Takeiri, Y., Kaneko, O., Tsumori, K., Fantz, U., Ikeda, K., Nagaoka, K., Osakabe, M., Oka, Y., Asano, E., Kondo, T., Sato, M., Shibuya, M., & Komada, S. (2006). High-power negative ion sources for neutral beam injectors in large helical device. Talk presented at 11th International Symposium on the Production and Neutralization of Negative Ions and Beams (PNNIB-11). Santa Fe, NM. 2006-09-13 - 2006-09-15.