Electron Cyclotron Heating (ECH) discharges of the tokamakASDEX Upgrade, exhibiting Te profile resilience, are used to test theWeiland model in the case of dominant electron heating. Electron heattransport is investigated also transiently, with heat pulsepropagation induced by ECH power modulation. The Weiland model,dominated by the Trapped Electron Mode physics in this parameter range,predicts the experimental Te well, both the time averaged profile aswell as the amplitude and phase of the Te perturbation.Interestingly, in the confinement region the experimental ∇Te/Te is up to three times larger than the critical thresholdpredicted by the model.
Evaluation of the local heat conductivity coefficient by power-modulated electron cyclotron heating in the Wendelstein VII-A Stellarator