Article ID Journal Published Year Pages File Type
9638396 Fusion Engineering and Design 2005 7 Pages PDF
Abstract
In order to achieve long pulse high performance plasma discharges, the actively cooled limiter system on HT-7 tokamak was upgraded in the end of 2003. High heat flux toroidal limiters based on copper alloy heat sink structures with bolt linking concept have been developed in order to enable a large increase of power extraction capacity. In the first plasma operation with the new limiter system, very promising results had been obtained (31 MJ of injected and removed power during 237 s discharge) in 2004. Repeated long plasma discharges were easily obtained. Low temperature of the graphite tiles, and low impurity level was observed during long plasma operation. In a long-term plasma operation, most tiles were only lightly eroded.
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Physical Sciences and Engineering Energy Energy Engineering and Power Technology
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