Status of the High-Current EBIS Charge Breeder for the Facility for Rare Isotope Beams

Son, Hyock-Jun; Beebe, Edward; Crisp, Dan; Henriques, Ana; Knowles, Cody; Lapierre, Alain; Nash, Samuel; Villari, Antonio

doi:10.18429/JACoW-ECRIS2020-NACB02

Journals of Accelerator Conferences Website (JACoW)

JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.

BiBTeX citation export for NACB02: Status of the High-Current EBIS Charge Breeder for the Facility for Rare Isotope Beams

@inproceedings{son:ecris2020-nacb02,
  author       = {H.J. Son and E.N. Beebe and D.B. Crisp and A.I. Henriques and C. Knowles and A. Lapierre and S. Nash and A.C.C. Villari},
% author       = {H.J. Son and E.N. Beebe and D.B. Crisp and A.I. Henriques and C. Knowles and A. Lapierre and others},
% author       = {H.J. Son and others},
  title        = {{Status of the High-Current EBIS Charge Breeder for the Facility for Rare Isotope Beams}},
  booktitle    = {Proc. ECRIS'20},
% booktitle    = {Proc. 24th International Workshop on ECR Ion Sources (ECRIS'20)},
  pages        = {172--176},
  eid          = {NACB02},
  language     = {english},
  keywords     = {electron, cathode, simulation, gun, space-charge},
  venue        = {East Lansing, MI, USA},
  series       = {International Workshop on ECR Ion Sources},
  number       = {24},
  publisher    = {JACoW Publishing, Geneva, Switzerland},
  month        = {07},
  year         = {2022},
  issn         = {2222-5692},
  isbn         = {978-3-95450-226-4},
  doi          = {10.18429/JACoW-ECRIS2020-NACB02},
  url          = {https://jacow.org/ecris2020/papers/nacb02.pdf},
  abstract     = {{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.}},
}