Electron Thermal Conductivity in H-mode in EAST

Electron thermal transport in typical shots of high-confinement (H-mode) achieved with Lower Hybrid Wave (LHW),LHW and Ion Cycle Radio Frequency (ICRF) together is studied in EAST.The electron thermal conductivity during H-mode significantly decreases in comparison to L-mode,especially in the edge area.For these typical shots,the threshold value of R/L_Te should be 3 to 11.The values of confinement time in three shots are related to the electron thermal conductivities.When the electron thermal conductivity is bigger,confinement time would be smaller.