| Title |
Re-Acceleration of Ultra Cold Muon in J-PARC Muon Facility |
| Authors |
- Y. Kondo, K. Hasegawa, T. Morishita
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
- S. Bae, H. Choi, S. Choi, B. Kim, H.S. Ko
SNU, Seoul, Republic of Korea
- Y. Fukao, K. Futatsukawa, N. Kawamura, T. Mibe, Y. Miyake, M. Otani, K. Shimomura, T. Yamazaki, M. Yoshida
KEK, Tsukuba, Japan
- N. Hayashizaki
RLNR, Tokyo, Japan
- T. Iijima, Y. Sue
Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan
- H. Iinuma, Y. Nakazawa
Ibaraki University, Ibaraki, Japan
- K. Ishida
RIKEN Nishina Center, Wako, Japan
- Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
- Y. Iwata
NIRS, Chiba-shi, Japan
- R. Kitamura
University of Tokyo, Tokyo, Japan
- S. Li
The University of Tokyo, Graduate School of Science, Tokyo, Japan
- G.P. Razuvaev
Budker INP & NSU, Novosibirsk, Russia
- N. Saito
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
|
| Abstract |
J-PARC is developing the reacceleration system of the ultra slow (30 meV) muon (USM) obtained by two-photon laser resonant ionization of muonium atoms. The muon beam thus obtained has low emittance, meeting the requirement for the g-2/EDM experiment. J-PARC E34 experiment aims to measure the muon anomalous magnetic moment (g-2) with a precision of 0.1 ppm and search for EDM with a sensitivity to 10⁻²¹ e cm. The USM's are accelerated to 212 MeV by using a muon dedicated linac to be a ultra cold muon beam. The muon LINAC consists of an RFQ, a inter-digital H-mode DTL, disk and washer coupled cell structures, and disk loaded structures. The ultra-cold muons will have an extremely small transverse momentum spread of 0.1% with a normalized transverse emittance of around 1.5 pi mm-mrad. Proof of the slow muon acceleration scheme is an essential step to realize the world first muon linac. In October 2017, we have succeeded to accelerate slow negative muoniums generated using a simpler muonium source to 89 keV. In this talk, present design of the muon linac and the result of the world first muon acceleration experiment are reported.
|
| Funding |
This work is supported by JSPS KAKENHI Grant Numbers JP15H03666, JP16H03987, and JP16J07784. |
| Paper |
download FRXGBF1.PDF [4.784 MB / 6 pages] |
| Slides |
download FRXGBF1_TALK.PDF [8.373 MB] |
| Export |
download ※ BibTeX
※ LaTeX
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※ EndNote |
| Conference |
IPAC2018, Vancouver, BC, Canada |
| Series |
International Particle Accelerator Conference (9th) |
| Proceedings |
Link to full IPAC2018 Proccedings |
| Session |
MC3 Orals |
| Date |
04-May-18 09:00–10:30 |
| Main Classification |
03 Novel Particle Sources and Acceleration Technologies |
| Sub Classification |
A09 Muon Accelerators and Neutrino Factories |
| Keywords |
linac, rfq, experiment, acceleration, emittance |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Shane Koscielniak (TRIUMF, Vancouver, BC, Canada); Todd Satogata (JLab, Newport News, VA, USA); Volker RW Schaa (GSI, Darmstadt, Germany); Jana Thomson (TRIUMF, Vancouver, BC, Canada) |
| ISBN |
978-3-95450-184-7 |
| Published |
June 2018 |
| Copyright |
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