EPJ Web Conf.
Volume 153, 2017ICRS-13 & RPSD-2016, 13th International Conference on Radiation Shielding & 19th Topical Meeting of the Radiation Protection and Shielding Division of the American Nuclear Society - 2016
|Number of page(s)||6|
|Section||7. Poster Presentations|
|Published online||25 September 2017|
Monitoring System for the Gold Target by Radiation Detectors in Hadron Experimental Facility at J-PARC
High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
* Corresponding author: email@example.com
Published online: 25 September 2017
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.
© The Authors, published by EDP Sciences, 2017
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