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arXiv · 1607.00028

Phase rotation of muon beams for producing intense low-energy muon beams

D. Neuffer·Y. Bao·G. Hansen
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Abstract

Low-energy muon beams are useful for rare decay searches, which provide access to new physics that cannot be addressed at high-energy colliders. However, muons are produced within a broad energy spread unmatched to the low-energy required. In this paper we outline a phase rotation method to significantly increase the intensity of low-energy muons. The muons are produced from a short pulsed proton driver, and develop a time-momentum correlation in a drift space following production. A series of rf cavities is used to bunch the muons and phase-energy rotate the bunches to a momentum of around 100 MeV/c. Then another group of rf cavities is used to decelerate the muon bunches to low-energy. This obtains ~0.1 muon per 8 GeV proton, which is significantly higher than currently planned Mu2e experiments, and would enable a next generation of rare decay searches, and other intense muon beam applications.

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D. Neuffer, Y. Bao, G. Hansen. 2016-06-30. Phase rotation of muon beams for producing intense low-energy muon beams. https://arxiv.org/abs/1607.00028

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