@techreport{oai:nifs-repository.repo.nii.ac.jp:00010062, author = {"Nishimura, K. and Kumazawa, R. and Mutoh, T. and Watari, T. and Seki, T. and Ando, A. and Masuda, S. and Shinpo, F. and Murakami, S. and Okamura, S. and Yamada, H. and Matsuoka, K. and Morita, S. and Ozaki, T. and Ida, K. and Iguchi, H. and Yamada, I. and Ejiri, A. and Idei, H. and Muto, S. and Tanaka, K. and Xu, J. and Akiyama, R. and Arimoto, H. and Isobe, M. and Iwase, M. and Kaneko, O. and Kubo, S. and Kawamoto, T. and Lazaros, A. and Morisaki, T. and Sakakibara, S. and Takita, Y. and Takahashi, C. and Tsumori, K."}, month = {Sep}, note = {ICRF heating experiments with five poloidal half-turn antennas have been carried out in Compact Helical System (CHS). These antennas designed for the inward shifted magnetic configuration (R_ax=92.1cm) were installed in the high field side of helical field. A high power RF pulse is applied to a deuterium plasma with hydrogen minority initiated by ECH or NBI. The plasma performance was mainly affected by the oxygen radiation which was reduced by more than 2 times by boronization. The plasma stored energy reached 2.2 kJ with 590 kW of RF power from 5 antennas and was sustained to the end of the RF pulse(60msec). Two-component ion energy spectrum was observed by NPA. The combined heating with NBI was also successful and achieved the increase in the stored energy of 0.8 kJ with 450 kW of RF power from 5 antennas.}, title = {ICRF Heating in CHS}, year = {1994} }