The mega amp spherical tokamak

H. Meyer     CCFE, Culham Science Centre, Abingdon, Oxon, United Kingdom


The Mega Amp Spherical Tokamak (MAST) is one the largest tight aspect ratio A = R/a  1.5 tokamaks in the world. Operating since 1998 research on MAST contributed strongly to the ITER/DEMO physics basis, future spherical tokamak concepts and basic plasma science. With temperatures of Te,i  3keV, densities of n¯imagee≲1.4 × 1020m3) and a plasma current of ≲1.2 MA MAST parameters are comparable conventional tokamaks with similar poloidal cross section (DIII-D, ASDEX Upgrade), despite the much lower toroidal field. After its current substantial ...

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