Modeling the response of a fast ion loss detector using orbit tracing techniques in a neutral beam prompt-loss study on the DIII-D tokamak

被引：17

作者：

Pace, D. C. ^{[1
]}

Fisher, R. K. ^{[2
]}

Garcia-Munoz, M. ^{[3
]}

Darrow, D. S. ^{[4
]}

Heidbrink, W. W. ^{[1
]}

Muscatello, C. M. ^{[1
]}

Nazikian, R. ^{[4
]}

Van Zeeland, M. A. ^{[2
]}

Zhu, Y. B. ^{[1
]}

机构：

[1] Univ Calif Irvine, Irvine, CA 92697 USA

[2] Gen Atom Co, San Diego, CA 92186 USA

[3] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[4] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2010年 / 81卷 / 10期

关键词：

FUSION PRODUCTS; PARTICLES;

D O I：

10.1063/1.3478996

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A numerical model describing the expected measurements of neutral beam prompt-losses by a newly commissioned fast ion loss detector (FILD) in DIII-D is presented. This model incorporates the well understood neutral beam deposition profiles from all eight DIII-D beamlines to construct a prompt-loss source distribution. The full range of detectable ion orbit phase space available to the FILD is used to calculate ion trajectories that overlap with neutral beam injection footprints. Weight functions are applied to account for the level of overlap between these detectable orbits and the spatial and velocity (pitch) properties of ionized beam neutrals. An experimental comparison is performed by firing each neutral beam individually in the presence of a ramping plasma current. Fast ion losses determined from the model are in agreement with measured losses. (C) 2010 American Institute of Physics. [doi:10.1063/1.3478996]

引用

页数：5

共 17 条

[1] LOSS OF ENERGETIC BEAM IONS DURING TAE INSTABILITIES [J].