Japan Geoscience Union Meeting 2021

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[E] Oral

M (Multidisciplinary and Interdisciplinary) » M-AG Applied Geosciences

[M-AG37] CTBT IMS Technologies for Detecting Nuclear Explosion and Their Applications to Earth Science

Sun. Jun 6, 2021 3:30 PM - 5:00 PM Ch.20 (Zoom Room 20)

convener:Nurcan Meral Ozel(Comprehensive Nuclear-Test-Ban Treaty Organization), Hiroyuki Matsumoto(Japan Agency for Marine-Earth Science and Technology), Dirk Metz(Japan Agency for Marine-Earth Science and Technology), Yosuke Naoi(Japan Atomic Energy Agency), Chairperson:Nurcan Meral Ozel(Comprehensive Nuclear-Test-Ban Treaty Organization), Hiroyuki Matsumoto(Japan Agency for Marine-Earth Science and Technology), Dirk Metz(Japan Agency for Marine-Earth Science and Technology)

4:15 PM - 4:30 PM

[MAG37-04] Operation of IMS radionuclide stations in Japan

*Yutaka Tomita1, Yuichi Kijima1, Akiko FURUNO1, Yoichi Yamamoto1 (1.Japan Atomic Energy Agency)

Keywords:CTBT, RN38, RN37, RASA, SAUNA

The Japan Atomic Energy Agency (JAEA)has operated two radionuclide stations which are Takasaki radionuclide station (RN38) and Okinawa radionuclide station (RN37) for the CTBT (Comprehensive Nuclear- Test-Ban Treaty) International Monitoring System (IMS). RN38 was built in the Takasaki Advanced Radiation Research Institute of the National Institutes for Quantum and Radiological Science and Technology (QST) in 2002. Radioactivity of particulate radionuclides and radioxenon gases are measured at RN38 by using a Radionuclide Aerosol Sampler / Analyzer (RASA) and a Swedish Automatic Unit for Noble Gas (SAUNA) respectively. It was worthy of special mention that the SAUNA of RN38 detected the radioxenons which were related to the DPRK-3 event in 2013. RN37 was installed in a renovated facility at the Okinawa Tracking and Communication Station of the Japan Aerospace Exploration Agency (JAXA) in 2006. It measures only radioactivity of particulate radionuclides by using a RASA. JAEA contributes to the CTBT international verification regime through these activities. Operation and some monitoring results of both radionuclide stations will be reported in this presentation.