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Report No.

High-power laser storage ring to realize laser stripping injection for a few-MW proton accelerator

Harada, Hiroyuki  ; Saha, P. K.   ; Kato, Shinichi; Kinsho, Michikazu  ; Suganuma, Kazuaki ; Yamane, Isao*; Irie, Yoshiro*

The high-intensity proton accelerator adopts a charge exchange injection scheme, which injects with exchanging from negative Hydrogen ion to proton by using carbon foil. This scheme can realize high intensity proton beam but the uncontrolled beam losses are caused by scattering between beams and the foil. Additionally, the collision may occur the foil beak. Therefore, a new injection scheme for higher intensity is needed as an alternative to the foil. In the J-PARC 3GeV RCS, we newly propose and develop a laser stripping injection scheme However, it is necessary that laser power is two order higher than latest laser one. To realize this big issue, we develop the laser storage ring, which can provide laser pulse of high repetition rate by recycling one. In this presentation, we will introduce the laser stripping injection scheme and describe the concept of the laser storage ring with high repetition rate.



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