用于实验先进超导托卡马克中性束注入器的兆瓦级热阴极桶型离子源的电弧放电调节
Arc discharge regulation of a megawatt hot cathode bucket ion source for the experimental advanced superconducting tokamak neutral beam injector.
作者信息
Xie Yahong, Hu Chundong, Liu Sheng, Jiang Caichao, Li Jun, Liang Lizhen
机构信息
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China.
出版信息
Rev Sci Instrum. 2012 Jan;83(1):013301. doi: 10.1063/1.3676655.
Arc discharge of a hot cathode bucket ion source tends to be unstable what attributes to the filament self-heating and energetic electrons backstreaming from the accelerator. A regulation method, which based on the ion density measurement by a Langmuir probe, is employed for stable arc discharge operation and long pulse ion beam generation. Long pulse arc discharge of 100 s is obtained based on this regulation method of arc power. It establishes a foundation for the long pulse arc discharge of a megawatt ion source, which will be utilized a high power neutral beam injection device.
热阴极桶型离子源的电弧放电往往不稳定，这归因于灯丝的自热以及从加速器反向回流的高能电子。一种基于朗缪尔探针测量离子密度的调节方法被用于稳定电弧放电操作和产生长脉冲离子束。基于这种电弧功率调节方法，实现了100秒的长脉冲电弧放电。这为兆瓦级离子源的长脉冲电弧放电奠定了基础，该离子源将应用于高功率中性束注入装置。
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