The effect of divertor baffling on Alcator C-Mod discharges

被引：30
|
作者：
Pitcher, CS [1 ]
Boswell, CJ [1 ]
Goetz, JA [1 ]
LaBombard, B [1 ]
Lipschultz, B [1 ]
Rice, JE [1 ]
Terry, JL [1 ]
机构：
[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
来源：
PHYSICS OF PLASMAS | 2000年 / 7卷 / 05期
关键词：
D O I：
10.1063/1.874013
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effect of divertor baffling on Alcator C-Mod [Hutchinson et al., Phys. Plasmas 1, 1511 (1994)] discharges has been investigated using a novel divertor bypass. The bypass allows the in situ variation of the mechanical conductance from the divertor plenum to the main chamber between or even during discharges. The results indicate a strong dependence on baffling for the compression of deuterium and recycling impurity gases in the divertor plenum in a variety of C-Mod discharges, indicating that tight baffling would be desirable in a future tokamak reactor. There is no apparent effect of the divertor baffling for the Ohmic, L-mode and EDA (Enhanced D-alpha) H-mode discharges in this study on main chamber neutral particle populations, scrape-off-layer flows, nonrecycling impurity screening, global energy confinement or H-mode threshold powers. (C) 2000 American Institute of Physics. [S1070-664X(00)94405-7].
引用
收藏
页码：1894 / 1903
页数：10
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