| Enhanced Plasma Performance by ICRF Boronization |
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| 作者姓名： | 万宝年 赵燕平 李建刚 宋梅 吴振伟 罗家融 李成富 王小明 |
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| 作者单位： | InstituteofPlasmaPhysics,ChineseAcademyofSciences,Hefei230031,China |
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| 基金项目： | This work was supported by National Natural Science Foundation of China Grant No.10175069. |
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| 摘 要： | Boronization with carborane(C2B10H12)by ICRF been applied routinely to the walls of HT-7 super-conducting tokamak for the reduction of impurity influx.especially carbon and oxygen.Significant suppression of metallic impurties and radiating power fraction are achieved.The imporved confinement for both particle and energy is observed in full range of operation parameters.Energy balance analysis shows that electron heat diffusion coefficient is strongly reduced.Measurements by Langmuir probes at the edge plasma show that poloidal velocity shear after boronization is changed to a profile to profile favoring to good confinement.The main emphasis of this paper is to describe effects of boronization on aspects of the enhanced plasma performance.
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| 关 键 词： | 等离子体 性能 ICRT硼化 |
Enhanced Plasma Performance by ICRF Boronization |
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| WAN Bao-nian ZHAO Yan-pin LI Jian-gangSONG Mei WU Zhen-wei LUO Jia-rongLI Cheng-fu WANG Xiao-mingInstitute of Plasma Physics,Chinese Academy of Sciences,Hefei ,China.Enhanced Plasma Performance by ICRF Boronization[J].Plasma Science & Technology,2002,4(4):1375-1382. |
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| Authors: | WAN Bao-nian ZHAO Yan-pin LI Jian-gangSONG Mei WU Zhen-wei LUO Jia-rongLI Cheng-fu WANG Xiao-mingInstitute of Plasma Physics Chinese Academy of Sciences Hefei China |
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| Affiliation: | WAN Bao-nian ZHAO Yan-pin LI Jian-gangSONG Mei WU Zhen-wei LUO Jia-rongLI Cheng-fu WANG Xiao-mingInstitute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China |
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| Abstract: | Boronization with carborane (C2B10H12) by ICRF has been applied routinely to the walls of HT-7 super-conducting tokamak for the reduction of impurity influx, especially carbon and oxygen. Significant suppression of metallic impurities and radiating power fraction are achieved. The improved confinement for both particle and energy is observed in full range of operation parameters. Energy balance analysis shows that electron heat diffusion coefficient is strongly reduced. Measurements by Langmuir probes at the edge plasma show that the poloidal velocity shear after boronization is changed to a profile favoring to good confinement. The main emphasis of this paper is to describe effects of boronization on aspects of the enhanced plasma performance. |
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| Keywords: | boronization ICRF plasma performance |
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