Runaway Geneeration In Disruptions Of Plasmas In TFTR

Fredrickson, E. D.  Bell, M. G.  Taylor, G.  Medley, S. S.¹ 

[1] Princeton Plasma Physics Lab., Princeton, NJ (United States)

关键词: Disruptions;    Tokamaks;    TFTR;    Plasma Runaway;   

DOI  :  10.2172/1127228
RP-ID  :  PPPL--5010
PID  :  OSTI ID: 1127228

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

Many disruptions in the Tokamak Fusion Test Reactor (TFTR) [D. Meade and the TFTR Group, in Proceedings of the International Conference on Plasma Physics and Controlled Nuclear Fusion, Washington, DC, 1990 (International Atomic Energy Agency, Vienna, 1991), Vol. 1, pp. 9-24] produced populations of runaway electrons which carried a significant fraction of the original plasma current. In this paper, we describe experiments where, following a disruption of a low-beta, reversed shear plasma, currents of up to 1 MA carried mainly by runaway electrons were controlled and then ramped down to near zero using the ohmic transformer. In the longer lasting runaway plasmas, Parail-Pogutse instabilities were observed.