HT-7超导托卡马克装置硼化实验研究

Experimental Studies of Boronization in HT-7 Superconducting Tokamak

描述了一种无毒无爆炸的固态硼 (C2 B10 H12 )在HT 7超导托卡马克装置上进行的硼化实验 ,结果表明 :杂质成分显著降低 ,CO ,H2 O及碳化合物得到了有效抑制 ,Zeff从 4～ 5下降到约 1 5,杂质及工作气体再循环也明显减少 ,硼化为LHCD辅助加热提供了良好的壁条件。实验中对发现的问题及现象进行了探讨 ,提出了改进和完善的办法。

Boron coating was deposited on the inner walls of HT 7 superconducting Tokamak with carborane mixture (C 2B 10 H 12 ) glow discharge technique.Our preliminary results showed that the residue impurities,especially carbon monoxide,water vapor and hydrocarbons,were considerably decreased,and that Z eff impurities decreases from 4～5 before boronization to about 1 5 in plasma discharge.Boronization markedly reduces the recycling of both impurity gases and the operating gases and provides better wall condition for LHCD experiments.Some technical problems and their possible solutions in boronization were also discussed.