https://doi.org/10.1051/epjconf/202328201016
New beamlines and future prospects of the J-PARC muon facility
1 High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801, Japan
2 The Graduate University for Advanced Studies (SOKENDAI), Ibaraki 305-0801, Japan
3 Osaka University, Osaka 560-0043, Japan
4 Osaka Metropolitan University, Osaka 558-8585, Japan
5 Okayama University, Okayama 700-8530, Japan
6 Nagoya University, Nagoya 464-8601, Japan
* Corresponding author: takayuki@post.kek.jp
Published online: 3 April 2023
At the J-PARC muon facility (MUSE), new beamlines started operation recently. H-line is a high-intensity pulsed muon beamline for fundamental physics experiments. The first beam of the H-line was delivered to its first branch (H1 area) in January 2022, where a precise measurement of the muonium hyperfine structure and a search for μ-e conversion will be conducted. Further extension of the second branch of the H-line for a muon g-2/EDM experiment and a transmission muon microscope project is also ongoing. In addition, the second branch of the surface muon beamline (S2 area of the S-line) was opened for a muonium 1S-2S spectroscopy experiment in FY2021. In this paper, the recent upgrade and present status of the J-PARC muon facility and its prospects are presented.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
