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Simulation study on collisionless loss of runaway electrons by magnetic perturbations in a tokamak

机译:托卡马克中磁扰动失控电子无碰撞损失的模拟研究。

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摘要

Simulations have demonstrated that magnetic islands having the widths expected in major disruptions cause collisionless loss of relativistic electrons and that the resultant loss rate is high enough to avoid or to suppress runaway generation. This is because, for the magnetic fluctuations in the disruptions, the loss of electron confinement due to the breakdown of toroidal momentum conservation overwhelms the runaway electron confinement due to the phase averaging effect of relativistic electrons. The simulation results provide strong support for the JT--60U experiments on fast plasma shutdown avoiding runaway generation.
机译:模拟表明,在主要破坏中具有预期宽度的磁岛会引起相对论电子的无碰撞损失,并且所产生的损失率足够高,可以避免或抑制失控产生。这是因为,对于破坏中的磁波动,由于环形动量守恒的破坏而导致的电子约束的损失使相对论电子的相位平均效应导致的电子约束失控。仿真结果为JT--60U实验在快速关闭等离子体,避免失控产生方面提供了有力的支持。

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