氦气注入水平对EAST破裂减缓的影响
Effects of Helium massive gas injection level on disruption mitigation on EAST
摘要：
在这项研究中，NIMROD模拟研究了大量的氦气注入水平对EAST托卡马克上的感生破裂的影响。它表明在模拟中，两种不同的情况下，等离子体冷却（完全冷却和部分冷却）发生不同量的注入杂质。当杂质注入超过临界水平时，一次MHD活动就能引起完全的堆芯温度崩塌。对于低于临界水平的杂质注入，在完全热淬灭（TQ）之前发生一系列多个小中断。
英文摘要：
In this study, NIMROD simulations are performed to investigate the effects of massive helium gas injection level on the induced disruption on EAST tokamak. It is demonstrated in simulations that two different scenarios of plasma cooling (complete cooling and partial cooling) take place for different amounts of injected impurities. For the impurity injection above a critical level, a single MHD activity is able to induce a complete core temperature collapse. For impurity injection below the critical level, a series of multiple minor disruptions occur before the complete thermal quench (TQ).
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