17 May 2017 High contrast high intensity petawatt J-KAREN-P laser facility at QST
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Abstract
We report on the J-KAREN-P laser facility at QST, which can provide PW peak power at 0.1 Hz on target. The system can deliver short pulses with an energy of 30 J and pulse duration of 30 fs after compression with a contrast level of better than 1012. Such performance in high field science will give rise to the birth of new applications and breakthroughs, which include relativistic particle acceleration, bright x-ray source generation, and nuclear activation. The current achieved laser intensity on target is up to > 9x1021 Wcm-2 with an energy of ~9 J on target. The interaction with a 3 to 5- μm stainless steel tape target provides us electrons with a typical temperature of more than 10 MeV and energetic proton beams with typical maximum energies of > 40 MeV with good reproducibility. The protons are accelerated in the Target Normal Sheath Acceleration regime, which is suitable for many applications including as an injector into a beamline for medical use, which is one of our objectives.
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Mamiko Nishiuchi, Hiromitsu Kiriyama, Hironao Sakaki, Nicholas P. Dover, Kotaro Kondo, Alexander S. Pirozhkov, Akito Sagisaka, Yuji Fukuda, Keita Nishitani, Takumi Miyahara, Koichi Ogura, Mariya A. Alkhimova, Tatiana A. Pikuz, Anatoly Ya. Faenov, Yukinobu Watanabe, James Koga, Sergei V. Bulanov, Masaki Kando, Kiminori Kondo, "High contrast high intensity petawatt J-KAREN-P laser facility at QST", Proc. SPIE 10241, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers III, 102410N (17 May 2017); doi: 10.1117/12.2271172; https://doi.org/10.1117/12.2271172
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