Author: Liu, C.
Paper Title Page
MOPA09 Overview of Beam Instrumentation and Commissioning Results from the Coherent Electron Cooling Experiment at BNL 43
 
  • T.A. Miller, J.C.B. Brutus, W.C. Dawson, D.M. Gassner, R.L. Hulsart, P. Inacker, J.P. Jamilkowski, D. Kayran, V. Litvinenko, C. Liu, R.J. Michnoff, M.G. Minty, P. Oddo, M.C. Paniccia, I. Pinayev, Z. Sorrell, J.E. Tuozzolo
    BNL, Upton, Long Island, New York, USA
  • V. Litvinenko
    Stony Brook University, Stony Brook, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
The Coherent Electron Cooling (CeC) Proof-of-Principle experiment [1], installed in the RHIC tunnel at BNL, has completed its second run. In this experiment, an FEL is used to amplify patterns imprinted on the cooling electron beam by the RHIC ion bunches and then the imprinted pattern is fed back to the ions to achieve cooling of the ion beam. Diagnostics for the CeC experiment have been fully commissioned during this year’s run. An overview of the beam instrumentation is presented, this includes devices for measurements of beam current, position, profile, bunch charge, emittance, as well as gun photocathode imaging and FEL infra-red light emission diagnostics. Design details are discussed and beam measurement results are presented.
[1] I. Pinayev, et al, ’First Results of Proof-of-Principle Experiment of Coherent Electron Cooling at BNL’ proceedings from IPAC 2018, Vancouver, CANADA 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-MOPA09  
About • paper received ※ 04 September 2018       paper accepted ※ 12 September 2018       issue date ※ 29 January 2019  
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TUPA17 Status of the BNL LEReC Machine Protection System 249
 
  • S. Seletskiy, Z. Altinbas, D. Bruno, M.R. Costanzo, K.A. Drees, A.V. Fedotov, D.M. Gassner, X. Gu, L.R. Hammons, J. Hock, R.L. Hulsart, P. Inacker, J.P. Jamilkowski, D. Kayran, J. Kewisch, C. Liu, K. Mernick, T.A. Miller, M.G. Minty, M.C. Paniccia, W.E. Pekrul, I. Pinayev, V. Ptitsyn, V. Schoefer, L. Smart, K.S. Smith, R. Than, P. Thieberger, J.E. Tuozzolo, W. Xu, Z. Zhao
    BNL, Upton, Long Island, New York, USA
  
  The low energy RHIC Electron Cooler (LEReC) will be operating with 1.6-2.6 MeV electron beams having up to 140 kW power. It was determined that under the worst case scenario the missteered electron beam can damage the vacuum chamber and in-vacuum components within 40 us. Hence, the LEReC requires a dedicated fast machine protection system (MPS). The LEReC MPS has been designed and built and currently is under commissioning. In this paper we describe the most recent developments with the LEReC MPS.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPA17  
About • paper received ※ 31 August 2018       paper accepted ※ 13 September 2018       issue date ※ 29 January 2019  
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WEPB21 Transverse Beam Emittance Measurements with Multi-Slit and Moving-Slit Devices for LEReC 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  
About • paper received ※ 01 September 2018       paper accepted ※ 12 September 2018       issue date ※ 29 January 2019  
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