1. Monitoring System for the Gold Target by Radiation Detectors in Hadron Experimental Facility at J-PARC.
- Author
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Ryotaro Muto, Keizo Agari, Kazuya Aoki, Kotaro Bessho, Masayuki Hagiwara, Erina Hirose, Masaharu Ieiri, Ruri Iwasaki, Yohji Katoh, Jun-ichi Kitagawa, Michifumi Minakawa, Yuhei Morino, Kiwamu Saito, Yoshinori Sato, Shin'ya Sawada, Yoshihisa Shirakabe, Yoshihiro Suzuki, Hitoshi Takahashi, Kazuhiro Tanaka, and Akihisa Toyoda more...
- Subjects
NUCLEAR counters ,PARTICLE beams ,NUCLEAR physics ,PROTON beams ,RADIOACTIVITY ,SEMICONDUCTOR detectors - Abstract
At the Hadron Experimental Facility in J-PARC, we inject a 30-GeV proton beam into a gold target to produce secondary particle beams required for various particle and nuclear physics experiments. The gold target is placed in a hermetic chamber, and helium gas is circulated in the chamber to monitor the soundness of the target. The radioactivity in helium gas is continuously monitored by gamma-ray detectors such as a germanium detector and a NaI(Tl) detector. Beam operations with those target-monitoring systems were successfully performed from April to June and October to December 2015, and from May to June 2016. In this paper, the details of the helium gas circulation system and gamma-ray detectors and the analysis results of the obtained gamma-ray spectra are reported. [ABSTRACT FROM AUTHOR] more...
- Published
- 2017
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