Confinement of Alpha Particles in a Low-Aspect-Ratio Tokamak Reactor

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Abstract

Studies on the loss of fusion produced alpha particles enhanced by toroidal field (TF) ripple in a low-aspect-ratio tokamak reactor (VECTOR) have been made by using an orbit-following Monte-Carlo code. The ripple loss is strongly reduced as the aspect ratio becomes low. Consequently, alpha particles are well confined in VECTOR. In a low-aspect-ratio system, the dependence of the ripple loss on the number of TF coils is very weak, if the edge field ripple is kept constant. Thanks to the good confinement of alphas in a low-aspect-ratio system, the number of TF coils can be reduced to about 6, one half of the original VECTOR, by installing cooling systems near the outer edge of plasma and making allowances for about 30% increase in the bore diameter of TF coils.

Journal

  • IEEJ Transactions on Fundamentals and Materials

    IEEJ Transactions on Fundamentals and Materials 125(11), 938-942, 2005

    The Institute of Electrical Engineers of Japan

Cited by:  1

Codes

  • NII Article ID (NAID)
    130000085482
  • NII NACSIS-CAT ID (NCID)
    AN10136312
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0385-4205
  • NDL Article ID
    7691173
  • NDL Source Classification
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL Call No.
    Z16-793
  • Data Source
    CJPref  NDL  J-STAGE 
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