Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
Volume 33, Issue 4
Displaying 1-3 of 3 articles from this issue
  • Koichi Suzuki
    1990 Volume 33 Issue 4 Pages 371-380
    Published: April 20, 1990
    Released on J-STAGE: September 29, 2009
    JOURNAL FREE ACCESS
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  • Norio OGIWARA, Masaki MAENO
    1990 Volume 33 Issue 4 Pages 381-386
    Published: April 20, 1990
    Released on J-STAGE: September 29, 2009
    JOURNAL FREE ACCESS
    A new gauge with a fast time response has been developed for measuring the vacuum pressure of a tokamak fusion device, JT-60. The pressure is measured during and after a hydrogen plasma discharge shot in order to investigate the mechanism of outgassing from the first wall, which is made of graphite. The evacuated gas quantity after a typical disruption is almost equal to or greater than the amount of gas input. After a typical plasma disruption, the amount of gas of 40 Pam3 is released within 50 ms. This is probably caused by the heat flux to the first wall due to both the plasma thermal and magnetic energies. It is observed that three-quarters of the gas released returns to the first wall. On the other hand, the evacuated quantity after normal plasma discharge is less than the gas input.
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  • Katsujiro ITOH, Hiroshi KOMURO, Kenji WARAGAI, Tsuneo ISHIGAKI
    1990 Volume 33 Issue 4 Pages 387-389
    Published: April 20, 1990
    Released on J-STAGE: January 28, 2010
    JOURNAL FREE ACCESS
    Download PDF (401K)
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