In this paper we present a method to compute spatial and time evolution of electromagnetic forces in magnetic confinement fusion devices based on a combination of signal analysis of magnetic measurements with a simple electromagnetic modelling. The method allows analyzing the whole plasma discharge including fast transient phenomena such as fast terminations or disruptions. It has been tested and verified on RFX-mod, an experiment equipped with a non-continuous toroidal passive stabilizing shell, but it can be applied to cases with continuous wall such as tokamak devices, as well. An experimental plasma discharge, with a fast termination phenomenon at the end of the flat-top phase, has been analyzed and the related forces have been computed by using two different sets of data: synthetic magnetic field measurements provided by ANSYS simulation and real experimental ones. The results are in good agreement in all the phases of the plasma discharge. Moreover, because of the very low-computational requirements, it is shown that the presented method can be used as a tool for real-time monitoring of the electromagnetic forces on the shell to be integrated in the protection system of the future RFX-mod2 experiment.

在本文中，我们提出了一种基于磁测量信号分析与简单电磁建模相结合的方法来计算磁约束聚变装置中电磁力的空间和时间演变。该方法允许分析整个等离子体放电，包括快速瞬态现象，例如快速终止或中断。它已经在 RFX-mod 上进行了测试和验证，这是一个配备非连续环形被动稳定壳的实验，但它也可以应用于具有连续壁的情况，​​例如托卡马克装置。已经分析了在平顶阶段结束时具有快速终止现象的实验等离子体放电，并使用两组不同的数据计算了相关力：ANSYS 仿真和真实实验提供的合成磁场测量。结果在等离子体放电的所有阶段都非常一致。此外，由于计算要求非常低，表明所提出的方法可以用作实时监测外壳上电磁力的工具，以集成到未来 RFX-mod2 实验的保护系统中.