H. Shiraga, S. Fujioka, M. Koga, H. Nakamura, T. Watari, K. Shigemori, Y. Sakawa, H. Nishimura, K. A. Tanaka, H. Habara, T. Ozaki, M. Isobe, H. Homma, Y. Fujimoto, M. Nakai, T. Norimatsu, A. Iwamoto, T. Mito, N. Miyanaga, J. Kawanaka, T. Jitsuno, K. Tsubakimoto, Y. Nakata, N. Sarukura, H. Nagatomo, T. Johzaki, M. Murakami, K. Mima, H. Sakagami, A. Sunahara, T. Taguchi, Y. Nakao, and H. Azechi
Integrated experiments of Fast Ignition with Gekko-XII and LFEX lasers
Date of publication:
22 IAEA Fusion Energy Conference, IFE/1-2
Based on the successful result of fast heating of a shell target with a cone for heating beam injection, FIREX-1 project has been started from 2004. Its goal is to demonstrate fuel heating up to 5 keV by using upgraded heating laser beam. For this purpose, LFEX laser, which can deliver, at the full spec, an energy up to10 kJ in a 0.5-20 ps pulse, has been constructed beside Gekko-XII laser system at the Institute of Laser Engineering, Osaka University. It has been activated and became operational since 2009. Upgraded integrated experiments of Fast Ignition have been performed by using LFEX laser. Initial experimental results including implosion of the shell target by Gekko-XII, heating of the imploded fuel core by LFEX laser injection, and enhancement of the neutron generation due to fast heating have been achieved. Results indicate that 5-keV heating can be expected at full output of LFEX laser with improved heating efficiency.