Conveners
Accelerator: Physics, Performance, R&D and Future Facilities: 1
- Eugene Levichev
Accelerator: Physics, Performance, R&D and Future Facilities: 2
- Jie GAO (IHEP)
- Katsunobu Oide (High Energy Accelerator Research Organization (JP))
Accelerator: Physics, Performance, R&D and Future Facilities: 3
- Katsunobu Oide (High Energy Accelerator Research Organization (JP))
Accelerator: Physics, Performance, R&D and Future Facilities: 4
- Jie GAO (IHEP)
Accelerator: Physics, Performance, R&D and Future Facilities: 5
- Lia Merminga (TRIUMF)
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Jie GAO (IHEP)8/4/16, 9:00โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationBeing the next generation of circular collider, the CEPC project will be installed in a tunnel of at least 54 km circumference. Using electron-positron collisions, the CEPC project provides high precision measurements for Higgs physics and electroweak physics. The CEPC could be upgraded to SPPC, which can explore the physics landscape at o(100) TeV proton collisions. Other collision...Go to contribution page
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Dr Anton Bogomyagkov (Budker Institute of Nuclear Physics (RU))8/4/16, 9:20โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationInvention of the crab waist collision scheme gave birth to several projects of future colliders with luminosity by one or two orders of magnitude higher than in previous particle factories. The biggest influence in luminosity gain comes from extremely small vertical beta function, which enhances nonlinear chromaticity of the interaction region lattice. Therefore, all the projects have to...Go to contribution page
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Katsunobu Oide (High Energy Accelerator Research Organization (JP))8/4/16, 9:40โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationDesign of beam optics will be presented for the FCC-ee double-ring collider. The main characteristics are 45 to 175 GeV beam energy, 100 km circumference with two IPs/ring, 30 mrad crossing angle at the IP, crab-waist scheme with local chromaticity correction system, and "tapering" of the magnets along with the local beam energy. An asymmetric layout near the interaction region suppresses the...Go to contribution page
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Roberto Kersevan (CERN)8/4/16, 10:00โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe FCC-hh is an accelerator with unique vacuum issues. Naively it could be thought of as a beefed-up LHC, but a careful scrutiny of its technical specifications immediately shows that it presents distinctive features which are nowhere to be found in the present LHC or even in its funded upgrade, HiLumi-LHC. Its peculiarity stems from the fact that FCC-hh is characterized by extremely high...Go to contribution page
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Paolo Fessia (CERN)8/4/16, 10:20โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationHigh Field Magnets is one of the priority R&D clearly identified in the Update of the European Strategy for Particle Physics, as well as the HEPAP Accelerator R&D Subpanel. CERN, together with several collaborating institutes in the Member States, is responding with a broadly structured and progressive approach to increasing field levels. The activities in the domain of high field accelerator...Go to contribution page
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Prof. Michael Syphers (Northern Illinois University)8/4/16, 10:40โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThis talk will provide an overview of the currently envisaged landscape of charge particle accelerators at the energy and intensity frontiers to explore particle physics beyond the standard model via 1-100 TeV-scale lepton and hadron colliders and multi-Megawatt proton accelerators for short- and long-baseline neutrino experiments. The particle beam physics, associated technological challenges...Go to contribution page
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Shekhar Mishra (Fermilab)8/4/16, 11:30โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationProton Improvement Plan-II (PIP-II) is the centerpiece of Fermilabโs plan for upgrading the accelerator complex to establish the leading facility in the world for particle physics research based on intense proton beams. PIP-II has been developed to provide 1.2 MW of proton beam power at the start of operations of the Long Baseline Neutrino Experiment (LBNE), while simultaneously providing a...Go to contribution page
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Tadashi Koseki (KEK)8/4/16, 11:50โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe J-PARC accelerator comprises an H- linac, a 3-GeV Rapid-Cycling Synchrotron (RCS), a 30-GeV slow cycling Main Ring synchrotron (MR). The MR has two beam extraction systems; a fast extraction for beam delivery to the neutrino beam line of the Tokai-to-Kamioka (T2K) experiment, and a slow extraction for beam delivery to particle and nuclear physics experiments in the hadron experimental...Go to contribution page
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Gianluigi Arduini (CERN)8/4/16, 12:10โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe presentation summaries the current baseline configuration of the HL-LHC and highlights the most recent changes. Following the end of the EU funded design study the HL-LHC project published the main technical choices in form a Preliminary Design report. After the publication of the PDR, the design work was further updated in form of a Technical Design Report in 2015 and, following a cost...Go to contribution page
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Mary Convery (Fermilab)8/4/16, 12:30โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationCurrent status, upgrades and outlook of the Fermilab's accelerator complex will be presented. Expectations of beam delivery for the neutrino experiments and intensity frontier research for the next decade will be discussed.Go to contribution page
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Nickolai Muchnoi8/4/16, 12:50โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationDirect measurement of energy spectrum of backscattered laser photons allows to determine the average energy of beam electrons. With HPGe detector the mean energy could be measured with relative accuracy about 30ppm in absolute scale for beam energies below 2 GeV. This report includes an overview of beam energy measurement systems for VEPP-4M, BEPC-II and VEPP-2000 colliders. Some ideas about...Go to contribution page
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Enrico Bagli (Universita di Ferrara & INFN (IT))8/4/16, 1:10โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationSimulation of orientational coherent effects via Geant4 Beam manipulation of high- and very-high-energy particle beams is a hot topic in accelerator physics. Coherent effects of ultra-relativistic particles in bent crystals allow the steering of particle trajectories thanks to the strong electrical field generated between atomic planes. Recently, a collimation experiment with bent crystals was...Go to contribution page
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Vladimir Shiltsev (Fermilab)8/4/16, 2:30โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe future of the world-wide HEP community critically depends on the feasibility of possible post-LHC colliders. The concept of the feasibility is complex and includes at least three factors: feasibility of energy, feasibility of luminosiity and feasibility of cost. The talk will give on overview of all current options for post-LHC colliders from such perspective (ILC, CLIC, Muon Collider,...Go to contribution page
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Vladimir Tishchenko (BNL)8/4/16, 2:50โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe muon storage ring for the g-2 experiment at Fermilab poses optimization challenges that couple directly to the statistical and systematic uncertainties of the measurement. The statistical uncertainty in the Muon g-2 Experiment at Fermilab is coupled to the number of measured positrons emitted by muons stored in a weak-focusing magnetic storage ring. The frequency that the ring is filled...Go to contribution page
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Auralee Edelen (Colorado State University)8/4/16, 3:10โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationParticle accelerators are host to myriad nonlinear and complex physical phenomena, involve a multitude of interacting systems, are subject to tight performance demands, and should be able to run for extended periods of time with minimal interruption. Machine learning and artificial intelligence constitute a versatile set of techniques that are particularly well-suited to modeling, control, and...Go to contribution page
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Sergey Belomestnykh (Fermilab)8/4/16, 3:30โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationSuperconducting magnets and radio frequency cavities are cornerstone technologies for future high energy particle accelerators. In this talk I will briefly discuss state of the art of these two technologies, outline how they enable future generation of accelerators for particle physics and discuss challenges.Go to contribution page
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Dmitry Shwartz (BINP)8/4/16, 3:50โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationVEPP-2000 is electron-positron collider exploiting the novel concept of round colliding beams. After three seasons of data taking in the whole energy range of 160-1000 MeV per beam it was stopped in 2013 for injection chain upgrade. The linking to the new BINP source of intensive beams together with booster synchrotron modernization provides the drastic luminosity gain at top energy of VEPP-2000.Go to contribution page
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Prof. QING QIN (IHEP)8/4/16, 4:10โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe Beijing Electron Positron Collider (BEPC) was upgraded as a double-ring factory-like charm-tau collider (BEPCII) with the design luminosity of 1*10^{33}cm^{-2}s^{-1} at 1.89 GeV. Being finished construction and passed the national test and check in 2009, the BEPCII has been operated for high energy physics studies for more than 6 years. The luminosity at the design energy has been steadily...Go to contribution page
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Steven Boyd (University of Warwick)8/5/16, 9:00โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationMuon beams of low emittance provide the basis for the intense, well characterised neutrino beams of the Neutrino Factory and for lepton-antilepton collisions at energies of up to several TeV at the Muon Collider. The international Muon Ionization Cooling Experiment (MICE) will demonstrate ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the...Go to contribution page
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Mario Antonelli (Istituto Nazionale Fisica Nucleare Frascati (IT))8/5/16, 9:20โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationMuon beams are customarily obtained via K/ฯ decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electronโpositron collisions at centre-of-mass energy just above the ฮผ+ฮผ- production threshold with maximal beam energy asymmetry, corresponding to a positron beam of about 45 GeV interacting on electrons on target. ...Go to contribution page
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Alexey Kochemirovskiy (The University of Chicago)8/5/16, 9:40โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationRF cavities are essential components of almost every particle accelerator. Among other limitations, cavity gradients are restricted by occasional sparking inside the cavity, or RF breakdown. It has been shown that presence of external static magnetic field aggravates the influence of breakdown on performance of the cavity. This problem can arise in designs of muon ionization cooling channel,...Go to contribution page
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Maxim Bryzgunov (Budker INP)8/5/16, 10:00โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationResults of calculations of high voltage electron cooling process in NICA collider are presented. Two independent electron cooling systems in the collider are intended to increase luminosity in space charge dominated regime. The model of cooling calculations was tested on experimental results, obtained in COSY synchrotron, which is equipped with 2 MeV electron cooler, produced by Budker INP....Go to contribution page
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Max Klein (University of Liverpool (GB))8/5/16, 10:20โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe design and recent developments are presented for a Large Hadron Electron Collider (LHeC) combining the HL-LHC hadron (p,A) beams with a new electron beam of about 60 GeV energy achieved in a racetrack energy recovery linac configuration. This electron accelerator is also considered as a default for the electron-hadron configuration of the FCC currently under study. The talk will focus on...Go to contribution page
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Dr Chandrashekhara Bhat (Fermilab)8/5/16, 10:40โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationFermilab is committed to making a substantial increase in the average beam power delivered to the neutrino and muon programs via upgrades to the accelerator complex. Many of the upgrades to the existing injector accelerators are being carried out under the Proton Improvement Plan (PIP). Proton Improvement Plan โII proposes to build an 800 MeV superconducting LINAC, adding to the existing...Go to contribution page
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Jim Brau (University of Oregon (US))8/6/16, 11:15โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationILC Parameters Joint Working Group The ILC Technical Design Report documents the design of a 500 GeV linear collider, but does not specify the centre-of-mass energy steps of operation for the collider. The ILC Parameters Joint Working Group has studied possible running scenarios and the evolution of physics outcomes based on a realistic estimate of the real time accumulation of integrated...Go to contribution page
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Philip Burrows (Oxford University), Steffen Doebert (CERN)8/6/16, 11:30โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe Compact Linear Collider (CLIC) project is exploring the possibility of constructing a multi-TeV linear electron-positron collider for high-energy frontier physics studies beyond the LHC era. The CLIC concept is based on high-gradient normal-conducting accelerating structures. The RF power for the acceleration of the colliding beams is produced by a two-beam acceleration scheme, where power...Go to contribution page
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Philip Burrows (Oxford University)8/6/16, 11:45โฏAMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationUltra-low latency beam-based digital feedbacks have been developed by the Feedback On Nanosecond Timescales (FONT) Group and tested at the Accelerator Test Facility (ATF2) at KEK in a programme aimed at beam stabilisation at the nanometre level at the ATF2 final focus. This is aimed at beam stabilisation for future electron-positron linear colliders, as well as in electron linacs for FEL light...Go to contribution page
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Yasuchika Yamamoto (KEK)8/6/16, 12:00โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationThe high power test for STF-2 cryomodule with twelve cavities has completed successfully in 2015. It became clear the average accelerating gradient was 30.3 MV/m, eight cavities achieved above 31.5 MV/m as the ILC specification, and three cavities had the significant performance degradation by heavy field emission due to the additional clean room work in the STF tunnel. As the following next...Go to contribution page
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Prof. Akira Yamamoto (KEK, CERN, and LCC)8/6/16, 12:15โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationProgress in the ILC accelerator design and technical R&Ds is overviewed, and technical prospect for the project realization is discussed. Two key technologies of "nano-beam" and "superconducting RF" have been much progressed and demonstrated, at the KEK Accelerator Test Facility and at the European Free-electron Laser (XFEL) projected, respectively. Based on these technical achievements, the...Go to contribution page
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James Rosenzweig (UCLA)8/6/16, 12:30โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationRecent studies of the performance of radio-frequency (RF) copper structures operated at cryogenic temperatures have shown a dramatic increase in the maximum surface electric field that may be reached. We propose to utilize this development to enable a new generation of photoinjectors operated at cryogenic temperatures that may attain, through enhancement of the launch field at the...Go to contribution page
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Laura Bandiera (Universita di Ferrara & INFN (IT))8/6/16, 12:45โฏPMAccelerator: Physics, Performance, R&D and Future Accelerator FacilitiesOral PresentationChanneling and coherent interaction of charged particles in crystals are known since the 60s and used as a tool for material analysis by low-energy ion channeling and for the generation of linearly polarized ฮณ-beams through coherent bremsstrahlung at electron accelerators, such as the MAinzer MIcrotron (MAMI) in Germany and the Jefferson Lab in USA. If the crystal is bent, channeled...Go to contribution page