PLASMA SURFACE INTERACTIONS IN THE ZT-40M REVERSED-FIELD PINCH

被引:15
作者
CAYTON, TE
DOWNING, JN
WEBER, PG
机构
[1] Los Alamos Natl Lab, Los Alamos, NM,, USA, Los Alamos Natl Lab, Los Alamos, NM, USA
关键词
NUCLEAR REACTORS; FUSION;
D O I
10.1016/0022-3115(87)90311-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Wall conditioning has been used in ZT-40M to significantly modify the plasma-wall interactions. Both discharge cleaning and carbonization have resulted in plasmas with lower Z//e//f//f, lower resistive anomaly factor and lower concentrations of metallic impurities. This sensitivity of the discharge characteristics to wall conditions clearly indicates the need for a wider range of conditioning options in the next generation RFPs. Both PDC and GDC will be employed at elevated vessel temperatures (150-300 degree C). If possible, the temperature of the plasma-interactive surfaces will be adjustable ( less than equivalent to 300 degree C) so that wall conditions can be varied over a wider range for both the cleaning operations and plasma discharges. Finally, the inherently high energy density of RFPs results in the potential for high heat fluxes on the first-wall or limiter structures, or both. It will be necessary to ensure that this heat flux is distributed appropriately on the plasma-interactive surfaces.
引用
收藏
页码:71 / 80
页数:10
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