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Report No.

Status of proof-of-principle experiment for 400 MeV H$$^{-}$$ stripping to protons by using only lasers in the 3-GeV RCS of J-PARC

Saha, P. K.  ; Harada, Hiroyuki ; Yamane, Isao*; Kinsho, Michikazu ; Miura, Akihiko ; Okabe, Kota ; Liu, Y.*; Yoshimoto, Masahiro ; Kato, Shinichi; Irie, Yoshiro*

The conventional H$$^{-}$$ stripping injection by using solid stripper foil has serious issues not only because of high residual radiation at injection area due to uncontrolled beam losses caused by the foil and beam interaction, but also for the short lifetime, especially in high intensity accelerators. In order to overcome those issues, we proposed an alternative method of H$$^{-}$$ stripping by using only lasers. Experimental study for a POP (proof-of-principle) demonstration of the present principle is under preparation for 400 MeV H$$^{-}$$ stripping in the 3-GeV RCS of J-PARC. The studies of laser beam itself and also the H$$^{-}$$ beam optimization studies to match with given laser pulses are in progress, where the first interaction of the H$$^{-}$$ beam and the laser is planned to perform in this fiscal year. The status and detail strategy of the present research are summarized in this work.



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