ITER用計測機器に対する放射線照射効果  [in Japanese] Irradiation Effects on Diagnostic Components for ITER  [in Japanese]

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Author(s)

Abstract

Irradiation tests on many diagnostic components have been carried out as a part of the R&D program of the ITER Engineering Design Activities (EDA). Five kinds of ITER round robin fibers were irradiated in JMTR and<SUP>60</SUP>Co γ-rays. Induced transmission loss of those fibers are much smaller than that of pure SiO<SUB>2</SUB> core fiber. Especially, KU-H2G from Russian Federation and F-doped fibers from Japan have rather good radiation hardness even in the visible range. Those fibers might be available in the diagnostic port of ITER. The transmissivity of KU-1 quartz, which is a candidate of the window material for UV and visible spectroscopy in ITER, was measured under the irradiation of 14 MeV neutrons and γ-rays in the UV range (200 - 400 nm). Significant transmission loss was observed in the wavelength range of 200-300 nm. The Mica substrate bolometer was irradiated in JMTR during three irradiation cycles. Total neutron fluence was about 1×10<SUP>24</SUP> n/m<SUP>2</SUP> which was equivalent to 0.1 dpa. Significant increase in the meander resistance was observed, which was causedby the nuclear transmutation of gold into mercury. The use of gold meanders might be problematic in ITER.

Journal

  • Journal of Plasma and Fusion Research

    Journal of Plasma and Fusion Research 78(5), 462-467, 2002-05-25

    The Japan Society of Plasma Science and Nuclear Fusion Research

References:  9

Codes

  • NII Article ID (NAID)
    110003827164
  • NII NACSIS-CAT ID (NCID)
    AN10401672
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    09187928
  • NDL Article ID
    6173156
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-8
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE  NDL-Digital 
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