Volume 476 - 42nd International Conference on High Energy Physics (ICHEP2024) - Detectors for Future Facilities, R&D, Novel Techniques
Sub-GeV particle identification with aerogel Cherenkov threshold detectors and tagged photon beam for the Water Cherenkov Test Experiment
A. Craplet
Full text: pdf
Pre-published on: December 17, 2024
Published on: April 29, 2025
Abstract
The Water Cherenkov Test Experiment (WCTE) will be installed in CERN’s recently upgraded T9
“Test Beam” Area in Autumn 2024. It has three goals: to prototype photosensor and calibration
systems for Hyper-Kamiokande, to develop new calibration and reconstruction methods for water
Cherenkov detectors and to measure lepton and hadron scattering on water. The collaboration
performed a 3-week-long beam test in July 2023. It uses newly developed aerogel Cherenkov
threshold counters (ACTs) to perform an efficient separation of pions from muons in the sub-GeV
range, which had not been done before. Additionally, a new compact tagged photon beamline was
developed, composed of a Neodymium (N52) Halbach array permanent magnet and a hodoscope
array placed downstream of the magnet. The combination of the ACTs and tagged photon beamline
provides sub-GeV p, e, pi, mu and gamma test beams. Using this setup, the collaboration was able
to estimate the beam flux of CERN’s T9 beam.
DOI: https://doi.org/10.22323/1.476.1114
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