Simulation Study of an Extended Divertor Leg for Heat Control in the SlimCS DEMO Reactor

被引：21

作者：

Hoshino, K. ^{[1
]}

Shimizu, K. ^{[2
]}

Asakura, N. ^{[1
]}

Takizuka, T. ^{[2
]}

Nakamura, M. ^{[1
]}

Tobita, K. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Rokkasho, Aomori 0393212, Japan

[2] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan

来源：

CONTRIBUTIONS TO PLASMA PHYSICS | 2012年 / 52卷 / 5-6期

基金：

日本学术振兴会;

关键词：

Divertor simulation; SlimCS DEMO reactor; SONIC code;

D O I：

10.1002/ctpp.201210048

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：

Power handling in the divertor is one of the most important issues for fusion tokamak reactor design. In this study, the effect of the divertor leg length on power handling in the SlimCS DEMO reactor is investigated for future divertor design. Simulation with the SONIC code suite shows enhancement of recycling in the outer divertor region due to effects of the long divertor leg and the deep V-shaped corner. As a result, the ion and electron temperature at the outer divertor significantly decreases. In addition, the peak of the Ar impurity radiation, which is located close to the outer divertor target in the standard divertor geometry, moves upstream. The former effect decreases the heat load to the outer divertor due to ion conduction and convection, while the latter reduces the heat load due to the impurity radiation. The peak of the total heat load on the outer divertor decreases by about 30 % ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

引用

页码：550 / 554

页数：5