摘要：结合中国环流器2A装置(HL-2A)中性束注入器真空系统的设计,介绍了一种可用于加速器等实验室的通用大抽速真空系统的主泵——钛泵的设计和计算,采用的单元式结构对于要求大抽速、高真空的工业和实验装置都具有重要意义和实用前景。

摘要：To match the large power long pulse neutral beam injectors for HL-2A Tokarnak,a circular magnetic multipole line-cusp ion source(namely a bucket ion source)has been *** arc chamber of this ion source is a water-cooled,stainless-steel cylinder 26cm in diameter,4mm thick,and 24cm *** far,many arc discharge experiments on this ion source have demonstrated that the plasma density has been 0.24A/cm^2,for 3 seconds duration, within 5%—7% plasma uniformity,and 3 seconds maximum *** discharge characteristics,such as the gas pressure dependence and filaments arrangements dependence have been studied experimentally and theoretically in this paper.

摘要：HL-2A装置NBI的设计参数为，注入气体为氢气、束能量60keY、束脉宽2s、两条束线切向注入、最终达到总的中性束注入功率4MW。目前，初步方案拟定为一条束线安装两个离子源，束线真空部分由一个主真空室和一个次真空室以及离子源真空室和漂移管道构成。

摘要：针对中性束注入等离子体加热过程中的高真空条件要求,借助于国际合作方式,我们为HL-2A装置中性束注入器设计了一种大吸附面积的高抽速钛泵系统。钛泵系统抽速设计值为30万L/s,由两台大泵和一台小泵组成,两台大钛泵分别置于注入器主真空室左右两侧,小钛泵置于注入器副真空室右侧。运行实验结果表明,钛泵完全满足HL-2A中性束注入实验的要求。本文主要介绍了钛泵的工程设计和实验运行结果,简要分析了HL-2A装置中性束加热系统高抽速钛泵的运行特点。

摘要：An ion source for HL-2A Neutral Beam Injection(NBI)was operated successfully in March 2007,in South- western Institute of Physics.A bucket source type and three-grid-system are used in this new ion source *** filament current of ll00A,filament voltage of 12V,arc current of 1050A,arc voltage of 120V,highest plasmas density of 2.5×10^(12)/cm^3,extracted ion beam density of 0.44A/cm^2,plasma density uniformity better than 5% in the area close to the first grid,duration of 2s,for this new source,have been *** conceptual design,mechanical design and experiment result for the ion source are presented briefly in this paper.