Author: Pekrul, W.E.
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Coherent Electron Cooling Diagnostics: Design Principles and Demonstrated Performance  
  • I. Pinayev, J.C.B. Brutus, D.M. Gassner, R.L. Hulsart, P. Inacker, V. Litvinenko, R.J. Michnoff, T.A. Miller, M.C. Paniccia, W.E. Pekrul, Z. Sorrell, J.E. Tuozzolo
    BNL, Upton, Long Island, New York, USA
  The Coherent electron Cooling (CeC) Proof of Principle Experiment at Brookhaven National Laboratory utilizes a 14 MeV CW electron accelerator and an FEL structure to demonstrate longitudinal cooling of gold ions circulating in the Relativistic Heavy Ion Collider. This unique combination requires proper selection of the diagnostics devices and their parameters. In this paper we present how we transformed design beam parameters into specifications for the instrumentation and hardware configuration. We also have developed tools enhancing diagnostics capabilities including solenoid beam-based alignment and in-line energy measurement. The achieved beam parameters as well as instrument performance are also shown.  
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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.  
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