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Muon profile measurement after acceleration with a radio-frequency quadrupole linac

Otani, Masashi*; Sue, Yuki*; Fukao, Yoshinori*; Futatsukawa, Kenta*; Kawamura, Naritoshi*; Mibe, Tsutomu*; Miyake, Yasuhiro*; Shimomura, Koichiro*; Yamazaki, Takayuki*; Iijima, Toru*; Bae*; Choi, H.*; Choi, S.*; Kim, B.*; Ko, H. S.*; Hasegawa, Kazuo; Kondo, Yasuhiro   ; Morishita, Takatoshi  ; Iinuma, Hiromi*; Nakazawa, Yuga*; Ishida, Katsuhiko*; Kitamura, Ryo*; Li, S.*; Razuvaev, G. P.*; Saito, Naohito; Won, E.*

We have measured the muon beam profile after acceleration using a radio frequency quadrupole linac (RFQ). Positive muons are injected to an aluminum degrader and negative muoniums (Mu$$^{-}$$) are generated. The generated Mu$$^{-}$$s are extracted by an electrostatic lens and accelerated to 89 keV by the RFQ. The accelerated Mu$$^{-}$$s are transported to a beam profile monitor (BPM) through a quadrupole magnet pair and a bending magnet. The BPM consists of a micro-channel plate, a phospher screen, and a CCD camera. Measured profile in the vertical direction is consistent to the simulation. This profile measurement is one of milestones for realizing a muon linac for measurement of the muon anomalous magnetic moment at the Japan Proton Accelerator Research Complex.

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