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arXiv 2207.10000physics.plasm-ph
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ITER中氢弹丸与SPI注入逃逸电子束的拉格朗日粒子模拟

Lagrangian particle simulation of hydrogen pellets and SPI into runaway electron beam in ITER

Shaohua Yuan, Nizar Naitlho, Roman Samulyak, Bernard Pégourié, Eric Nardon, Eric Hollmann, Paul Parks, Michael Lehnen

AI总结:

本文利用含时弹丸消融代码模拟ITER中弹丸和SPI碎片进入逃逸电子束的消融过程,量化碰撞电离与横越场输运的影响,并发现消融云渗透深度约为50 cm。

摘要:

利用含时弹丸消融代码[R. Samulyak等人,Nucl Fusion, 61 (4), 046007 (2021)],对ITER中弹丸和碎裂弹丸注入(SPI)碎片进入逃逸电子束的消融过程进行了数值研究。该代码解析了弹丸碎片附近的详细消融物理以及消融云的大尺度膨胀。对单个碎片消融的研究量化了多种因素的影响,特别是逃逸电子的碰撞电离和横越场输运模型对消融等离子体动力学及其向逃逸束渗透的影响。使用不同数量弹丸碎片进行的SPI模拟研究了ITER中消融云的形成、演化及其大尺度动力学。发现消融云的渗透深度约为50 cm。

英文摘要:

Numerical studies of the ablation of pellets and shattered pellet injection (SPI) fragments into a runaway electron beam in ITER have been performed using a time-dependent pellet ablation code [R. Samulyak at el., Nucl Fusion, 61 (4), 046007 (2021)]. The code resolves detailed ablation physics near pellet fragments and large-scale expansion of ablated clouds. The study of a single fragment ablation quantifies the influence of various factors, in particular the impact ionization by runaway electrons and cross-field transport models, on the dynamics of ablated plasma and its penetration into the runaway beam. Simulations of SPI performed using different numbers of pellet fragments study the formation and evolution of ablation clouds and their large-scale dynamics in ITER. The penetration depth of ablation clouds is found to be of the order of 50 cm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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