Modulated active charge exchange fast ion diagnostic for the C-2 field-reversed configuration experiment

被引：6
|
作者：
Korepanov, S. [1 ]
Smirnov, A. [1 ]
Clary, R. [1 ]
Dettrick, S. [1 ]
Deichuli, P. [2 ]
Kondakov, A. [2 ]
Murakhtin, S. [2 ]
机构：
[1] Tri Alpha Energy Inc, Rancho Santa Margarita, CA 92688 USA
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 10期
关键词：
PLATE ELECTROSTATIC SPECTROGRAPH;
D O I：
10.1063/1.4732853
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A diagnostic technique for measuring the fast-ion energy distribution in a field-reversed configuration plasma was developed and tested on the C-2 experiment. A deuterium neutral beam modulated at 22 kHz is injected into the plasma, producing a localized charge-exchange target for the confined fast protons. The escaping fast neutrals are detected by a neutral particle analyzer. The target beam transverse size (similar to 15 cm) defines the spatial resolution of the method. The equivalent current density of the target beam is <= 0.15 A/cm(2), which corresponds to a neutral density (similar to 6 x 10(9) cm(-3)) that highly exceeds the background neutral density in the core of C-2. The deuterium fast-ions due to the target beam (E similar to 27 keV), are not confined in C-2 and thus make a negligible contribution to the measured signals. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732853]
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页数：3
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