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@inbook{doi:10.7566/JPSCP.45.011164,

title = {Recent Upgrade on Muon Target at J-PARC},
booktitle = {Proceedings of the 4th J-PARC Symposium 2024},
chapter = {},
pages = {},
doi = {10.7566/JPSCP.45.011164},
URL = {https://journals.jps.jp/doi/abs/10.7566/JPSCP.45.011164},
eprint = {https://journals.jps.jp/doi/pdf/10.7566/JPSCP.45.011164},
    abstract = { A pulsed muon beam has been generated by a 3-GeV 333-microA proton beam on a muon target made of graphite at J-PARC, Materials and Life Science Experimental Facility (MLF). The first muon beam was successfully generated in 2008, and 300-kW proton beam has been operated by a fixed target till 2014. To extend the lifetime, a muon rotating target, in which the radiation damage is distributed to a wider area, had been developed. The muon rotating target \#1 was installed in 2014 and operated for five years until 2019. The rotating target \#2 has stably operated at 950 kW until now in 2024. Simultaneously, in the COMET experiment to explore the muon-electron conversion process, 8 GeV proton beam with an intensity of 3.2 kW in Phase 1 and 56 kW in Phase 2 will irradiate targets in a superconducting solenoid magnet. In this presentation, the recent upgrade of the muon target at J-PARC MLF MUSE, the COMET target will be introduced. }
}