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.
Received: 06 December 2006
Revised: 08 March 2006
Accepted manuscript online:
Fund: Project supported by
the National
Science Foundation of China (Grant Nos 19775011, 10075016 and 10475024).
Cite this article:
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) The first results of divertor discharge and supersonic molecular beam injection on the HL-2A tokamak 2007 Chinese Physics 16 200
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