SYMPOSIA PAPER Published: 01 January 2001
STP13672S

Development of In-Core Monitoring System using Optical Fiber for Advanced Fission Reactor

Source

A new kind of optical dosimetry such as the in-core power monitoring and gamma ray thermometer using radio luminescence and thermal radiation due to gamma ray in optical fibers was demonstrated. During heavy irradiation in the core region of JMTR fission reactor, optical fiber kept good transmission characteristics and radio luminescence and thermal radiation appeared in the infrared region. Intensities of radio luminescence and thermal radiation were found to be directly proportional to the reactor power. Also, temperatures could be estimated by thermal radiation of Planck's law. The optical measuring method using optical fiber could be used to compose simple and convenient monitoring system of power and temperature as a reactor dosimetry.

Author Information

Kakuta, T
Japan Atomic Energy Research Institute, Ibaraki, Japan
Ishihara, M
Japan Atomic Energy Research Institute, Ibaraki, Japan
Shikama, T
Institute for Material Research, Tohoku University, Ibaraki, Japan
Narui, M
Institute for Material Research, Tohoku University, Ibaraki, Japan
Sagawa, T
Japan Atomic Energy Research Institute, Ibaraki, Japan
Arai, T
Japan Atomic Energy Research Institute, Ibaraki, Japan
Hayashi, K
Japan Atomic Energy Research Institute, Ibaraki, Japan
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Details
Developed by Committee: E10
Pages: 797–802
DOI: 10.1520/STP13672S
ISBN-EB: 978-0-8031-5450-6
ISBN-13: 978-0-8031-2884-2