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An accurate description of turbulence up to the transport time scale isessential for predicting core plasma profiles and enabling reliablecalculations for designing advanced scenarios and future devices. Here, weexploit the gap separation between turbulence and transport time scales andcouple the global gyrokinetic code GENE to the transport-solver Tango,including kinetic electrons, collisions, realistic geometries, toroidalrotation and electromagnetic effects for the first time. This approachovercomes gyrokinetic codes' limitations and enables high-fidelity profilecalculations in experimentally relevant plasma conditions, significantlyreducing the computational cost.  We present numerical results of GENE-Tango for two ASDEX Upgrade discharges,one of which exhibits a pronounced peaking of the ion temperature profile notreproduced by TGLF-ASTRA. We show that GENE-Tango can correctly capture the iontemperature peaking observed in the experiment. By retaining different physicaleffects in the GENE simulations, e.g., collisions, toroidal rotation andelectromagnetic effects, we demonstrate that the ion temperature profile'speaking is due to electromagnetic effects of submarginal MHD instability. Basedon these results, the expected GENE-Tango speedup for the ITER standardscenario is larger than two orders of magnitude compared to a singlegyrokinetic simulation up to the transport time scale, possibly makingfirst-principles ITER simulations feasible on current computing resources.

Global gyrokinetic simulations of ASDEX Upgrade up to the transport time-scale with GENE-Tango