Measurement of the gamma-ray energy spectrum of the educational Kinki University Reactor (UTR-KINKI)

Satoru Endo; Tatsuro Taniguchi; Tsuyoshi Kajimoto; Kenichi Tanaka; Masashi Takada; So Kamada; Tetsuo Horiguchi; Kazuo Fujikawa

doi:10.1016/j.apradiso.2017.03.010

Measurement of the gamma-ray energy spectrum of the educational Kinki University Reactor (UTR-KINKI)

Appl Radiat Isot. 2017 Jun:124:90-92. doi: 10.1016/j.apradiso.2017.03.010. Epub 2017 Mar 16.

Authors

Satoru Endo¹, Tatsuro Taniguchi¹, Tsuyoshi Kajimoto¹, Kenichi Tanaka¹, Masashi Takada², So Kamada³, Tetsuo Horiguchi⁴, Kazuo Fujikawa⁵

Affiliations

¹ Quantum Energy Applications, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
² National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan.
³ National Maritime Research Institute, 6-38-1 Shinkawa, Mitaka, Tokyo 181-0004, Japan.
⁴ Atomic Energy Research Institute, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
⁵ Department of Life Science, Faculty of Science and Technology, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.

PMID: 28347899
DOI: 10.1016/j.apradiso.2017.03.010

Abstract

The gamma-ray energy spectrum of the Kinki University Reactor (UTR-KINKI) was estimated from Ge detector measurements combined with Monte Carlo N-particle transport criticality calculations. The gamma rays mainly originated from prompt fission components, although small amounts of gamma rays from (n,γ) reactions, fission product gamma rays, and activation gamma rays were detected. The averaged gamma-ray tissue kerma rate in the irradiation port during UTR-KINKI operation at 1W was calculated as 10.5cGy/h based on the estimated gamma-ray energy spectrum. This value is consistent with a previous measurement with paired ionization chambers and a tissue equivalent gas proportional counter. This result demonstrates the reliability of the estimated gamma-ray energy spectrum.