ICRH modelling of DTT in full power and reduced-field plasma scenarios by full wave codes

Abstract An in-depth analysis of Ion Cyclotron Resonance Heating (ICRH) absorption in the Divertor Tokamak Test (DTT) plasma has been performed over the years following the evolution of the machine parameters: i.e. magnetic 2ield, major and minor radii, etc. and in agreement with the prescription of the transport codes regarding expected kinetic pro+iles. The use of the ICRH in DTT even with plasma parameters at reduced toroidal magnetic /ield has recently reopened the analysis and modelling of the ICRH also in this context in order to evaluate whether the antenna setup (frequency range, coupled spectra etc.) is compatible with the scenario planned in the 'irst years of DTT operations. To this end, the numerical code TORIC-SSFPQL has been extensively used for a parametric analysis: minority or majority heating ("irst harmonic of Deuterium in the Hydrogen minority scenario), magnetic *ield, frequency, spectra (parallel wave number, power, etc.) in both full heating and full performance machine scenarios and also in the reduced !ield plasma scenario (B=3T, Ip=2MA). In this work the results of this extensive parametric investigation are summarized, and prescriptions are also given for the correct use of ICRH in order to maximize ion heating in all the device performances.