文档介绍：逃逸电子缓解破裂的实验研究
卢洪伟周瑞杰胡立群凌必利
高能粒子行为研究小组
2009-12-07
研究意义
Disruptions+Runaway electrons
ITPA-IEA Joint experimental proposals for 2010;
MHD Stability Topical Group MDC-1(Disruption mitigation by massive gas injets).
The goal is to determine the optimal disruption mitigation schemes for ITER and other burning plasma devices.
The current emphasis is on injection of sufficient quantities of material to avoid large local heat loads, large halo currents, and runaway avalanche generation.
ASDEX-Upgrade, C-Mod, DIII-D, JET, MAST, TEXTOR, Tore Supra. TCV
研究的意义
Disruptions+Runaway electrons
ITPA-IEA Joint experimental proposals for 2010; MHD Stability Topical Group MDC-16(Runaway electron generation, confinement, and loss)
Avoidance or suppression of runaway electrons during disruptions remains a crucial topic for ITER.
Better understanding of their generation, confinement, and loss is urgently needed for specification of ITER’s disruption mitigation system.
Gas injection quantities for suppression of runaway avalanche generation need to be verified.
Exploration of alternative means of runaway suppression has shown encouraging initial results from TEXTOR, JT-60U, and DIII-D.
ASDEX-Upgrade, C-Mod, DIII-D, FTU, JET, JT-60U, TEXTOR, Tore Supra
Disruptions+Runaway electrons Active disruption avoidance(mitigation)
(1)研究破裂阶段的逃逸电子行为
(2)用逃逸电流缓解等离子体电流的下降率,缓解破裂对装置造成的损害(改变水平位移产生破裂)。
(3)充入惰性气体
[He; Ar(5%,10%,20%)+D2],寻求缓解破裂对装置造成的损害,减轻破裂下逃逸电子的抑制方法。
研究内容
国外相关研究的调研
Plasma sustained by RE in JET
(V. V. Plyusnin, NF 2006)
Plasma sustained by RE with LHCD on FTU (. Martin-Solis et al., PRL 2006)
HT-7上初步的实验结果
通过改变水平位移产生破裂。
本次提案的目的之一是:补充以前数据所缺的内容,主要是相应的能谱数据。
Resonant ic Perturbations
Electron Cyclotron Heating
Lower Hybrid Current Drive
massive gas injection (MGI has an advantage that it can also mitigate heat loads and halo currents)
The suppression of runaways :
Modelling of the current quench.
(a)* 1021 atom of argen
(b)* 1021 atom of argen
Experiments in TE