Numerical study on wave-induced beam ion prompt losses in DIII-D tokamak

Feng, Zhichen; Zhu, Jia; Fu, Guo -Yong; Heidbrink, W. W.; Van Zeeland, M. A.

doi:10.1063/1.5000073

Title: Numerical study on wave-induced beam ion prompt losses in DIII-D tokamak

Journal Article · Wed Aug 30 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5000073· OSTI ID:1398341

Feng, Zhichen ^[1]; Zhu, Jia ^[1];

^[2]; Heidbrink, W. W. ^[3]; Van Zeeland, M. A. ^[4]

Zhejiang Univ., Hangzhou (China)
Zhejiang Univ., Hangzhou (China); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Univ. of California, Irvine, CA (United States)
General Atomics, San Diego, CA (United States)

A numerical study is performed on the coherent beam ion prompt losses driven by Alfven eigenmodes (AEs) in DIII-D plasmas using realistic parameters and beam ion deposition profiles. The synthetic signal of a fast-ion loss detector (FILD) is calculated for a single AE mode. The first harmonic of the calculated FILD signal is linearly proportional to the AE amplitude with the same AE frequency in agreement with the experimental measurement. The calculated second harmonic is proportional to the square of the first harmonic for typical AE amplitudes. The coefficient of quadratic scaling is found to be sensitive to the AE mode width. The second part of this work considers the AE drive due to coherent prompt loss. As a result, it is shown that the loss-induced mode drive is much smaller than the previous estimate and can be ignored for mode stability.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Contributing Organization:: Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China; Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

Grant/Contract Number:: AC02-09CH11466; FC02-04ER54698

OSTI ID:: 1398341

Alternate ID(s):: OSTI ID: 1377684

Journal Information:: Physics of Plasmas, Vol. 24, Issue 8; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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References (17)

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