SOLPS-ITER simulations of the TCV divertor upgrade

被引：39
|
作者：
Wensing, M. [1 ]
Duval, B. P. [1 ]
Fevrier, O. [1 ]
Fil, A. [2 ]
Galassi, D. [1 ]
Havlickova, E. [1 ]
Perek, A. [3 ]
Reimerdes, H. [1 ]
Theiler, C. [1 ]
Verhaegh, K. [1 ,2 ]
Wischmeier, M. [4 ]
机构：
[1] Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland
[2] Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England
[3] DIFFER DutchInst Fundamental Energy Res, De Zaale 20, NL-5612 AJ Eindhoven, Netherlands
[4] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2019年 / 61卷 / 08期
基金：
瑞士国家科学基金会;
关键词：
divertor physics; detachment; alternative divertor configurations; DETACHMENT;
D O I：
10.1088/1361-6587/ab2b1f
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：
The effect of the upcoming TCV divertor upgrade on the distribution of neutrals and the onset of detachment is studied using 2D transport code simulations. The divertor upgrade is centered around the installation of a gas baffle to form a divertor chamber of variable closure. SOLPS-ITER simulations predict that the baffle geometry selected to be installed in TCV in 2019 increases the divertor neutral density by a factor similar to 5 and the neutral compression by one order of magnitude in typical TCV single null, Ohmic heated scenarios (330 kW). The compression increases further with the addition of auxiliary heating systems (1.2 MW). Simulations show that volumetric power losses in the divertor increase giving access to deeper detachment for given upstream densities and heating power. Predictions for observations by various TCV diagnostics, including baratrons, divertor spectrometer and visible camera systems, are presented to guide the experimental verification of the efficiency of the divertor baffles.
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页数：10
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