Fast ions transport and confinement in the FAST conceptual design.

The transport and confinement of fast (MeV) ions produced by ICRH in magnetically confined plasmas close to fusion reactor conditions and relevant for investigating burning plasmas [1] is studied in this work. In particular we analyze the case of FAST (Fusion Ad-vanced Studies Tokamak) conceptual design, proposed as a possible European ITER Satel-lite facility aimed at preparing ITER operation scenarios and experimentally studying burn-ing plasma physics issues in deuterium plasmas. Predictive 1.5-D transport simulations are performed by means of JETTO, using a semi-empirical mixed Bohm/gyro-Bohm transport model to calculate dynamic evolution of a time dependent axisymmetric MHD equilibrium [2]. The coupled problem of propagation and quasi-linear power absorption of ICRH is set-tled by using the 2-D full wave code TORIC in combination with SSQLFP, which solves the quasi-linear Fokker-Planck equation in 2-D velocity space [3]. Once the effective tempera-ture of the minority ion tail and the fraction of fast ions are consistently evaluated [4], we simulate the stability of energetic particle driven modes with the HMGC code [5]. HMGC is a hybrid Magnetohydrodinamics-Gyrokinetic 3-D simulation code, which properly take