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Energetic proton beam generation driven by J-KAREN laser

Mori, Michiaki; Ogura, Koichi; Yogo, Akifumi; Nishiuchi, Mamiko; Kiriyama, Hiromitsu; Pirozhkov, A. S.; Sagisaka, Akito; Orimo, Satoshi; Tampo, Motonobu; Daito, Izuru; Sakaki, Hironao; Hori, Toshihiko; Sugiyama, Hironori*; Esirkepov, T. Z.; Bulanov, S. V.; Okada, Hajime; Kondo, Shuji; Kanazawa, Shuhei; Nakai, Yoshiki; Tanoue, Manabu*; Shimomura, Takuya; Sasao, Hajime; Wakai, Daisuke*; Sasao, Fumitaka*; Sugiyama, Akira; Iwashita, Yoshihisa*; Noda, Akira*; Shirai, Toshiyuki*; Oishi, Yuji*; Nayuki, Takuya*; Fujii, Takashi*; Nemoto, Koshichi*; Choi, I. W.*; Lee, J.*; Nishimura, Hiroaki*; Bolton, P.; Daido, Hiroyuki; Kawanishi, Shunichi

Experimental studies of laser-driven ion acceleration aimed at ion therapy for cancer treatment are being conducted at the PMRC of JAEA using the J-KAREN Ti:Sapphire laser system at JAEA's APRC. In recent experiments thin foil targets have been irradiated with focused 38 fs laser pulses at the 1.8J laser energy. The energy spectrum of the proton beam is observed to extend to a cut-off value in excess of 7-MeV. Our results expose the prospects and challenges associated with developing a laser-driven ion therapy facility.

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