NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, v.541, pp.286 - 288
Abstract
The Electron Beam Ion Source (EBIS) charge breeder is used to produce highly charged ions in the Isotope Separation On-Line (ISOL) system of the Rare isotope Accelerator complex for ON-line experiments (RAON). Beam tests of the EBIS are performed using stable Cs and Sn ion beams. Cs-133(1+) ions from a test ion source were injected into the EBIS to measure the breeding effect with the electron beam. The resulting relative abundance of Cs-133(27+) was 25.0%, and the extraction energy was 49.3 keV/q. A charge breeding test of the Sn-120 ions from the Target Ion Source (TIS) of the ISOL system was also carried out. The charge fraction of Sn-120(24+) was 23.0%, and the energy was 50 keV/q. These results fulfilled the input beam condition of the RFQ accelerator (A/q < 6 and 10 keV/u). Additionally, Cs-133(27+) ions were extracted with a pulse length up to 10 ms (FWHM) by the preliminary pulse-stretching experiment.