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Milner, R.

Paper Title Page
TPPP022 The eRHIC Ring-Ring Collider Design 1766
  • F. Wang, M. Farkhondeh, W.A. Franklin, W. Graves, R. Milner, C. Tschalaer, D. Wang, A. Zolfaghari, T. Zwart, J. van der Laan
    MIT, Middleton, Massachusetts
  • D.P. Barber
    DESY, Hamburg
  • J. Beebe-Wang, A. Deshpande, V. Litvinenko, W.W. MacKay, C. Montag, S. Ozaki, B. Parker, S. Peggs, V. Ptitsyn, T. Roser, S. Tepikian, D. Trbojevic
    BNL, Upton, Long Island, New York
  The eRHIC ring-ring collider is the main design option of the future lepton-ion collider at Brookhaven National Laboratory. We report the revisions of the ring-ring collider design features to the baseline design presented in the eRHIC Zeroth Design Report (ZDR). These revisions have been made during the past year. They include changes of the interaction region which are required from the modifications in the design of the main detector. They also include changes in the lepton storage ring for high current operations as a result of better understandings of beam-beam interaction effects. The updated collider luminosity and beam parameters also take into account a more accurate picture of current and future operational aspects of RHIC.  
WOAD004 A High Luminosity Electron-Ion Collider To Study the Fundamental Structure of Matter
  • R. Milner
    MIT, Middleton, Massachusetts
  Physicists seeking to understand the fundamental structure of matter in terms of Quantum Chromodynamics have identified a high luminosity (~1033 nucleon cm-2 s-1) electron-ion collider (EIC) with a center-of-mass energy range of approximately 10 to 100 GeV as the most promising next-generation accelerator configuration. The talk will briefly summarize the scientific motivation for EIC and describe a number of accelerator design configurations under consideration. Important areas requiring R&D for EIC realization will be identified.  
FPAE031 Polarized Electron Beams for Nuclear Physics at the MIT Bates Accelerator Center
  • M. Farkhondeh, dc. Cheever, W.A. Franklin, E. Ihloff, B. McAllister, R. Milner, W. North, C. Tschalaer, E. Tsentalovich, D. Wang, D. Wang, F. Wang, A. Zolfaghari, T. Zwart, J. van der Laan
    MIT, Middleton, Massachusetts
  Funding: U.S. Department of Energy.

The MIT Bates Accelerator Center is delivering highly polarized electron beams to its South Hall Ring for use in Nuclear Physics Experiments. Circulating electron currents in excess of 200 mA with polarization of 70% are scattered from a highly polarized, but very thin atomic beam source deuterium target. At the electron source a compact diode laser creates photoemission of quasi-CW mA pulses of polarized electrons at low duty factors from a strained GaAs photocathode. Refurbished RF transmitters provide power to the 2856 MHz linac, accelerating the beam to 850 MeV in two passes before injection into the South Hall Ring. In the ring a Siberian snake serves to maintain a high degree of longitudinal polarization at the BLAST scattering target. A Compton laser back-scattering polarimeter measures the electron beam polarization with a statistical acuracy of 6% every 15 minutes.