Full wave simulations of fast wave heating losses in the scrape-off layer of NSTX and NSTX-U

被引：49

作者：

Bertelli, N. ^{[1
]}

Jaeger, E. F. ^{[2
]}

Hosea, J. C. ^{[1
]}

Phillips, C. K. ^{[1
]}

Berry, L. ^{[3
]}

Gerhardt, S. P. ^{[1
]}

Green, D. ^{[3
]}

LeBlanc, B. ^{[1
]}

Perkins, R. J. ^{[1
]}

Ryan, P. M. ^{[3
]}

Taylor, G. ^{[1
]}

Valeo, E. J. ^{[1
]}

Wilson, J. R. ^{[1
]}

机构：

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

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

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

来源：

NUCLEAR FUSION | 2014年 / 54卷 / 08期

关键词：

fast wave; heating losses; scrape-off layer; DEVICE;

D O I：

10.1088/0029-5515/54/8/083004

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：

Full wave simulations of fusion plasmas show a direct correlation between the location of the fast-wave cut-off, radiofrequency (RF) field amplitude in the scrape-off layer (SOL) and the RF power losses in the SOL observed in the National Spherical Torus eXperiment (NSTX). In particular, the RF power losses in the SOL increase significantly when the launched waves transition from evanescent to propagating in that region. Subsequently, a large amplitude electric field occurs in the SOL, driving RF power losses when a proxy collisional loss term is added. A 3D reconstruction of absorbed power in the SOL is presented showing agreement with the RF experiments in NSTX. Loss predictions for the future experiment NSTX-Upgrade (NSTX-U) are also obtained and discussed.

引用

页数：6

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