| Autor: |
Muto Ryotaro, Agari Keizo, Aoki Kazuya, Bessho Kotaro, Hagiwara Masayuki, Hirose Erina, Ieiri Masaharu, Iwasaki Ruri, Katoh Yohji, Kitagawa Jun-ichi, Minakawa Michifumi, Morino Yuhei, Saito Kiwamu, Sato Yoshinori, Sawada Shin’ya, Shirakabe Yoshihisa, Suzuki Yoshihiro, Takahashi Hitoshi, Tanaka Kazuhiro, Toyoda Akihisa, Watanabe Hiroaki, Yamanoi Yutaka |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
EPJ Web of Conferences, Vol 153, p 07004 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/201715307004 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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