For disruptions without mitigation, a large amount of thermal energy and poloidal magnetic energy will be dissipated inside the vacuum vessel (VV). A slow current quench may be accompanied by a large halo current, while a fast current quench often causes large eddy current, which will result in electromagnetic force. At the same time, fast current quench will induce strong toroidal electric field, which will result in a large fraction of runaway current and the hitting of runaway beam on first wall. The disruption mitigation is essential for large scale tokamak. The existing methods to mitigate disruptions, such as massive gas injection and resonant magnetic perturbations, are aimed at increasing the runaway generation threshold or the lose rate of runaway electrons. It may not work for ITER with I_p = 15 MA operation. The root of runaway generation is the large toroidal electric field induced by fast current quench and the large avalanche factor with high plasma current. The reduction of toroidal electric field is favor for the runaway suppression. The magnetic energy transfer (MET) based on electromagnetic coupling for disruption mitigation has been proposed on J-TEXT. It has the advantage of transferring the magnetic energy to outside of vessel by the electromagnetic coupling. It accelerates the current quench (CQ) rate and reduces the toroidal electric field at the same time. The runaway current has been suppressed by the MET system on J-TEXT. The experimental results show that the MET can reduce the energy dissipated in the VV by 20 % through transferring of energy to outside of VV. The MET can increase the CQ rate about 50.7 % and decrease the loop voltage about 35.3 %. The MET provides a new idea to transfer the magnetic energy and to suppress runaway current for disruption mitigation in future devices.

为了在不缓解的情况下进行破坏，将在真空容器（VV）内耗散大量的热能和多态磁能。缓慢的电流猝灭可能会伴随着较大的光晕电流，而快速的电流猝灭通常会引起大的涡流，这将导致电磁力。同时，快速的电流猝灭将感应出强的环形电场，这将导致很大一部分失控电流和失控光束击中第一壁。缓解中断对于大规模托卡马克至关重要。减轻干扰的现有方法（例如大量气体注入和共振磁扰动）旨在提高失控产生阈值或失控电子的损失率。I _p对ITER可能不起作用= 15 MA操作。失控产生的根源是快速电流淬灭引起的大环形电场和高等离子体电流下的大雪崩系数。环形电场的减小有利于抑制失控。在J-TEXT上已经提出了基于电磁耦合的磁能传递（MET），用于缓解干扰。它具有通过电磁耦合将磁能传递到容器外部的优点。它加快了电流猝灭（CQ）速率并同时减小了环形电场。J-TEXT上的MET系统抑制了失控电流。实验结果表明，通过将能量转移到VV外部，MET可以将VV中消耗的能量减少20％。MET可以将CQ速率提高大约50。7％并将回路电压降低约35.3％。MET提供了一种新的思想，即转移磁能并抑制失控电流，以减轻未来设备中的干扰。