Multi-Laser-Wire Profile Monitor for J-PARC 400 MeV H⁻ Beam

Abstract

Many parallel laser beams can be formed in an asymmetrical confocal cavity. Since position and size of those beams are controllable, those beams, called as “multi-laser-wire”, can be used as a profile monitor of ion beam when a proper interaction between laser beam and ion beam is applicable. A multi-laser-wire profile monitor of 400 MeV H⁻ beam based on the photo-detachment is proposed.