DESIGN STUDY OF THE SLOW-EXTRACTION SYSTEM FOR THE JHF 50-GEV MAIN RING

A slow extraction system for the 50-GeV main ring of the Japan Hadron Facility (JHF) has been designed. At a current version of the lattice the ring has four 60-m-long straight sections. In two of them, which are apart from each other by 1/2 circumference, are used for septa: one is for an electrostatic septum, and the other for five magnetic ones. Beam simulations have been done to compare the performances of the third-integer resonance technique and the half-integer resonance one.