Design and construction of the ultra-slow muon beamline at J-PARC/MUSE

13th International Conference on Muon Spin Rotation, Relaxation and Resonance

Strasser, P.^1,2 ; Ikedo, Y.^1,2 ; Makimura, S.^1,2 ; Nakamura, J.^1,2 ; Nishiyama, K.^1,2 ; Shimomura, K.^1,2 ; Fujimori, H.^1,2 ; Adachi, T.^1,2 ; Koda, A.^1,2 ; Kawamura, N.^1,2 ; Kobayashi, Y.^1,2 ; Higemoto, W.^2,3 ; Ito, T.U.^2,3 ; Nagatomo, T.^4 ; Torikai, E.^5 ; Kadono, R.^1,2 ; Miyake, Y.^1,2

Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki

z305-0801, Japan^1

Muon Science Section, Materials and Life Science Division, J-PARC Center, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki

319-1195, Japan^2

Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki

319-1195, Japan^3

Ion Source Team, Accelerator Group, RIKEN Nishina Center, Hirosawa-2-1, Wako, Saitama

351-0198, Japan^4

Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Takeda 4-3-11, Kofu, Yamanashi

400-8511, Japan^5

关键词: Construction status;    Design and construction;    Design parameters;    Laser resonant;    Muon science facility;    Re-acceleration;    Science laboratories;    Tungsten foils;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/551/1/012065/pdf
DOI  :  10.1088/1742-6596/551/1/012065

来源: IOP

【 摘 要 】

At the J-PARC Muon Science Facility (MUSE), a new Ultra-Slow Muon beamline is being constructed to extend the μSR technique from bulk material to thin films, thus empowering a wide variety of surface and nano-science studies, and also a novel 3D imaging with the "ultra-slow muon microscope". Ultra-slow muons will be produced by the re-acceleration of thermal muons regenerated by the laser resonant ionization of muonium atoms evaporated from a hot tungsten foil, a method that originated from the Meson Science Laboratory at KEK. The design parameters, construction status and initial beam commissioning are reported.