[8p-N403-1~15] CS.1 Code-sharing Session of 2.3&7.4

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-N403-11] Estimation of the Thermal Neutron Fluence Using ³⁶Cl Produced in a Power Cable Sheath at the KEK-12GeV Proton Synchrotron

〇(M1)Tatsuhiro Kimura¹, Go Yoshida², Hiroshi Matsumura², Masumi Matsumura¹, Masaki Ishida², Eisuke Watanabe², Kiyokazu Tsugane², Eunji Lee², Ryoken Shiobara³, Masahiro Mitsuhashi³, Hiroshi Yashima⁴, Yuuki Hirano³, Yusuke Nakayashiki³, Koji Oishi³, Saori Kurita⁵, Miki Nakada⁵, Takuya Saze⁵, Bui Ngoc Thien⁶, Tsutomu Takahashi¹, Tetsuro Yoshida¹, Kimikasu Sasa¹ (1.Tsukuba Univ., 2.High Energy Accelerator Research Organization, 3.Japan Environment Research Co., Ltd., 4.Kyoto Univ., 5.National Institute for Fusion Science, 6.The Graduate University for Advanced Studies)

Keywords:

Accelerator Mass Spectrometry,Chlorine-36,Cable

.In order to evaluate activation during decommissioning of the accelerator facility, the long-lived radionuclide ³⁶Cl was measured using Accelerator Mass Spectrometry (AMS) to estimate the thermal neutron fluence. A power cable sheath in the KEK-12GeV-PS tunnel was adopted as a sample, and chlorine content was measured by neutron activation analysis. AMS was performed after purifying AgCl. The ³⁶Cl/³⁵Cl ratio and known cross section were used to estimate the thermal neutron fluence.