1. ITER Joint Central Team, Naka 801-01 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken, 311-0193 Japan
2. Superconducting Magnet Lab, JAERI 801-01 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken, 311-0193 Japan
3. MIT Plasma Science & Fusion Center 185 Albany St. Cambridge, MA 02139 USA