Ultra Slow Muon Microscope at MUSE / J-PARC

1st Conference on Light and Particle Beams in Materials Science 2013

物理学;材料科学

Nakamura, J.^1,2 ; Nagatomo, T.^1,2 ; Oishi, Y.^3 ; Ikedo, Y.^1,2 ; Strasser, P.^1,2 ; Saito, N.^4 ; Miyazaki, K.^4 ; Yokoyama, K.^3 ; Okamura, K.^4,5 ; Miyake, Y.^1,2 ; Makimura, S.^1,2 ; Nishiyama, K.^1,2 ; Shimomura, K.^1,2 ; Kawamura, N.^1,2 ; Koda, A.^1,2 ; Higemoto, W.^1,6 ; Wada, S.^4,5 ; Iwasaki, M.^3 ; Torikai, E.^7

J-PARC Center, Ibaraki 319-1195, Tokyo, Japan^1

Muon Science Laboratory, IMSS, KEK, Tsukuba, Ibaraki 305-0801, Japan^2

RIKEN Nishina Center, Wako, Saitama 351-0198, Japan^3

RIKEN Center for Advanced Photonics, Wako, Saitama 351-0198, Japan^4

Megaopto Co., LTD., Wako, Saitama 351-0104, Japan^5

Advanced Science Research Center, Japan Atomic Energy Agency, Tokyo Ibaraki 319-1195, Japan^6

University of Yamanashi, Kofu Yamanashi 400-8511, Japan^7

关键词: Coherent radiation;    Laser resonant;    Muon beam;    Muonium;    Production chambers;    Tungsten foils;    Vacuum ultraviolet radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/502/1/012042/pdf
DOI  :  10.1088/1742-6596/502/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

We report current constructing states of the Ultra Slow Muon Beam at U-line / MUSE / J-PARC, which are supported by thermal muonium (Mu, μ+e-) production with the most intense pulsed slow muon beam, laser resonant ionization, and transportation of Ultra Slow Muon Beam. A thermal Mu is produced by a hot tungsten foil in a Mu-production chamber. At the laser resonant ionization process, a thermal Mu is ionized by coherent vacuum ultraviolet radiation and coherent 355-nm radiation. The coherent radiation sources are developed at RIKEN, installed in a laser cabin, and connected via a VUV steering chamber with the Mu-production chamber.