Quantitative comparison of experimental impurity transport with nonlinear gyrokinetic simulation in an Alcator C-Mod L-mode plasma

被引：64

作者：

Howard, N. T. ^{[1
]}

Greenwald, M. ^{[1
]}

Mikkelsen, D. R. ^{[2
]}

Reinke, M. L. ^{[1
]}

White, A. E. ^{[1
]}

Ernst, D. ^{[1
]}

Podpaly, Y. ^{[1
]}

Candy, J. ^{[3
]}

机构：

[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

[2] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA

[3] Gen Atom Co, San Diego, CA 92121 USA

来源：

NUCLEAR FUSION | 2012年 / 52卷 / 06期

关键词：

ION TEMPERATURE;

D O I：

10.1088/0029-5515/52/6/063002

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：

Nonlinear gyrokinetic simulations of impurity transport are compared to experimental impurity transport for the first time. The GYRO code (Candy and Waltz 2003 J. Comput. Phys. 186 545) was used to perform global, nonlinear gyrokinetic simulations of impurity transport for a standard Alcator C-Mod, L-mode discharge. The laser blow-off technique was combined with soft x-ray measurements of a single charge state of calcium to provide time-evolving profiles of this non-intrinsic, non-recycling impurity over a radial range of 0.0 <= r/a <= 0.6. Experimental transport coefficient profiles and their uncertainties were extracted from the measurements using the impurity transport code STRAHL and rigorous Monte Carlo error analysis. To best assess the agreement of gyrokinetic simulations with the experimental profiles, the sensitivity of the GYRO predicted impurity transport to a wide range of turbulence-relevant plasma parameters was investigated. A direct comparison of nonlinear gyrokinetic simulation and experiment is presented with an in depth discussion of error sources and a new data analysis methodology.

引用

页数：12

共 32 条

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