Paper |
Title |
Page |
MOPPC032 |
Injection and Broadband Matching for the PRISM Muon FFAG |
202 |
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- J. Pasternak, R. Chudzinski, A. Kurup
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
- J. Pasternak
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- A. Sato
Osaka University, Osaka, Japan
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The next generation of lepton flavor violation experiments requires high intensity and high quality muon beams. Such conditions can be met using phase rotation of short muon pulses in an FFAG ring, as was proposed for the PRISM project. The very large initial momentum spread and transverse emittance of the muon beam poses a significant challenge for the injection system into the PRISM FFAG. Also, the matching optics between the solenoidal transfer channel and the ring needs to create a specific orbit excursion in the horizontal plane, suppress any vertical dispersion and produce good betatron conditions in both planes. Candidate geometries for the matching and injection systems are presented and their performances are tested in tracking studies.
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MOEPPB003 |
Status of the PRISM FFAG Design for the Next Generation Muon-to-Electron Conversion Experiment |
79 |
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- J. Pasternak, A. Alekou, M. Aslaninejad, R. Chudzinski, L.J. Jenner, A. Kurup, Y. Shi, Y. Uchida
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
- R. Appleby, H.L. Owen
UMAN, Manchester, United Kingdom
- R.J. Barlow
University of Huddersfield, Huddersfield, United Kingdom
- K.M. Hock, B.D. Muratori
Cockcroft Institute, Warrington, Cheshire, United Kingdom
- D.J. Kelliher, S. Machida, C.R. Prior
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
- Y. Kuno, A. Sato
Osaka University, Osaka, Japan
- J.-B. Lagrange, Y. Mori
Kyoto University, Research Reactor Institute, Osaka, Japan
- M. Lancaster
UCL, London, United Kingdom
- C. Ohmori
KEK, Tokai, Ibaraki, Japan
- T. Planche
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
- S.L. Smith
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- H. Witte
BNL, Upton, Long Island, New York, USA
- T. Yokoi
JAI, Oxford, United Kingdom
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The PRISM Task Force continues to study high intensity and high quality muon beams needed for next generation lepton flavor violation experiments. In the PRISM case such beams have been proposed to be produced by sending a short proton pulse to a pion production target, capturing the pions and performing RF phase rotation on the resulting muon beam in an FFAG ring. This paper summarizes the current status of the PRISM design obtained by the Task Force. In particular various designs for the PRISM FFAG ring are discussed and their performance compared to the baseline one, the injection/extraction systems and matching to the solenoid channels upstream and downstream of the FFAG ring are presented. The feasibility of the construction of the PRISM system is discussed.
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THPPD024 |
Irradiation Effects in Superconducting Magnet Materials at Low Temperature |
3551 |
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- M.Y. Yoshida, M.I. Iio, S. Mihara, T. Nakamoto, H. Nishiguchi, T. Ogitsu, M. Sugano, K. Yoshimura
KEK, Ibaraki, Japan
- M. Aoki, T. Itahashi, Y. Kuno, A. Sato
Osaka University, Osaka, Japan
- Y. Kuriyama, Y. Mori, B. Qin, K. Sato, Q. Xu, T. Yoshiie
Kyoto University, Research Reactor Institute, Osaka, Japan
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Superconducting magnets for high intensity accelerators and particle sources are exposed to severe radiation from beam collisions and other beam losses. Neutron fluence on the superconducting magnets for the next generation projects of high energy particle physics, such as LHC upgrades and the COMET experiment at J-PARC, is expected to exceed 1021 n/m2, which is close to the requirements on the fusion reactor magnets. Irradiation effects at low temperature in superconducting magnet materials should be reviewed to estimate the stability of the superconducting magnet system in operation and its life. The pion capture superconducting solenoids for the COMET experiment are designed with aluminum stabilized superconducting cable to reduce the nuclear heating by neutrons. Also, the heat is designed to be transferred in pure aluminum strips. Irradiation effects on the electrical conductance of aluminum stabilizer and other materials are tested at cryogenic temperature using the reactor neutrons. This paper describes the study on the irradiation effects for the magnet developments.
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