JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Son, H.J. AU - Beebe, E.N. AU - Crisp, D.B. AU - Henriques, A.I. AU - Knowles, C. AU - Lapierre, A. AU - Nash, S. AU - Villari, A.C.C. ED - Machicoane, Guillaume ED - Allen, Alexa ED - Lesage, Ana ED - Schaa, Volker R.W. TI - Status of the High-Current EBIS Charge Breeder for the Facility for Rare Isotope Beams J2 - Proc. of ECRIS2020, East Lansing, MI, USA, 28-30 September 2020 CY - East Lansing, MI, USA T2 - International Workshop on ECR Ion Sources T3 - 24 LA - english AB - The ReA post-accelerator of the National Supercon-ducting Cyclotron Laboratory (NSCL) at Michigan State University includes an Electron-Beam Ion Trap (EBIT) operating as a charge breeder. The Facility for Rare Iso-tope Beams (FRIB) is being implemented. After comple-tion, rare-isotopes beam rates are expected to exceed in some case 1010 particles per second (pps). The charge capacity of the ReA EBIT is insufficient to handle those rates. Therefore, parts of the TEST EBIS from the Brookhaven National Laboratory (BNL) were transferred to the NSCL to build a High-Current Electron-Beam Ion Source (HCEBIS). The HCEBIS features an electron gun that can provide a current up to 4 A for an estimated trap charge capacity of 1011 elementary charges. This paper presents the HCEBIS specifications, electron-beam cur-rent measurements to test its cathode, and simulation results for its implementation in the ReA post-accelerator. It also presents charge-capacity measurements conducted with the ReA EBIT that demonstrate that the HCEBIS will be able to handle beam rates of more than 1010 pps. PB - JACoW Publishing CP - Geneva, Switzerland SP - 172 EP - 176 KW - electron KW - cathode KW - simulation KW - gun KW - space-charge DA - 2022/07 PY - 2022 SN - 2222-5692 SN - 978-3-95450-226-4 DO - doi:10.18429/JACoW-ECRIS2020-NACB02 UR - https://jacow.org/ecris2020/papers/nacb02.pdf ER -