Author: Beebe, E.N.
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TUYGBE4 Optically-pumped Polarized H and 3 He++ Ion Sources Development at RHIC 644
  • A. Zelenski, G. Atoian, E.N. Beebe, A. Poblaguev, D. Raparia, J. Ritter
    BNL, Upton, Long Island, New York, USA
  • J.D. Maxwell, R. Milner, M. Musgrave
    MIT, Cambridge, Massachusetts, USA
  The RHIC Optically-pumped Polarized H Ion Source (OPPIS) upgrade with the atomic beam hydrogen injector and the He-ionizer cell was commissioned for operation in the Run-2013. The use of the high brightness primary proton source resulted in higher polarized beam intensity and polarization delivered for injection to Linac-Booster-AGS-RHIC accelerator complex. The proposed polarized 3He++ acceleration in RHIC and future electron- ion col-lider (eRHIC) will require about 2·1011 ions in the source pulse. A new technique had been proposed for production of high intensity polarized 3He++ ion beam. It is based on ionization and accumulation of the 3He gas (polarized by optical-pumping and metastability-exchange technique in the high magnetic field of a 5.0 T) in the Electron Beam Ion Source (EBIS). We present a status of the 3He++ ion source development.  
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TUPAF006 Operation of RHIC Injectors with Isobaric Ruthenium and Zirconium Ions 672
  • H. Huang, E.N. Beebe, I. Blacker, J.J. Butler, C. Carlson, P.S. Dyer, W. Fischer, C.J. Gardner, D.M. Gassner, D. Goldberg, T. Hayes, S. Ikeda, J.P. Jamilkowski, T. Kanesue, N.A. Kling, C. Liu, D. Maffei, G.J. Marr, B. Martin, J. Morris, C. Naylor, M. Okamura, D. Raparia, V. Schoefer, F. Severino, T.C. Shrey, K.S. Smith, D. Steski, P. Thieberger, K. Zeno, I.Y. Zhang
    BNL, Upton, Long Island, New York, USA
  • H. Haba
    RIKEN Nishina Center, Wako, Japan
  • T. Karino
    Utsunomiya University, Utsunomiya, Japan
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The FY18 RHIC physics program calls for Ru-Ru and Zr-Zr collisions at 100GeV using isobaric Ruthenium and Zirconium ions, each having 96 nucleons. In the injector chain, these two ions have to come from tandem and EBIS source, respectively. To reduce systematic errors in the detector, the luminosity between the two species combinations is matched as closely as possible, and the species are switched frequently. Several bunch merges are needed in the Booster and AGS to reach the desired bunch intensity for RHIC. The setup and performance of Booster and AGS with these ions are reviewed.
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