0-D modeling of fast radiative shutdown of tokamak discharges following massive gas injection

被引:14
作者
Hollmann, E. M. [1 ]
Parks, P. B. [2 ]
Scott, H. A. [3 ]
机构
[1] Univ Calif San Diego, La Jolla, CA 92093 USA
[2] Gen Atom Co, San Diego, CA 92186 USA
[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
关键词
tokamak; disruption; simulation;
D O I
10.1002/ctpp.200810045
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
0-D modeling of fast radiative shutdowns of tokamak discharges following massive gas injection is presented. Realistic neutral deposition rates are used together with a 1-D diffusive model to estimate impurity deposition into the plasma. Non-coronal radiation rates including opacity are used, as are induced wall currents, wall impurity radiation, and neutral and neoclassical corrections to plasma resistivity. The 0-D modeling is found to reproduce the shutdown timescale and free electron density rise seen in DIII-D argon injection experiments well. Opacity, wall currents, and wall impurities can all have a significant (>10%) impact on simulated timescales. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:260 / 264
页数:5
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