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TOKES simulations of mitigated disruption thermal quenches in ITER
Fusion Engineering and Design ( IF 1.9 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.fusengdes.2020.111976
S. Pestchanyi , M. Lehnen , R.A. Pitts , G. Saibene

Abstract TOKES simulations of mixed Ne/D2 pellet injection through 1 equatorial launcher into an ITER discharge of 280 MJ thermal plasma energy was carried out. Two kinds of pellets were simulated: ‘large’, containing 1.1∙1024 D2 molecules and ‘small’ with 2.6∙1023 D2 molecules, both with various amount of Ne and correspondingly lower quantities of D to preserve the pellet size. It was found that the physics of the core energy radiation by the mixed pellet is different from that of the pure Ne pellet. In case of the mixed pellet injection, bremsstrahlung and recombination radiation make a significant contribution to the core cooling along with the Ne line radiation, the latter being the only mechanism for pure Ne pellet injection. The minimum Ne amount in the mixed pellet, which radiates more than 90 % of the core plasma energy (the threshold) has been found to be 1∙1020 Ne atoms for the large pellet and 2∙1021 atoms for the small one.

中文翻译:

ITER 中减轻的中断热猝灭的 TOKES 模拟

摘要 对混合 Ne/D2 弹丸通过 1 个赤道发射器注入 280 MJ 热等离子体能量的 ITER 放电进行了 TOKES 模拟。模拟了两种颗粒:“大”颗粒,包含 1.1∙1024 个 D2 分子和“小”颗粒,包含 2.6∙1023 个 D2 分子,均具有不同数量的 Ne 和相应较低数量的 D,以保持颗粒尺寸。发现混合弹丸的核心能量辐射物理特性与纯氖弹丸不同。在混合颗粒注入的情况下,韧致辐射和复合辐射与 Ne 线辐射一起对核心冷却做出了重大贡献,后者是纯 Ne 颗粒注入的唯一机制。混合颗粒中的最小 Ne 量,
更新日期:2020-12-01
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