The ITER Divertor Pumping System, Design Evolution, Simplification and Performance
Fusion Engineering and Design(2013)
ITER Org
Abstract
The ITER tokamak will be fuelled at a time averaged rate of up to 200Pam3s−1 requiring neutralised gas in the divertor to be pumped to balance the fuelling and remove the fusion helium and other impurities in the exhaust. This is achieved on ITER using large bespoke cryo-sorption pumps. In this paper design evolution of the ITER divertor pumping system is outlined from the 1998 configuration to the current design. Details of the new, 6 direct pump, system design which will be used in the build of ITER are given. The operating modes of the new system configuration for different plasma scenarios are described and the performance of the new system is analysed and compared with previous baselines.
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Key words
ITER,Vacuum,Cryo-pump,Divertor,Tokamak,Pumping
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