Development of in-core monitoring system using optical fiber for advanced fission reactor

T. Kakuta, M. Ishihara, T. Shikama, M. Narui, T. Sagawa, T. Arai, K. Hayashi

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)797-802
Number of pages6
JournalASTM Special Technical Publication
Issue number1398
DOIs
Publication statusPublished - 2001 Jan 1
EventReactor Dosimetry: Radiation Metrology and Assesment - Osaka, Japan
Duration: 1999 Sep 121999 Sep 17

Keywords

  • Dosimetry
  • Gamma thermometer
  • Power monitor
  • Radio-luminescence
  • Thermal radiation

ASJC Scopus subject areas

  • Engineering(all)

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