2024-03-28T11:48:40Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02003798
2024-03-04T02:11:39Z
320:321:322
Evaluation of the thermal neutron sensitivity, output linearity, and gamma-ray response of optical fiber-based neutron detectors using Li-glass scintillator
Ishikawa, Akihisa
Watanabe, Kenichi
Yamazaki, Atsushi
Yoshihashi, Sachiko
Imai, Shigefumi
Masuda, Akihiko
Matsumoto, Tetsuro
Tanaka, Hiroki
Sakurai, Yoshinori
Nogami, Mitsuhiro
Hitomi, Keitaro
Uritani, Akira
Harano, Hideki
Neutrons
Gamma-rays
Optical fiber-based neutron detectors
Real-time measurements
Radiation monitoring
Scintillator
Li-glass
An optical fiber-based neutron detector can be used as a real-time neutron monitor for an intense neutron field. In this study, optical fiber-based neutron detectors were fabricated using Li-glass scintillator. The thermal neutron sensitivity, upper limit of the output linearity, and response to gamma rays from 60Co and Cd were evaluated. The thermal neutron sensitivity was proportional to the mass of the Li-glass scintillator, and the calibration factor was 2.06 × 10^-6 and 3.18 × 10^-6 cps/(n/cm 2/s)/g for the lower-level discrimination of the peak and valley channel, respectively. The detector output linearity was confirmed to be up to nearly 2 Mcps. While evaluating the response to gamma rays, for both 60Co and Cd, the gamma-ray counting rate was found to be smaller than the uncertainty associated with counting statistics in most expected applications where the neutron counting rate was >1 kcps.
journal article
Elsevier
2022-02-11
application/pdf
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
1025
166074
01689002
https://nagoya.repo.nii.ac.jp/record/2003798/files/NIMA-D-21-00773_R1.pdf
eng
https://doi.org/10.1016/j.nima.2021.166074
© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/