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Operational Limits and Limiting Instabilities in Tokamak Machines
Volume 45 · Number 2T · March 2004 · Pages 115-122
Technical Paper · Plasma and Fusion Energy Physics - Equilibrium and Instabilities
H. R. Koslowski
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This article outlines the constraints for operation of tokamaks. The operating space is restricted by several limitations among which the plasma performance has to be optimized. Hard limits which lead ultimately to a disruption and may damage the first wall as well as soft limits resulting in a reduction of the energy content of the plasma can occur. The operational limits can be summarized in two general groups: excessive radiation from the plasma, and violation of global as well as local MHD stability boundaries.
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