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2018•Journal of Physics Conference SeriesOpen access

Muon Profile Measurement After Acceleration With a Radio-Frequency Quadrupole linac

M. Otani, Y. Sue, Y. Fukao, K. Futatsukawa, Naritoshi Kawamura, T. Mibe, Yasuhiro Miyake, Koichiro Shimomura, T. Yamazaki, Toru Iijima, Bae Bae, H. Choi, Seonho Choi, B Kim, H. S. Ko, K. Hasegawa, Yasuhiro Kondo, Takatoshi Morishita, H. Iinuma, Yuga Nakazawa, K. Ishida, R. Kitamura, S. Li, G.P. Razuvaev, Naohito Saito, Eunil Won

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Abstract

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 phosphor screen, and a CCD camera. The measured profile in the vertical direction is consistent with the simulation. This profile measurement is one of the 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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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 phosphor screen, and a CCD camera. The measured profile in the vertical direction is consistent with the simulation. This profile measurement is one of the 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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Available abstract

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 phosphor screen, and a CCD camera. The measured profile in the vertical direction is consistent with the simulation. This profile measurement is one of the milestones for realizing a muon linac for measurement of the muon anomalous magnetic moment at the Japan Proton Accelerator Research Complex.

Key concepts: Radio-frequency quadrupole, Muon, Physics, Linear particle accelerator, Quadrupole, Beam (structure), Nuclear physics, Acceleration

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