Development of a radioactive ion beam facility using 15 UD tandem accelerator at NSC

Abstract

An inflight radioactive ion beam (RIB) facility is being developed at the Nuclear Science Centre (NSC), using the existing 15 UD Pelletron accelerator and the recoil mass spectrometer (RMS) HIRA. Though the basic principle of operation of the facility will be similar to those described in [1-3], ion optics of the facility are optimized for precise nuclear reaction measurements. In this facility, primary beams from the Pelletron accelerator will be used to produce RIB species using reactions such as , , etc in inverse kinematics. To ensure an efficient beam rejection for inverse kinematic reactions with good focusing of the RIB, HIRA will operate in a new ion optical mode. In this mode, there is an intermediate focal plane where a beam filtering slit system will be installed to stop primary beam particles while allowing RIB particles to be transported unhindered to the final focal plane which will be the secondary target position. In the case of many RIB species, more than one charge state will be focused into a single spot at the experimental target site. The design and installation of hardware for the facility is in progress. RIB species such , , etc, will be available with intensity in the range of - with diameter spot size with high purity. The facility is expected to be operational for user experiments by the end of 1998.