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Development of an easier method for measuring thermal neutron flux in PET cyclotron

Research Project

Project/Area Number 15K19788
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionOsaka University

Principal Investigator

Horitsugi Genki  大阪大学, 医学部附属病院, 特任研究員(常勤) (70646231)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsサイクロトロン / 中性子 / 放射化 / 熱中性子
Outline of Final Research Achievements

The purpose of this study was to evaluate the thermal neutron flux using three spectrometers (HP-Ge detector, CdZnTe detector and CsI detector) and to develop an easier method for evaluation of thermal neutron. The gold foil activation method was used for measurement of the thermal neutron flux.
As the result, the thermal neutron fluxes in the self-shield measured using three spectrometers were 2.58×106±1.75×105 (HP-Ge detector), 2.19×106±2.72×105 (CdZnTe detector) and 2.55×106±1.51×105 (CsI detector) /cm2/s, respectively. No significant difference was observed in measuring thermal neutron flux among three spectrometers. It is easier to measure the thermal neutron flux using CdZnTe detector or CsI detector than using HP-Ge detector.
Thermal neutron fluxes in wall surface of cyclotron room measured by CdZnTe detector and CsI detector were 3.08×105±1.84×105 and 3.30×105±1.98×105 /cm2/s, respectively.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (1 results)

All 2016

All Presentation (1 results)

  • [Presentation] Evaluation of thermal neutron flux in the cyclotron room using three spectrometers.2016

    • Author(s)
      Genki Horitsugi
    • Organizer
      第56回日本核医学会学術総会
    • Place of Presentation
      名古屋
    • Year and Date
      2016-11-03
    • Related Report
      2016 Annual Research Report

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Published: 2015-04-16   Modified: 2018-03-22  

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