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Report No.
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Prospects of J-KAREN upgrade and high field science

Kando, Masaki; Bolton, P.; Bulanov, S. V.; Esirkepov, T. Z.; Fukuda, Yuji; Hayashi, Yukio; Kanasaki, Masato; Kawachi, Tetsuya; Kiriyama, Hiromitsu; Koga, J. K.; Kon, Akira; Kondo, Kiminori; Kotaki, Hideyuki; Mori, Michiaki; Nishiuchi, Mamiko; Ogura, Koichi; Pirozhkov, A. S.; Sagisaka, Akito; Sakaki, Hironao

We are now upgrading our Ti:sapphire laser system with chirped pulse amplification (CPA) at the Kansai Photon Science Institute, Japan Atomic Energy Agency. The laser system will be able to provide $$sim$$ PW level on target at the repetition rate of 0.1 Hz. The challenge is to achieve the focused intensity of 10$$^{22}$$ W/cm$$^2$$ with a f/1.4 optic employing two deformable mirrors. Two target chambers are prepared mainly for short-focus (f/1.4) with multiple vacuum ports and for long-focus f/10 or f/20. Applications of such intense lasers are also presented. They are relativistic flying mirrors, high order harmonics generation, ion acceleration, and $$gamma$$ ray flash, etc.

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