10.7910/DVN/GQXFCSXinjun Zhang; Lunan Liu; Chengming Qin; Lin, Y.; Ochoukov, R.; Yanping Zhao; Jean Marie, N.; Wukitch, S.; Gong, X.Z.; Wan, B.N.; Song, Y.T.; Shuai Yuan; Hua Yang; Yuzhou Mao; Yan Cheng; Lei Wang; Xu Deng; Gen Chen; Songqing Ju; Kai Zhang; Lanlan PingJean Hua Yan Lei Xu Gen Kai PingHarvard Dataverse2021Physicsactively powered I-port antennaEAST tokamakenhanced plasma potentialfast wave field intensityfast wave rectificationheating efficiencyloading resistancelocal fast wave intensitylow parallel wave numbermagnetic field lineplasma facing componentsslow wave intensitySOL regionsvoltage 100.0 V2021-06-29295942application/pdf2.0An experiment on EAST is used to study the fast wave rectification by only an actively powered I-port antenna. The plasma potential up to 100 V was found in the region that does not map along the magnetic field line to active I-port antenna. This enhancement correlates with the local fast wave intensity. An increase in the loading resistance and heating efficiency was observed at a low parallel wave number. The higher heating efficiency is seen to cause lower unabsorbed fast wave power in the SOL regions. This can cause a decrease in the fast wave field intensity that reaches plasma facing components and can result in a decrease in the plasma potential and slow wave intensity.<a href="http://library.psfc.mit.edu/catalog/reports/2010/19ja/19ja058/abstract.php">PSFC REPORT PSFC/JA-19-58</a><br /><br />This work was supported by DoE grant 6928419.