title: A design study for a compact two stage in-flight separator with a high mass resolution and large acceptance.
abstract: The rare isotope beam separator with a large angular acceptance and energy acceptance is essential for examining the characteristics of unstable nuclei and exotic nuclear reactions. Careful design, however, is required to compensate for the effects of high order aberrations induced by large aperture magnets, which are used to collect rare isotopes obtained from a high energy primary heavy-ion beam hitting a target. In order to minimize the effect of the high order aberration, the optics was based on the mirror symmetry optics, which provides smaller high order aberrations, for the separation of (132)Sn produced by a fission reaction between the primary beam of (238)U and a relatively thick Pb target. The designed optics provides energy acceptance (full), horizontal angular acceptance, and vertical acceptance of approximately 8%, 60 mrad, and 130 mrad, respectively.
authors.affiliation: Korea Institute of Radiological and Medical Sciences, 215-4 Gongneung-dong, Nowon-gu, Seoul 139-706, South Korea.
authors.forename: Ji-Gwang
authors.initials: JG
authors.lastname: Hwang
authors.affiliation: Department of Physics, Kyungpook National University, Daegu 702-701, Korea.
authors.forename: Eun-San
authors.initials: ES
authors.lastname: Kim
authors.affiliation: RCNP, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
authors.forename: Kichiji
authors.initials: K
authors.lastname: Hatanaka
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D007477:Ions; D007854:Lead; D010315:Particle Accelerators / Q000295:instrumentation*; D014001:Tin; D014501:Uranium
chemical_list: D007477:Ions; D007854:Lead; D014501:Uranium; D014001:Tin