Abstract
A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the KL→π0νν̄ decay. We developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67% of neutron-induced single hadronic clusters and 86% of neutron-induced two-cluster events while keeping more than 90% of photon-induced single electromagnetic clusters and two-photon events.
Original language | English |
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Article number | 164825 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 987 |
DOIs | |
Publication status | Published - 2021 Jan 21 |
Bibliographical note
Publisher Copyright:© 2020 Elsevier B.V.
Keywords
- Calorimeter
- CsI crystal
- Pulse shape discrimination
- Rare kaon decay
- Waveform analysis
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation