中国物理B ›› 2006, Vol. 15 ›› Issue (9): 2053-2057.doi: 10.1088/1009-1963/15/9/027

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Disruption mitigation using laser ablation of high-Z impurities in HL-1M tokamak

郑永真, 冯兴亚, 郭干城, 徐德明, 郑银甲   

  1. Southwestern Institute of Physics, Chengdu 610041,China
  • 收稿日期:2005-12-05 修回日期:2006-05-15 出版日期:2006-09-20 发布日期:2006-09-20
  • 基金资助:
    Project supported by IAEA International Science Foundation (Grant No IS 105123).

Disruption mitigation using laser ablation of high-Z impurities in HL-1M tokamak

Zheng Yong-Zhen(郑永真)†, Feng Xing-Ya(冯兴亚), Guo Gan-Cheng(郭干城), Xu De-Ming(徐德明), and Zheng Yin-Jia(郑银甲)   

  1. Southwestern Institute of Physics, Chengdu 610041,China
  • Received:2005-12-05 Revised:2006-05-15 Online:2006-09-20 Published:2006-09-20
  • Supported by:
    Project supported by IAEA International Science Foundation (Grant No IS 105123).

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摘要： A preliminary experiment triggering a plasma current quench by laser ablation of high-Z impurities has been performed in the HL-1M tokamak. The injection of impurities with higher electric charges into tokamak plasmas can increase the radiation cooling of the plasma. Resistive, highly radiating plasma formed prior to the thermal quench can dissipate both the thermal and magnetic energies, which is possibly a simple and potential approach to reducing significantly the plasma thermal energy and magnetic energy before a disruption thereby a safe plasma termination is obtained.

关键词: high-Z impurities, disruption, safe plasma termination, laser ablation

Abstract: A preliminary experiment triggering a plasma current quench by laser ablation of high-Z impurities has been performed in the HL-1M tokamak. The injection of impurities with higher electric charges into tokamak plasmas can increase the radiation cooling of the plasma. Resistive, highly radiating plasma formed prior to the thermal quench can dissipate both the thermal and magnetic energies, which is possibly a simple and potential approach to reducing significantly the plasma thermal energy and magnetic energy before a disruption thereby a safe plasma termination is obtained.

Key words: high-Z impurities, disruption, safe plasma termination, laser ablation

中图分类号:  (Electromagnetic (nonlaser) radiation interactions with plasma)

  • 52.40.Db
84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.)) 52.25.-b (Plasma properties) 52.65.-y (Plasma simulation)