Keyword: solenoid
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TUPB14 New Beam Position Monitors for the CERN Linac3 to LEIR Ion Beam Transfer Line electron, linac, simulation, vacuum 293
 
  • L. Søby, G. Baud, M. Bozzolan, R. Scrivens
    CERN, Geneva, Switzerland
 
  The injection line into the CERN Low Energy Ion Ring (LEIR) has recently been equipped with nine, new, electrostatic Beam Position Monitors (BPMs) in order to measure and optimize the trajectory of the low intensity ion beams coming from LINAC3. In this paper, we describe the design of the BPM, the low noise charge amplifier mounted directly on the BPM, and the digital acquisition system. There is special emphasis on the first commissioning results where the measured beam positions were seen to be perturbed by EMI and charging of the BPM electrodes by secondary particles. The effect of mitigation measures, including repelling voltages on the electrodes and external magnetic fields, are also discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPB14  
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WEPB21 Transverse Beam Emittance Measurements with Multi-Slit and Moving-Slit Devices for LEReC emittance, electron, cavity, optics 486
 
  • C. Liu, A.V. Fedotov, D.M. Gassner, X. Gu, D. Kayran, J. Kewisch, T.A. Miller, M.G. Minty, V. Ptitsyn, S. Seletskiy, A. Sukhanov, D. Weiss
    BNL, Upton, Long Island, New York, USA
  • A. Fuchs
    Ward Melville High School, Setauket- East Setauket, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
Low Energy RHIC electron cooling (LEReC) [1] is the first bunched electron cooler, designed to cool low energy ion beams at RHIC. The beam quality, including the transverse beam emittance, is critical for the success of cooling. The transverse electron beam emittance was characterized with a multi-slit and moving-slit device at various locations in the beamline. The beam emittance measurement and analysis are presented in this report.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-WEPB21  
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