We studied the inner structure of the nuclear reactor of the Japan Atomic Power Company (JAPC) at Tokai, Japan, by the muon radiography. In this study, muon detectors were placed outside of the reactor building. By detecting cosmic muons penetrating through the wall of the reactor building, we could successfully identify the objects such as the containment vessel, pressure vessel, and other structures of the reactor. We also observed a concentration of heavy material which can be attributed to the nuclear fuel assemblies stored in the nuclear fuel storage pool.
@article{arxiv.1902.01992,
title = {Imaging the Inner Structure of a Nuclear Reactor by Cosmic Muon Radiography},
author = {Hirofumi Fujii and Kazuhiko Hara and Shogo Hashimoto and Kohei Hayashi and Fumiaki Ito and Hidekazu Kakuno and Hideyo Kodama and Kanetada Nagamine and Kazuyuki Sato and Kotaro Satoh and Shin-Hong Kim and Atsuto Suzuki and Takayuki Sumiyoshi and Kazuki Takahashi and Yu Takahashi and Fumihiko Takasaki and Shuji Tanaka and Satoru Yamashita},
journal= {arXiv preprint arXiv:1902.01992},
year = {2019}
}
Comments
15 pages, 22 figures, accepted for publication in PTEP