Near midplane scintillator-based fast ion loss detector on DIII-D

被引：24
作者：
Chen, X. [1 ]
Fisher, R. K. [2 ]
Pace, D. C. [2 ]
Garcia-Munoz, M. [3 ]
Chavez, J. A. [2 ]
Heidbrink, W. W. [1 ]
Van Zeeland, M. A. [2 ]
机构：
[1] Univ Calif Irvine, Irvine, CA 92717 USA
[2] Gen Atom Co, San Diego, CA 92186 USA
[3] EURATOM, Max Planck Inst Plasmaphys, D-8046 Garching, Germany
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 10期
关键词：
TFTR;
D O I：
10.1063/1.4732063
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new scintillator-based fast-ion loss detector (FILD) installed near the outer midplane of the plasma has been commissioned on DIII-D. This detector successfully measures coherent fast ion losses produced by fast-ion driven instabilities (<= 500 kHz). Combined with the first FILD at similar to 45 degrees below the outer midplane [R. K. Fisher, et al., Rev. Sci. Instrum. 81, 10D307 (2010)], the two-detector system measures poloidal variation of losses. The phase space sensitivity of the new detector (gyroradius r(L) similar to [1.5-8] cm and pitch angle alpha similar to [35 degrees-85 degrees]) is calibrated using neutral beam first orbit loss measurements. Since fast ion losses are localized poloidally, having two FILDs at different poloidal locations allows for the study of losses over a wider range of plasma shapes and types of loss orbits. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732063]
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