FAST EXTRACTION OF COOLED BEAM AT S-LSR

Formation and fast extraction of the short-bunched proton beam, which was obtained through combining an RF field with an electron cooler (EC), was carried out at S-LSR. S-LSR is the ion storage ring, which has an electron cooler and an un-tuned RF cavity, and it can extract the 7-MeV proton beam by the fast extraction method utilizing a fast kicker magnet. There are two methods to produce short-bunched beam, one is the phase rotation method and the other is that applying an RF field along with electron cooling. As a result, we succeeded to obtain the short-bunchedbeam of 8.4-ns by phase rotation method and 11-ns by another method