论文标题
DIII-D中的锁定模式中断，并应用于ITER
Locked mode disruptions in DIII-D and application to ITER
论文作者
论文摘要
在Tokamaks中，破坏是一个严重的问题，其中热能和磁能限制丢失了。本文使用DIII-D实验，理论和仿真中的数据来证明电阻壁撕裂模式（RWTM）在典型的锁定模式下产生热淬灭（TQ）。线性RWTM分散关系的分析显示了生长速率的参数依赖性，尤其是在电阻壁时间上。锁定模式平衡的线性模拟表明，它在电阻壁上不稳定，并且具有理想的导电墙稳定。非线性模拟表明，RWTM生长到足够的幅度以引起完整的热淬火。 RWTM增长时间与热淬火时间成正比。非线性饱和的RWTM磁扰动振幅与实验测量相符。开始条件是Q = 2有理表面足够接近电阻壁。总体而言，这将RWTM识别为TQ的原因。在ITER中，与当今的实验相比，RWTM将产生较长的TQ时间。迭代的破坏可能比以前预测的要高得多。
Disruptions are a serious problem in tokamaks, in which thermal and magnetic energy confinement is lost. This paper uses data from the DIII-D experiment, theory, and simulations to demonstrate that resistive wall tearing modes (RWTM) produce the thermal quench (TQ) in a typical locked mode shot. Analysis of the linear RWTM dispersion relation shows the parameter dependence of the growth rate, particularly on the resistive wall time. Linear simulations of the locked mode equilibrium show that it is unstable with a resistive wall, and stable with an ideally conducting wall. Nonlinear simulations demonstrate that the RWTM grows to sufficient amplitude to cause a complete thermal quench. The RWTM growth time is proportional to the thermal quench time. The nonlinearly saturated RWTM magnetic perturbation amplitude agrees with experimental measurements. The onset condition is that the q = 2 rational surface is sufficiently close to the resistive wall. Collectively, this identifies the RWTM as the cause of the TQ. In ITER, RWTMs will produce long TQ times compared to present-day experiments. ITER disruptions may be significantly more benign than previously predicted.
