中国物理B ›› 2007, Vol. 16 ›› Issue (1): 200-206.doi: 10.1088/1009-1963/16/1/034

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

The first results of divertor discharge and supersonic molecular beam injection on the HL-2A tokamak

姚良骅, 袁保山, 冯北滨, 陈程远, 洪文玉, 李英量   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • 收稿日期:2006-12-06 修回日期:2006-03-08 出版日期:2007-02-01 发布日期:2007-02-01
  • 基金资助:
    Project supported by the National Science Foundation of China (Grant Nos 19775011, 10075016 and 10475024).

The first results of divertor discharge and supersonic molecular beam injection on the HL-2A tokamak

Yao Liang-Hua(姚良骅)†, Yuan Bau-Shan(袁保山), Feng Bei-Bin(冯北滨), Chen Cheng-Yuan(陈程远), Hong Wen-Yu(洪文玉), and Li Ying-Liang(李英量)   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:2006-12-06 Revised:2006-03-08 Online:2007-02-01 Published:2007-02-01
  • Supported by:
    Project supported by the National Science Foundation of China (Grant Nos 19775011, 10075016 and 10475024).

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摘要： HL-2A tokamak is the first tokamak with divertors in China. The plasma boundary and the position of the striking point on the target plates of the HL-2A closed divertor were simulated by the current filament code and they were in agreement with the diagnostic results in the divertor. Supersonic molecular beam injection (SMBI) system was first installed and tested on the HL-2A tokamak in 2004. In the present experiment low pressure SMBI fuelling on the HL-2A closed divertor was carried out. The experimental results indicate that the divertor was operated in the `linear regime' and during the period of SMB pulse injection into the HL-2A plasma the power density convected at the target plate surfaces was 0.4 times of that before or after the beam injection. It is a useful fuelling method for decreasing the heat load on the neutralizer plates of the divertor.

Abstract: HL-2A tokamak is the first tokamak with divertors in China. The plasma boundary and the position of the striking point on the target plates of the HL-2A closed divertor were simulated by the current filament code and they were in agreement with the diagnostic results in the divertor. Supersonic molecular beam injection (SMBI) system was first installed and tested on the HL-2A tokamak in 2004. In the present experiment low pressure SMBI fuelling on the HL-2A closed divertor was carried out. The experimental results indicate that the divertor was operated in the `linear regime' and during the period of SMB pulse injection into the HL-2A plasma the power density convected at the target plate surfaces was 0.4 times of that before or after the beam injection. It is a useful fuelling method for decreasing the heat load on the neutralizer plates of the divertor.

Key words: supersonic molecular beam injection (SMBI), HL-2A tokamak, closed divertor, simulation

中图分类号:  (Tokamaks, spherical tokamaks)

  • 52.55.Fa
52.40.Hf (Plasma-material interactions; boundary layer effects) 52.50.Gj (Plasma heating by particle beams) 52.55.Rk (Power exhaust; divertors) 52.70.Ds (Electric and magnetic measurements)