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Local and integral disruption forces on the tokamak wall

机译：托卡马克墙上的本地和整体中断力量

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The disruption-induced forces on the tokamak wall are evaluated analytically within the standard large-aspect-ratio model that implies axisymmetry, circular plasma and wall, and absence of halo currents. Additionally, the ideal-wall reaction is assumed. The disruptions are modelled as rapid changes in the plasma pressure (thermal quench (TQ)) and net current (current quench (CQ)). The force distribution over the poloidal angle is found as a function of these inputs. The derived formulas allow comparison of the TQ- and CQ-produced forces calculated differently, with and without account of the poloidal current induced in the wall. The latter variant represents the inherent property of the codes treating the wall as a set of toroidal filaments. It is proved here that such a simplification leads to unacceptably large errors in the simulated forces for both TQs and CQs. It is also shown that the TQ part of the force must prevail over that due to CQ in the high-beta scenarios developed for JT-60SA and ITER.
机译：在标准的大展弦比模型中，对托卡马克壁上的破裂诱导力进行了分析评估，该模型暗示了轴对称性、圆形等离子体和壁以及没有晕电流。此外，还假设了理想的壁面反应。中断被建模为等离子体压力（热猝灭（TQ））和净电流（电流猝灭（CQ））的快速变化。在极向角上的力分布是这些输入的函数。导出的公式允许比较不同计算的TQ和CQ产生的力，考虑和不考虑壁中感应的极向电流。后一种变体代表了将墙视为一组环形细丝的代码的固有属性。本文证明，这种简化会导致TQs和CQs模拟力产生不可接受的大误差。还表明，在为JT-60SA和ITER开发的高beta方案中，部队的TQ部分必须优先于CQ部分。

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