Design of solid state neutral particle analyzer array for National Spherical Torus Experiment-Upgrade

被引：5
|
作者：
Liu, D. [1 ]
Heidbrink, W. W. [1 ]
Tritz, K. [2 ]
Zhu, Y. B. [1 ]
Roquemore, A. L. [3 ]
Medley, S. S. [3 ]
机构：
[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[3] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 11期
关键词：
NATURAL DIAMOND DETECTOR;
D O I：
10.1063/1.4889913
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new compact, multi-channel Solid State Neutral Particle Analyzer (SSNPA) diagnostic based on silicon photodiode array has been designed and is being fabricated for the National Spherical Torus Experiment-Upgrade (NSTX-U). The SSNPA system utilizes a set of vertically stacked photodiode arrays in current mode viewing the same plasma region with different filter thickness to obtain fast temporal resolution (similar to 120 kHz bandwidth) and coarse energy information in three bands of >25 keV, >45 keV, and >65 keV. The SSNPA system consists of 15 radial sightlines that intersect existing on-axis neutral beams at major radii between 90 and 130 cm, 15 tangential sightlines that intersect new off-axis neutral beams at major radii between 120 and 145 cm. These two subsystems aim at separating the response of passing and trapped fast ions. In addition, one photodiode array whose viewing area does not intersect any neutral beams is used to monitor passive signals produced by fast ions that charge exchange with background neutrals. (C) 2014 AIP Publishing LLC.
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页数：4
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