared to a design with a single 10 inch PMT,...
Prof.
Paul Kooijman
(University of Amsterdam)
30/07/2015, 15:30
NU-IN
Poster contribution
In this paper we provide a detailed description of the mechanical structure of the 750 m high KM3NeT detection unit. The choices made for the different materials and their behaviour under the loads expected during deployment an during the lifetime of the experiment will be discussed, as will the motion of the unit under influence of the sea currents. The unique method of deployment, which...
Mr
Satoshi Tsuchida
(Ritsumeikan University)
30/07/2015, 15:30
DM-TH
Poster contribution
The lightest Kaluza-Klein particle (LKP), which appears in the theory of universal extra dimensions, is one of the good candidates for cold dark matter. We assume the LKP mass ranges from 500 GeV to 1000 GeV. We focus on the LKP annihilation modes which contain gamma-rays as final products. The gamma-ray spectrum from LKP annihilation has a characteristic peak structure near the LKP mass...
Bair Shaybonov
(JINR)
30/07/2015, 15:30
NU-IN
Poster contribution
The BAIKAL-GVD neutrino telescope in Lake Baikal is intended for studying astrophysical neutrino fluxes by recording the Cherenkov radiation of the secondary muons and showers generated in neutrino interactions. The first stage of BAIKAL-GVD will be equipped with about 2400 optical modules. Each of these optical modules consists of a large area photomultiplier R7081-100 made by Hamamatsu...
Bair Shaybonov
(JINR)
30/07/2015, 15:30
NU-IN
Poster contribution
The first stage of the Baikal-GVD neutrino telescope will be composed of more than two thousand light sensors, Optical Modules (OMs), installed deep underwater in Lake Baikal. We describe developed calibration methods which use OM LEDs, the calibration laser source, atmospheric muons etc. and discuss the performance of these methods.
Dr
Mieke Bouwhuis
(NIKHEF)
30/07/2015, 15:30
NU-IN
Poster contribution
The KM3NeT neutrino telescope is a next generation Cherenkov array containing thousands of optical modules being installed in deep sea at a depth larger than 2500 m and more than 40 km distance from the shore. For the precise event reconstruction sub-nanosecond precision synchronization between modules is required. Its realization exploits the White Rabbit system to synchronize clocks between...
