Assessment of the DIVIMP 'onion-skin' model in the JET mark I divertor

被引:15
作者
Erents, SK
Breger, P
Davies, SJ
Elder, JD
Guo, HY
Horton, LD
Matthews, GF
Monk, RD
Stangeby, PC
Summers, DDR
机构
[1] JET JOINT UNDERTAKING,ABINGDON OX14 3EA,OXON,ENGLAND
[2] UNIV TORONTO,INST AEROSP STUDIES,DOWNSVIEW,ON M3H 5T6,CANADA
[3] UNIV QUEBEC,INRS ENERGIE & MAT,QUEBEC CITY,PQ,CANADA
关键词
JET; divertor plasma; 2D model; Monte Carlo simulation; transverse transport;
D O I
10.1016/S0022-3115(96)00542-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The DIVIMP-NIMBUS [1] 'Onion-Skin' model has been used to predict upstream plasma parameters using as input measurements by Langmuir probes in the divertor target tiles. Measurements of density and temperature (both T-i and T-e) across the SOL close to the stagnation point at the top of the torus have been made using a reciprocating probe carrying both Langmuir and retarding field analyzer (RFA) heads. In addition, a lithium beam diagnostic has been used to measure radial distributions of density upstream. Ohmic, L-mode and H-mode discharges have been studied, and good agreement with code predictions in the three cases has been found. The heat transport coefficient, chi(perpendicular to)(r), has been evaluated across the SOL, and is found to increase with increasing distance from the separatrix.
引用
收藏
页码:433 / 437
页数:5
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