MAGNETIC CONFIGURATION EFFECTS ON TEMPERATURE PROFILE PERTURBATIONS OBSERVED DURING ECH EXPERIMENTS IN TJ-II

摘要

A variety of core transport phenomena have been observed in low-density plasmas in TJ-II stellarator with electron cyclotron resonance heating (ECRH). Experimental evidence of the linkage between the appearance of these phenomena and the magnetic structure is discussed. These experimental findings point out the crucial role played by the low-order rational surfaces on core transport in TJ-II.