Author: Ptitsyn, V.
Paper Title Page
TUIDCC002
eRHIC Multi-Pass ERL  
 
  • V. Ptitsyn
    BNL, Upton, Long Island, New York, USA
 
  The talk concentrates on accelerator physics and accelerator technology issues related with the multi-pass ERL of ERL-Ring design option of future high luminosity electron-hadron collider eRHIC. Possible solutions for recirculating passes are described which include individual loops as well as FFAG-type re-circulations. Major beam dynamics effects dominating the ERL performance are described, which include electron beam disruption, multi-pass beam-break-up, preservation of transverse emittance and energy spread during acceleration and deceleration process. The recent design modifications of ERL-Ring eRHIC aim to balance technological risks and the project cost.  
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WEIACC003 ER@CEBAF, a 7 Gev, 5-Pass, Energy Recovery Experiment 58
 
  • F. Méot, I. Ben-Zvi, Y. Hao, C. Liu, M.G. Minty, V. Ptitsyn, G. Robert-Demolaize, T. Roser, P. Thieberger, N. Tsoupas, C. Xu, W. Xu
    BNL, Upton, Long Island, New York, USA
  • M.E. Bevins, S.A. Bogacz, D. Douglas, C.J. Dubbé, T.J. Michalski, Y. Roblin, T. Satogata, M. Spata, C. Tennant, M.G. Tiefenback
    JLab, Newport News, Virginia, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract DE-AC02-98CH10886 with the U.S. DOE, Jefferson Science Associates, LLC under Contract DE-AC05-06OR23177 with the U.S. DOE.
A multiple-pass, high energy Energy Recovery Linac experiment at the JLab CEBAF will be instrumental in providing necessary information and technology testing for a number of possible future applications and facilities such as Linac-Ring based colliders, which have been designed at BNL (eRHIC) and CERN (LHeC), and also drivers for high-energy FELs and 4th GLS. The project has been submitted to, and has received approval from, JLab Program Advisory Committee (PAC 44) in July 2016. Since it was launched 2+ years ago, it has progressed in defining the experimental goals, including for instance multiple-beam instrumentation, ER efficiency, BBU, and the necessary modifications to CEBAF lattice, including for instance a 4-dipole phase chicane in recirculation Arc A, a dump line, and new linac optics. End-to-end simulations have been undertaken and software tools are under development. A next major objective in demonstrating readiness is a technical review as mandated by PAC 44. This paper gives a status of the project and its context, and presents plans for the near future.
 
slides icon Slides WEIACC003 [5.320 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2017-WEIACC003  
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WEICCC004 First Results of Commissioning DC Photo-Gun for RHIC Low Energy Electron Cooler (LEReC) 65
 
  • D. Kayran, Z. Altinbas, D. Bruno, M.R. Costanzo, A.V. Fedotov, D.M. Gassner, X. Gu, L.R. Hammons, P. Inacker, J.P. Jamilkowski, J. Kewisch, C.J. Liaw, C. Liu, K. Mernick, T.A. Miller, M.G. Minty, V. Ptitsyn, T. Rao, J. Sandberg, S. Seletskiy, P. Thieberger, J.E. Tuozzolo, E. Wang, Z. Zhao
    BNL, Upton, Long Island, New York, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
Non-magnetized bunched electron cooling of ion beams during low energy RHIC operation requires electron beam energy in the range of 1.6-2.6 MeV, with an average current up to 45 mA, very small energy spread, and low emittance. A 400 kV DC gun equipped with a photocathode and laser system will provide a source of high-quality electron beams. During DC gun test critical elements of LEReC such as laser beam system, cathode exchange system, cathode QE lifetime, DC gun stability, beam instrumentation, the high-power beam dump system, machine protection system and controls has been tested under near- operational conditions [1]. We present the status, experimental results and experience learned during the LEReC DC gun beam testing.
[1] D. Kayran et al., DC Photogun Gun Test for RHIC Low Energy Electron Cooler (LEReC), NAPAC2016 proceedings, WEPOB54.
 
slides icon Slides WEICCC004 [20.769 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ERL2017-WEICCC004  
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