Design of a D-alpha beam-ion profile diagnostic

被引:12
|
作者
Luo, Y
Heidbrink, WW
Burrell, KH
机构
[1] Univ Calif Irvine, Irvine, CA 92697 USA
[2] Gen Atom Co, San Diego, CA 92186 USA
来源
REVIEW OF SCIENTIFIC INSTRUMENTS | 2004年 / 75卷 / 10期
关键词
D O I
10.1063/1.1784533
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Injected neutral beams ionize to create a population of beam ions. As they orbit around the tokamak and pass through the heating beams, some beam ions re-neutralize and emit D-alpha light. The intensity of this emission is weak compared to the signals from the injected neutrals, the warm (halo) neutrals, and the edge recombination neutrals but, for a favorable viewing geometry, the emission is Doppler shifted away from these bright interfering signals. Preliminary data from the DIII-D tokamak show that signals from re-neutralized beam ions have already been detected. A three-channel prototype instrument consisting of a spectrometer, mask, camera lenses, and frame-transfer charge coupled device is under development for measurements of the spatial profile of the beam ions. (C) 2004 American Institute of Physics.
引用
收藏
页码:3468 / 3470
页数:3
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