Design of a retarding potential grid system for a neutral particle analyzer vol 85, 11D402, 2014

被引：0

作者：

Titus, J. B. ^{[1
]}

Anderson, J. K. ^{[2
]}

Reusch, J. A. ^{[2
]}

Mezonlin, E. D. ^{[1
]}

机构：

[1] Florida A&M Univ, Dept Phys, Tallahassee, FL 32310 USA

[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 11期

关键词：

12;

D O I：

10.1063/1.4891725

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The ion energy distribution in a magnetically confined plasma can be inferred from charge exchange neutral particles. On the Madison Symmetric Torus (MST), deuterium neutrals are measured by the Florida A&M University compact neutral particle analyzer (CNPA) and the advanced neutral particle analyzer (ANPA). The CNPA energy range covers the bulk deuterium ions to the beginning of the fast ion tail (0.34-5.2 keV) with high-energy resolution (25 channels) while the ANPA covers the vast majority of the fast ion tail distribution (similar to 10-45 keV) with low energy resolution (10 channels). Though the ANPA has provided insight into fast ion energization in MST plasma, more can be gained by increasing the energy resolution in that energy range. To utilize the energy resolution of the CNPA, fast ions can be retarded by an electric potential well, enabling their detection by the diagnostic. The ion energy distribution can be measured with arbitrary resolution by combining data from many similar MST discharges with different energy ranges on the CNPA, providing further insight into ion energization and fast ion dynamics on MST. (C) 2014 AIP Publishing LLC.

引用

页数：1