Article
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
Author/s | Pace, D. C.
Fisher, R. K. García Muñoz, Manuel Darrow, D. S. Heidbrink, W. W. Muscatello, C. M. Zeeland, M. A. van Zhu, Y. B. |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2010 |
Deposit Date | 2020-09-03 |
Published in |
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Abstract | A numerical model describing the expected measurements of neutral beam prompt-losses by anewly commissioned fast ion loss detector FILD in DIII-D is presented. This model incorporatesthe well understood neutral beam ... A numerical model describing the expected measurements of neutral beam prompt-losses by anewly commissioned fast ion loss detector FILD in DIII-D is presented. This model incorporatesthe well understood neutral beam deposition profiles from all eight DIII-D beamlines to construct aprompt-loss source distribution. The full range of detectable ion orbit phase space available to theFILD is used to calculate ion trajectories that overlap with neutral beam injection footprints. Weightfunctions are applied to account for the level of overlap between these detectable orbits and thespatial and velocity pitch properties of ionized beam neutrals. An experimental comparison isperformed 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.© 2010American Institute of Physics. |
Project ID. | SC-G903402
DE-AC02-09CH11466 DE-FC02-04ER54698 |
Citation | Pace, D.C., Fisher, R.K., García Muñoz, M., Darrow, D.S., Heidbrink, W.W., Muscatello, C.M.,...,Zhu, Y.B. (2010). 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. Review of Scientific Instruments, 81 (10), 10D305-1-10D305-5. |
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