Half-mini beta optics with a bunch rotation for warm dense matter science facility in KEK

A half-mini beta optics is studied for a warm dense matter science facility in KEK. The irradiation onto a target at a small focal spot (< a few mm) with a short pulse duration (~100 nsec) is required. The final focus is carried out through a half-mini beta beamline placed after the kickout from the 500 MeV Booster improved. The space charge effect is evaluated for the beamline in the high current beam. The beam optics concerned with the effects of space charge and a large momentum spread during the half-mini beta system is investigated for the study of the warm dense matter science in KEK.