The muon beam monitor for the FAMU experiment: design, simulation, test, and operation

作者：R. Rossini, G. Baldazzi, Stefano Banfi, M. Baruzzo, R. Benocci, R. Bertoni, M. Bonesini, S. Carsi, D. Cirrincione, M. Clemenza, Lorenzo Colace, A. de Bari, C. De Vecchi, Eugenio Fasci, R. Gaigher, L. Gianfrani, A. D. Hillier, K. Ishida, P.J.C. King, J. S. Lord, R. Mazza, A. Menegolli, E. Mocchiutti, S. Monzani, Luigi Moretti, C. Petroselli, C. Pizzolotto, M.C. Prata, M. Pullia, L. Quintieri, Roberta Ramponi, M. Rossella, A. Sbrizzi, Guido Toci, L. Tortora, E. Vallazza, K. Yokoyama, A. Vacchi · 发表于：Frontiers in Detector Science and Technology · 年份：2024 · DOI：10.3389/fdest.2024.1438902 · 被引用次数：5 · 研究领域：Particle Detector Development and Performance、Atomic and Subatomic Physics Research、Muon and positron interactions and applications

FAMU is an INFN-led muonic atom physics experiment based at the RIKEN-RAL muon facility at the ISIS Neutron and Muon Source (United Kingdom). The aim of FAMU is to measure the hyperfine splitting in muonic hydrogen to determine the value of the proton Zemach radius with an accuracy better than 1%. The experiment has a scintillating-fibre hodoscope for beam monitoring and data normalisation. In order to carry out muon flux estimation, low-rate measurements were performed to extract the single-muon average deposited charge. Then, detector simulation in Geant4 and FLUKA allowed a thorough understanding of the single-muon response function, which is crucial for determining the muon flux. This work presents the design features of the FAMU beam monitor, along with the simulation and absolute calibration measurements in order to enable flux determination and enable data normalisation.