在弗拉斯卡蒂托卡马克升级装置中，通过利用电子回旋共振加热实现磁流体动力学模式稳定来避免等离子体破裂。

Disruption avoidance in the Frascati Tokamak Upgrade by means of magnetohydrodynamic mode stabilization using electron-cyclotron-resonance heating.

作者信息

Esposito B, Granucci G, Smeulders P, Nowak S, Martín-Solís J R, Gabellieri L

机构信息

Associazione Euratom-ENEA sulla Fusione, C.R. Frascati, C.P. 65, 00044-Frascati, Roma, Italy.

出版信息

Phys Rev Lett. 2008 Feb 1;100(4):045006. doi: 10.1103/PhysRevLett.100.045006.

DOI:10.1103/PhysRevLett.100.045006

PMID:18352292

Abstract

Disruption avoidance by stabilization of MHD modes through injection of ECRH at different radial locations is reported. Disruptions have been induced in the FTU (Frascati Tokamak Upgrade) deuterium plasmas by Mo injection or by exceeding the density limit (D gas puffing). ECRH is triggered when the V(loop) exceeds a preset threshold value. Coupling between MHD modes (m/n=3/2, 2/1, 3/1) occurs before disruption. Direct heating of one coupled mode is sufficient to avoid disruptions, while heating close to the mode leads to disruption delay. These results could be relevant for the International Thermonuclear Experimental Reactor tokamak operation.

摘要

报告了通过在不同径向位置注入电子回旋共振加热（ECRH）来稳定磁流体动力学（MHD）模式以避免破裂的情况。在FTU（弗拉斯卡蒂托卡马克升级装置）氘等离子体中，通过钼注入或超过密度极限（氘喷气）引发了破裂。当环电压（V(loop)）超过预设阈值时触发ECRH。在破裂之前，MHD模式（m/n = 3/2、2/1、3/1）之间会发生耦合。直接加热其中一个耦合模式足以避免破裂，而在模式附近加热会导致破裂延迟。这些结果可能与国际热核聚变实验反应堆托卡马克运行相关。