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arXiv 2406.09703physics.plasm-ph
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存在逃逸电子的 ITER 中缓解型与垂直不稳定破裂的轴对称预测

Axisymmetric predictions for mitigated and vertically unstable disruptions in ITER with runaway electrons

V. Bandaru, M. Hoelzl, F. J. Artola, M. Lehnen, JOREK team

AI总结:

本文通过二维全局模拟研究了 ITER 中存在逃逸电子的缓解型与垂直不稳定破裂,探讨了热猝灭、材料注入和杂质冲刷等效应的影响,为逃逸电子缓解策略提供了重要见解。

摘要:

我们展示了存在逃逸电子时 ITER 中缓解型与垂直不稳定破裂的二维全局模拟。处于自由边界平衡中的拉长等离子体受到人工热猝灭和电流分布展平,随后发生一次或多次大量材料注入和 RE 雪崩。考虑了重大破裂场景以及向上和向下的垂直位移事件。结果为逃逸电子形成、热猝灭后电流分布、注入量和时机以及杂质冲刷对破裂整体演化及等离子体垂直运动的影响提供了重要见解。各种效应间的相互作用为潜在有利的逃逸电子缓解场景提供了空间。

英文摘要:

We present two-dimensional global simulations of mitigated and vertically unstable disruptions in ITER in the presence of runaway electrons. An elongated plasma in free-boundary equilibrium is subjected to an artificial thermal quench and current-profile flattening, followed by one or more massive material injections and RE avalanche. Scenarios of major disruptions as well as upward and downward vertical displacement events are considered. Results provide important insights into the effects of runaway electron formation, post thermal quench current-profile, injection quantities and timings, and impurity flushout on the overall evolution of disruption and the plasma vertical motion thereof. Interplay between the various effects offers scope for potentially beneficial runaway electron mitigation scenarios.

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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