Paper |
Title |
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MOPOST017 |
Design and Beam Dynamics Study of Disk-Loaded Structure for Muon Linac |
94 |
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- K. Sumi, T. Iijima, K. Inami, Y. Sue, M. Yotsuzuka
Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan
- H. Ego, T. Mibe, N. Saito, M. Yoshida
KEK, Ibaraki, Japan
- T. Iijima
KMI, Nagoya, AIchi Prefecture, Japan
- Y. Kondo, K. Moriya
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
- Y. Nakazawa
Ibaraki University, Hitachi, Ibaraki, Japan
- M. Otani
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
- Y. Takeuchi
Kyushu University, Fukuoka, Japan
- H.Y. Yasuda
University of Tokyo, Tokyo, Japan
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The disk-loaded structures (DLS) in the muon LINAC are under development for the J-PARC muon g-2/EDM experiment. Four DLSs with an accelerating gradient of 20 MV/m take charge of muon acceleration from 40 MeV to 212 MeV, which corresponds to 70% to 94% of the speed of light. The quasi-constant gradient type TM01-2pi/3 mode DLSs with gradually varying disk spacing was designed and confirmed that the cumulative phase slip due to the mismatch between muon and phase velocity can be suppressed to less than 2 degrees at the frequency of 2592 MHz. In addition, the optimum synchronous phase and the lattice were investigated to satisfy the requirements of the total emittance less than 1.5 pi mm mrad and the momentum spread less than 0.1% in RMS.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOST017
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About • |
Received ※ 19 May 2022 — Revised ※ 09 June 2022 — Accepted ※ 16 June 2022 — Issue date ※ 20 June 2022 |
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TUPOMS046 |
Fabrication and Low-Power Test of Disk-and-Washer Cavity for Muon Acceleration |
1534 |
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- Y. Takeuchi, J. Tojo
Kyushu University, Fukuoka, Japan
- E. Cicek, H. Ego, K. Futatsukawa, N. Kawamura, T. Mibe, M. Otani, N. Saito, T. Yamazaki, M. Yoshida
KEK, Ibaraki, Japan
- Y. Iwashita
Kyoto University, Research Reactor Institute, Osaka, Japan
- R. Kitamura, T. Morishita
JAEA/J-PARC, Tokai-mura, Japan
- Y. Kondo
JAEA, Ibaraki-ken, Japan
- Y. Nakazawa
Ibaraki University, Hitachi, Ibaraki, Japan
- Y. Sue, K. Sumi, M. Yotsuzuka
Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan
- H.Y. Yasuda
University of Tokyo, Tokyo, Japan
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The muon g-2/EDM experiment is under preparation at Japan Proton Accelerator Research Complex (J-PARC), and the muon linear accelerator for the experiment is being developed. A Disk-and-Washer (DAW) cavity will be used for the medium-velocity part of the accelerator, and muons will be accelerated from v/c=ß=0.3 to 0.7 with the operating frequency of 1.296 GHz. Machining, brazing, and low-power measurements of a prototype cell reflecting the design of the first tank of DAW were performed to identify fabrication problems. Several problems were identified, such as displacement of washers during brazing, and some measures will be taken in the actual tank fabrication. In this paper, the results of the prototype cell fabrication will be reported.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOMS046
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About • |
Received ※ 08 June 2022 — Revised ※ 15 June 2022 — Accepted ※ 16 June 2022 — Issue date ※ 23 June 2022 |
Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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