Fabrication of negative‐ion‐based neutral beam injector for large helical devices
Fabrication of negative‐ion‐based neutral beam injector for large helical devices
复制标题
用于大型螺旋装置的负离子中性束注入器的制造
DOI：
10.1063/1.51266
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
T. Kuroda
中科院分区：
文献类型：
--
作者：
O. Kaneko;S. Murakami;Y. Oka;M. Osakabe;Y. Takeiri;K. Tsumori;R. Akiyama;E. Asano;T. Kawamoto;T. Kuroda
用于大型螺旋装置（LHD）的15兆瓦、10秒负离子基中性束注入系统已经开始制造。该系统由两条相切的光束线组成。每条束流线有两个离子源，设计用于以180 keV的束流能量输送40 A的负氢离子。束线有两个真空室和一个长3.5米的气体中和器。第一室用作离子源的气体膨胀室，其气体压力被控制以保持中和的最佳线密度。所述第二腔室包括用于处理残留离子的磁弯曲系统。本设计是基于我们的高密度负氢离子产生、高功率光束提取和低光束发散的研究结果。该系统将于一九九七年开始调试，并计划于一九九八年投入运作。
Fabrication of a 15 MW, 10 sec. negative‐ion‐based neutral beam injection system has been started for Large Helical Device (LHD). The system is composed of two tangential beam lines. Each beam line has two ion sources which are designed to deliver 40 A of negative hydrogen ions at the beam energy of 180 keV. The beam line has two vacuum chambers and a long gas neutralizer of 3.5 m between them. The first chamber is used as a gas expansion chamber of ion sources, and its gas pressure is controlled to keep the optimum line density for neutralization. The second chamber includes a magnetic bending system to deal with residual ions. The design is based on the results of our RD the high density negative hydrogen ion production, high power beam extraction, and low beam divergence. The commissioning of the system will start in 1997, and the operation is scheduled in 1998.