2012•Nuclear FusionRequires access
Initial results on plasma heating experiments in the ion cyclotron range of frequencies on EAST
Xingju Zhang, Y.P. Zhao, Bao-Fei Wan, X.Z. Gong, Yuxin Mao, Shuai Yuan, D.Y. Xue, L. Wang, C.M. Qin, S.Q. Ju, Ye Chen, J P Qian, Liqun Hu, JG Li, YT Song, Y. Lin, S.J. Wukitch, J.-M. Noterdaeme, R. Kumazawa, T. Seki, Kenji Saito, Hiroshi Kasahara
Open publisher page 36 citations
Abstract
Plasma heating using fast waves was successfully performed on the Experimental Advanced Superconducting Tokamak (EAST) in the H minority regime in deuterium plasmas at 27 MHz and B o = 2.0 T. With 1.0 MW of ion cyclotron range of frequency (ICRF) power injected at a line-averaged electron density of 4.0 × 1019 m−3, the electron temperature increased from 1.0 keV to above 2.0 keV and the loop voltage dropped. An increase in the stored energy by 30 kJ was obtained. The first H-mode plasma of 6.4 s was achieved with a combination of lower hybrid wave and ICRF heating. Density pump-out was observed during L-mode discharges at a high electron density of 4.0 × 1019 m−3. In these discharges, re-attachment of the plasma was observed when ICRF power was applied.