FAST Load Assembly conceptual design

FAST (Fusion Advanced Studies Torus) is a proposal for a Satellite Facility which can contribute the rapid exploitation of ITER and prepare ITER and DEMO regimes of operation, as well as exploiting innovative DEMO technology. FAST is a compact (Ro = 1.82 m, a = 0.64 m, triangularity δ = 0.4) machine able to investigate non linear dynamics effects of alpha particle behaviours in burning plasmas [1][ [2][5]. The project is based on a dominant 30 MW of ICRH, 6 MW of LH and 4 MW of ECRH. FAST operates at a wide range [3][4] of parameters e.g., in high performance H-Mode (BT up to 8.5 T; IP up to 8 MA) as well as in Advanced Tokamak operation (I P =3 MA), and full non inductive current scenario (I P =2 MA). Helium gas at 30 K is used for cooling the resistive copper magnets [6]. That allows for a pulse duration up to 170 s. Tungsten (W) or Liquid Lithium (L-Li) have been chosen as the divertor plates material, and Argon or Neon as the injected impurities to mitigate the thermal loads.