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Oct 13 – 18, 2014
Hotel Park Inn Pribaltiyskaya
Europe/Moscow timezone

Experimental Platform for Efficient Heating of Fusion Fuel with Fast-Ignition Scheme

Oct 16, 2014, 8:50 AM
20m
Blue 1-5 (Hotel Park Inn Pribaltiyskaya)

Blue 1-5

Hotel Park Inn Pribaltiyskaya

Saint Petersburg, Russian Federation

Speaker

Mr Shinsuke Fujioka (Japan)

Description

A series of experiments were carried out to evaluate energy coupling efficiency from a heating laser to a fuel core in the fast-ignition scheme of laser-driven inertial confinement fusion. Here we break down the efficiency, which is governed by enormous interactions and instabilities among intense laser, high-energy-density plasma, and relativistic electron beam (REB), into three measurable parameters: (i) energy conversion efficiency from a laser to a REB, (ii) probability of collision between the REB and a fusion fuel core, and (iii) fraction of energy deposited in the fuel core from the REB. These three parameters were measured in the basic experiment under mimic plasma circumstances of the integrated fast-ignition experiment. In the heating experiment, fusion neutron yield was measured to understand the heating mechanism by comparing the yield with a two-dimensional Fokker-Planck computation of the REB transport in the core plasma. The experimental results indicate that ‘unstoppable’ and ‘diverging’ problems of the REB must be solved for heating the fuel core efficiently with the REB. Guiding of the REB by > 1 kT magnetic field produced by a laser-driven capacitor-coil target is essential to overcome these difficulties.
Paper Number IFE/1-2
Country or International Organisation Japan

Primary author

Mr Shinsuke Fujioka (Japan)

Co-authors

Dr Atsushi Sunahara (Institute for Laser Technology) Dr Hideo Nagatomo (Institute of Laser Engineering, Osaka University) Mr Hiroaki Inoue (Institute of Laser Engineering, Osaka University) Prof. Hiroaki Nishimura (Institute of Laser Engineering, Osaka University) Prof. Hiroshi AZECHI (Institute of Laser Engineering, Osaka University) Dr Hiroshi Sawada (Department of Physics, University of Nevada) Prof. Hiroyuki Shiraga (Institute of Laser Engineering, Osaka University) Prof. Hitoshi Sakagami (National Institute for Fusion Science) Prof. Javier Honrubia (Department of Applied Physics, School of Aerospace Engineering, Universidad Politecnica de Madrid) Dr Joao Santos (University of Bordeaux) Dr Jyunji Kawanaka (Institute of Laser Engineering, Osaka University) Mr Kazuhiro Ishihara (Institute of Laser Engineering, Osaka University) Dr Keisuke Shigemori (Institute of Laser Engineering, Osaka University) Dr Kohei Yamanoi (Institute of Laser Engineering, Osaka University) Dr Koji Tsubakimoto (Institute of Laser Engineering, Osaka University) Mr Kojima Sadaoki (Institute of Laser Engineering, Osaka University) Prof. Kunioki Mima (The Graduate School for the Creation of New Photon Industries) Dr Lorenzo Giuffrida (University of Bordeaux) Mr Masaki Taga (Institute of Laser Engineering, Osaka University) Mr Masaru Utsugi (Institute of Laser Engineering, Osaka University) Prof. Mitsuo Nakai (Institute of Laser Engineering, Osaka University) Dr Morace Alessio (Institute of Laser Engineering, Osaka University) Prof. Noriaki Miyanaga (Institute of Laser Engineering, Osaka University) Mr Seung Ho Lee (Institute of Laser Engineering, Osaka University) Dr Shigeki Tokita (Institute of Laser Engineering, Osaka University) Mr Shoji Hattori (Institute of Laser Engineering, Osaka University) Mr Syohei Sakata (Institute of Laser Engineering, Osaka University) Dr TOMOYUKI JOHZAKI (Graduate School of Engineering, Hiroshima University) Mr Takahiro Nagai (Institute of Laser Engineering, Osaka University) Prof. Takahisa Jitsuno (Institute of Laser Engineering, Osaka University) Mr Takahito Ikenouchi (Institute of Laser Engineering, Osaka University) Prof. Takayoshi Norimatsu (Institute of Laser Engineering, Osaka University) Dr Takayoshi Sano (Institute of Laser Engineering, Osaka University) Mr Tatsuya Hosoda (Institute of Laser Engineering, Osaka University) Dr Tetsu Ozaki (National Institute for Fusion Science) Prof. Toshihiro Taguchi (Department of Electrical and Electronics Engineering, Setsunan University) Dr Yasunobu Arikawa (Insituteof Laser Engineering Osaka University) Mr Yasushi Fujimoto (Institute of Laser Engineering, Osaka University) Dr Yoichiro Hironaka (Institute of Laser Engineering, Osaka University) Dr Yoshiki Nakata (Institute of Laser Engineering, Osaka University) Mr Yuki Abe (Institute of Laser Engineering, Osaka University) Dr Zhe Zhang (Institute of Laser Engineering, Osaka University)

Presentation materials