Y. Kondo, R. Kitamura, Y. Fuwa, T. Morishita, K. Moriya, T. Takayanagi, M. Otani, E. Cicek, H. Ego, Y. Fukao, K. Futatsukawa, N. Kawamura, T. Mibe, Y. Miyake, S. Mizobata, N. Saito, K. Shimomura, T. Yamazaki, M. Yoshida, Y. NakazawaH. Iinuma, Y. Takeuchi, J. Tojo, K. Sumi, M. Yotsuzuka, T. Iijima, K. Inami, Y. Sue, K. Suzuki, K. Ishida, N. Hayashizaki, Y. Iwashita, K. Hasegawa, Y. Iwata, H. Yasuda, S. Bae, H. Choi, S. Choi, B. Kim, H. S. Ko, E. Won, G. P. Razuvaev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The muon linac project for the precise measurement of the muon anomalous magnetic and electric dipole moments, which is currently one of the hottest issues of the elementary particle physics, is in progress at J-PARC. The muons from the J-PARC muon facility are once cooled to room temperature, then accelerated up to 212 MeV with a normalized emittance of 1.5 pi mm mrad and a momentum spread of 0.1%. Four types of accelerating structures are adopted to obtain the efficient acceleration with a wide beta range from 0.01 to 0.94. The project is moving into the construction phase. We already demonstrated the re-acceleration scheme of the decelerated muons using a 324-MHz RFQ in 2017. The high-power test of the 324-MHz Interdigital H-mode (IH) DTL using a prototype cavity has been performed in 2021. The fabrication of the first module of 14 modules of the 1296-MHz Disk and Washer (DAW) CCL will be done to confirm the production process. Moreover, the design work of the traveling wave accelerating structure for the high beta region has been almost finished and prototyping is started. In this paper, the recent progress toward the realization of the world first muon linac will be presented.

Original languageEnglish
Title of host publicationLINAC 2022 - International Linear Accelerator Conference, Proceedings
PublisherJACoW Publishing
Number of pages6
ISBN (Electronic)9783954502158
Publication statusPublished - 2022
Event31st International Linear Accelerator Conference, LINAC 2022 - Liverpool, United Kingdom
Duration: 2022 Aug 282022 Sept 2

Publication series

NameProceedings - Linear Accelerator Conference, LINAC
ISSN (Print)2226-0366


Conference31st International Linear Accelerator Conference, LINAC 2022
Country/TerritoryUnited Kingdom

Bibliographical note

Publisher Copyright:
© 2022 Proceedings - Linear Accelerator Conference, LINAC. All rights reserved.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'THE MUON LINAC PROJECT AT J-PARC'. Together they form a unique fingerprint.

Cite this