1. Japan Atomic Energy Research Institute,Ibaraki 319-1195,Japan
2. Power & Industrial System R&D Division,Hitachi Ltd.,Hitachi 319-1221,Japan
3. Hitachi Works,Hitachi Ltd.,Hitachi 317-8511,Japan
4. Nuclear Fusion Development,Mitsubishi Electric Corporation,Tokyo 100-8310,Japan
5. Advanced Reactor & Nuclear Fuel Cycle Engineering Department Mitsubishi Heavy Industries,Ltd.,Yokohama 220-8401,Japan