The MUSE Target Chamber Post Veto
Abstract
The Muon Scattering Experiment (MUSE) was developed to address the proton radius puzzle through simultaneous electron-proton and muon-proton scattering using the Paul Scherrer Institute's PiM1 secondary beamline. MUSE uses a large-solid-angle, non-magnetic spectrometer to detect beam particles scattering from a liquid hydrogen cell contained within a vacuum chamber. Due to the large scattering windows, the structural integrity of the chamber is supported by posts located at small scattering angles. While out of the acceptance, particles in the tails of the beam distribution can strike these posts, causing a significant trigger background. We describe the design and performance of the Target Chamber Post Veto (TCPV) detector installed inside the vacuum chamber to remove these background events at the trigger level.
Cite
@article{arxiv.2602.10279,
title = {The MUSE Target Chamber Post Veto},
author = {R. Ratvasky and T. Rostomyan and M. Ali and H. Atac and F. Barchetti and J. C. Bernauer and W. J. Briscoe and A. Christopher Ndukwe and E. W. Cline and S. Das and K. Deiters and E. J. Downie and Z. Duan and A. Flannery and M. Foster and A. Friebolin and M. Gantert and R. Gilman and A. Golossanov and J. Guo and J. Hirschman and A. Hofer and N. S. Ifat and Y. Ilieva and D. Jayakodige and T. Krahulik and M. Kohl and I. Lavrukhin and W. Lin and W. Lorenzon and P. MohanMurthy and M. Nicol and M. Paolone and T. Patel and A. Prosnyakov and R. D. Ransome and R. Raymond and H. Reid and P. E. Reimer and R. Richards and G. Ron and O. M. Ruimi and K. Salamone and S. Shrestha and N. Sparveris and S. Strauch and N. Wuerfel and D. A. Yaari and C. Zimmerli},
journal= {arXiv preprint arXiv:2602.10279},
year = {2026}
}
Comments
23 pages, 22 figures