Simulation Study of an Extended Divertor Leg for Heat Control in the SlimCS DEMO Reactor
Simulation Study of an Extended Divertor Leg for Heat Control in the SlimCS DEMO Reactor
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DOI：
10.1002/ctpp.201210048
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发表时间：
2012-06
影响因子：
1.6
通讯作者：
K. Hoshino;K. Shimizu;N. Asakura;T. Takizuka;M. Nakamura;K. Tobita
中科院分区：
文献类型：
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作者：
K. Hoshino;K. Shimizu;N. Asakura;T. Takizuka;M. Nakamura;K. Tobita
偏滤器的功率处理是聚变托卡马克堆设计中的重要问题之一。在这项研究中，偏滤器腿的长度对功率处理的SlimCS DEMO反应堆的影响进行了研究，为未来的偏滤器设计。使用SONIC代码套件进行的模拟显示，由于长偏滤器腿和深V形拐角的影响，外偏滤器区域的再循环增强。结果，外偏滤器处的离子和电子温度显著降低。此外，Ar杂质辐射的峰值，这是位于靠近外偏滤器目标在标准偏滤器的几何形状，移动上游。前一种效应降低了由于离子传导和对流而导致的外偏滤器的热负荷，而后一种效应降低了由于杂质辐射而导致的热负荷。外偏滤器上的总热负荷峰值降低约30%（© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
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 % (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)