Validation of full-wave simulations for mode conversion of waves in the ion cyclotron range of frequencies with phase contrast imaging in Alcator C-Mod

被引：7

作者：

Tsujii, N. ^{[1
]}

Porkolab, M. ^{[2
]}

Bonoli, P. T. ^{[2
]}

Edlund, E. M. ^{[2
]}

Ennever, P. C. ^{[2
]}

Lin, Y. ^{[2
]}

Wright, J. C. ^{[2
]}

Wukitch, S. J. ^{[2
]}

Jaeger, E. F. ^{[3
]}

Green, D. L. ^{[4
]}

Harvey, R. W. ^{[5
]}

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, Chiba 2778561, Japan

[2] MIT, Plasma Sci & Fusion Ctr, Cambridge, MA 02139 USA

[3] XCEL Engn Inc, Oak Ridge, TN 37830 USA

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[5] CompX, Del Mar, CA 92014 USA

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 08期

关键词：

BERNSTEIN WAVES; CURRENT DRIVE;

D O I：

10.1063/1.4927912

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Mode conversion of fast waves in the ion cyclotron range of frequencies (ICRF) is known to result in current drive and flow drive under optimised conditions, which may be utilized to control plasma profiles and improve fusion plasma performance. To describe these processes accurately in a realistic toroidal geometry, numerical simulations are essential. Quantitative comparison of these simulations and the actual experimental measurements is important to validate their predictions and to evaluate their limitations. The phase contrast imaging (PCI) diagnostic has been used to directly detect the ICRF waves in the Alcator C-Mod tokamak. The measurements have been compared with full-wave simulations through a synthetic diagnostic technique. Recently, the frequency response of the PCI detector array on Alcator C-Mod was recalibrated, which greatly improved the comparison between the measurements and the simulations. In this study, mode converted waves for D-He-3 and D-H plasmas with various ion species compositions were re-analyzed with the new calibration. For the minority heating cases, self-consistent electric fields and a minority ion distribution function were simulated by iterating a full-wave code and a Fokker-Planck code. The simulated mode converted wave intensity was in quite reasonable agreement with the measurements close to the antenna, but discrepancies remain for comparison at larger distances. (C) 2015 AIP Publishing LLC.

引用

页数：9

共 3 条

[1] Measurements of ion cyclotron range of frequencies mode converted wave intensity with phase contrast imaging in Alcator C-Mod and comparison with full-wave simulations
Tsujii, N.
Porkolab, M.
Bonoli, P. T.
Lin, Y.
Wright, J. C.
Wukitch, S. J.
Jaeger, E. F.
Green, D. L.
Harvey, R. W.
PHYSICS OF PLASMAS, 2012, 19 (08)
[2] Wave-particle studies in the ion cyclotron and lower hybrid ranges of frequencies in Alcator C-Mod
Bonoli, P. T.
Parker, R.
Wukitch, S. J.
Lin, Y.
Porkolab, M.
Wright, J. C.
Edlund, E.
Graves, T.
Lin, L.
Liptac, J.
Parisot, A.
Schmidt, A. E.
Tang, V.
Beck, W.
Childs, R.
Grimes, M.
Gwinn, D.
Johnson, D.
Irby, J.
Kanojia, A.
Koert, P.
Marazita, S.
Marmar, E.
Terry, D.
Vieira, R.
Wallace, G.
Zaks, J.
FUSION SCIENCE AND TECHNOLOGY, 2007, 51 (03) : 401 - 436
[3] Full-wave model for the lower hybrid wave electric field vector with synthetic turbulence on Alcator C-Mod
Lau, C.
Martin, E. H.
Shiraiwa, S.
Wallace, G. M.
NUCLEAR FUSION, 2020, 60 (03)

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