论文标题
拉格朗日粒子模拟氢气和SPI和iTer中的undaway电子束
Lagrangian particle simulation of hydrogen pellets and SPI into runaway electron beam in ITER
论文作者
论文摘要
已经使用时间依赖性的颗粒消融代码对迭代中的颗粒和破碎的颗粒注射（SPI）片段进行消融的数值研究[R. R. Samulyak在El。，Nucl Fusion，61（4），046007（2021）]。该代码解决了颗粒碎片附近的详细消融物理，并大规模扩展了消融云。对单个片段消融的研究量化了各种因素的影响，特别是逃亡电子和跨场传输模型的影响电离，对消融等离子体的动力学及其渗透到失控的光束中。使用不同数量的颗粒片段进行的SPI的模拟研究了消融云的形成和演化及其在ITER中的大规模动力学。发现消融云的穿透深度为50厘米。
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.
