The first results of divertor discharge and supersonic molecular beam injection on the HL-2A tokamak |
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| Authors: | Yao Liang-Hu Yuan Bau-Shan Feng Bei-Bin Chen Cheng-Yuan Hong Wen-Yu and Li Ying-Liang |
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| Affiliation: | Southwestern Institute of Physics, Chengdu 610041, China |
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| 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. |
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| Keywords: | supersonic molecular beam injection (SMBI) HL-2A tokamak closed divertor simulation |
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