Tangential CO_2 Laser Interferometer for Large Tokamaks

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Author(s)

Abstract

A CO_2 laser interferometer system has been developed in JT-60U. The system has a toroidally tangential chord for electron density measurement on large tokamaks. There are four major topics as follows; (1) the investigation of conditions for the tangential interferometry in large tokamaks, (2) the development of a CO_2 (10.6 μm)/IR-HeNe (3.39 μm) laser interferometer, (3) the development of a dual CO_2 laser interferometer with a wavelength combination of CO_2 (10.6 μm)/CO_2 (9.27 μm), and (4) the development of a very high resolution phase comparator which is designed to have a phase resolution of 2π/12,800 rad for 2 MHz Signals. The results achieved show that the novel dual CO_2 System is feasible for not only JT-60U but also future large devices like ITER.

Journal

  • Journal of plasma and fusion research

    Journal of plasma and fusion research 73(8), 870-891, 1997-08-25

    プラズマ・核融合学会

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Codes

  • NII Article ID (NAID)
    110003826925
  • NII NACSIS-CAT ID (NCID)
    AN10401672
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09187928
  • NDL Article ID
    4283235
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-8
  • Data Source
    CJP  CJPref  NDL  NII-ELS  NDL-Digital 
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