简介:ByECHunderasteadyB_vfield,aclosedfieldequilibriumofalowaspectratioaslowasR/a=1.4isspontaneouslyformedintheLATEdevice.Afterthespontaneousformation,theplasmacurrenthasincreasedfurtheruptoI_P=7.2kAby2.45GHz,30kWandI_P=11kAby5GHz,120kW,byincreasingthemicrowavepowerwithaslowrampofB_vfortheequilibriumoftheplasmaloopatlargercurrents.Bothamountto12%ofthetotaltoroidalcoilcurrent.ECH/ECCDat2udharmonicresonanceofEBWsupportstheplasma.Anoutlineofthetheoreticalconsiderationsfortheformationprocessispresented.