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Report No.

Commissioning of the diagnostic beam line for the muon RF acceleration with H$$^{-}$$ ion beam derived from the ultraviolet light

Nakazawa, Yuga*; Iinuma, Hiromi*; Otani, Masashi*; Kawamura, Naritoshi*; Mibe, Tsutomu*; Yamazaki, Takayuki*; Kitamura, Ryo*; Kondo, Yasuhiro   ; Saito, Naohito; Sue, Yuki*

A muon LINAC is under research and development for a precise measurement of muon g-2/EDM at J-PARC. We conducted an experiment of a muon RF acceleration on October and December, 2017. The surface muon beam is irradiated to a metal degrader to generate slow negative muonium. The slow muoniums are accelerated to 90keV with an electrostatic accelerator and an RFQ. Prior to muon RF acceleration, we conducted a commissioning of the diagnostic beam line consisting of two quadrupole magnets and a bending magnet. The ultraviolet light is irradiated to an aluminum foil and forms H$$^{-}$$ ion. It is accelerated with the electrostatic accelerator and can be detected as a pseudo muon beam. This system allowed us to check operation for the diagnostic beam line, which is essential task for transportation and momentum selection of the negative muonium. In this presentation, I would like to report the performance evaluation of the diagnostic beam line by H$$^{-}$$ ions.



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