2019/02/06 by Hirofumi Fujii, Kazuhiko Hara, K. Hara +38
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Muon and positron interactions and applications #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ex #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1902.01992
15 pages, 22 figures, accepted for publication in PTEP
arxiv created 2019/02/06 · openalex publication_date 2019/02/06 · arxiv updated 2019/02/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
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.