Results from the MAST spherical tokamak

Sykes, A.,Ahn, J.-W.,Akers, R.J.,Arends, E.,K B Axon,R J Buttery,C Byrom,P G Carolan,D Ciric,N J Conway, Mathew B Cox,G F Counsell,Gregory S Cunningham,A C Darke,James J Dowling,M R Dunstan,A R Field,S J Fielding,S Gee,M P Gryaznevich,R J Hayward,P Helander,M Hood,A Kirk, I Lehane,B A Lloyd,G Maddison,S J Manhood,R W Martin,G J Mcardle, H H D Meyer, M Mgrath,A W Morris, M P S Nightingale,T Pinfold,M Price, Carla M S Ribeiro,D C Robinson,V Shevchenko,K Stammers,A Tabasso,D M Taylor,M R Tournianski,M Valovic,G M Voss,M J Walsh,S E V Warder,H R Wilson

msra（2002）

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摘要

The MAST (Mega-Amp Spherical Tokamak) experiment has been operational since Jan 2000. Results from MAST are important both in evaluating the potential of future ST fusion devices, and in developing understanding of processes relevant to conventional aspect ratio tokamaks. In this paper methods of initiating, ramping up, and sustaining the high plasma currents associated with ST fusion devices are discussed. New physics results, including the effectiveness of inboard gas puffing, the threshold power required for the L-H transition, and the 'natural' divertor configuration are given. Plans for improvements during 2002 are outlined.

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关键词

Tokamak devices,fusion reactor divertors,fusion reactor theory,plasma toroidal confinement,L-H transition,MAST,Mega-Amp Spherical Tokamak,divertor,inboard gas puffing,plasma currents,ramping,threshold power

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