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- Title
Development of microwave cavities for measurement of muonium hyperfine structure at J-PARC.
- Authors
Tanaka, K S; Iwasaki, M; Kamigaito, O; Kanda, S; Kawamura, N; Matsuda, Y; Mibe, T; Nishimura, S; Saito, N; Sakamoto, N; Seo, S; Shimomura, K; Strasser, P; Suda, K; Tanaka, T; Torii, H A; Toyoda, A; Ueno, Y; Yoshida, M
- Abstract
The MuSEUM collaboration is planning measurements of the ground-state hyperfine structure (HFS) of muonium at the Japan Proton Accelerator Research Complex (J-PARC), Materials and Life Science Experimental Facility. The high-intensity beam that will soon be available, the H-line, allows for more precise measurements by one order of magnitude. We plan to conduct two staged measurements. First, we will measure the Mu-HFS in a near-zero magnetic field, and thereafter we will measure it in a strong magnetic field. We have developed two microwave cavities for this purpose. Furthermore, we evaluated the systematic uncertainties from such a fluctuation of microwave fields and confirmed the requirements for the microwave system; we use a microwave field distribution calculated with the finite element method.
- Subjects
CAVITY resonators; HYPERFINE structure; ATOMIC spectra; MAGNETIC fields; MUONIUM
- Publication
Progress of Theoretical & Experimental Physics: PTEP, 2021, Vol 2021, Issue 5, p1
- ISSN
2050-3911
- Publication type
Article
- DOI
10.1093/ptep/ptab047