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Title	RHIC Performance with Stochastic Cooling for Ions and Head-on Beam-beam Compensation for Protons
Authors	W. Fischer, J.G. Alessi, Z. Altinbas, E.C. Aschenauer, G. Atoian, E.N. Beebe, S. Binello, I. Blackler, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, R. Connolly, M.R. Costanzo, T. D'Ottavio, K.A. Drees, A.V. Fedotov, C.J. Gardner, D.M. Gassner, X. Gu, C.E. Harper, M. Harvey, T. Hayes, J. Hock, H. Huang, R.L. Hulsart, J.P. Jamilkowski, T. Kanesue, N.A. Kling, J.S. Laster, C. Liu, Y. Luo, D. Maffei, Y. Makdisi, M. Mapes, G.J. Marr, A. Marusic, F. Méot, K. Mernick, R.J. Michnoff, T.A. Miller, M.G. Minty, C. Montag, J. Morris, G. Narayan, C. Naylor, S. Nemesure, M. Okamura, S. Perez, A.I. Pikin, P.H. Pile, A. Poblaguev, V. Ptitsyn, V.H. Ranjbar, D. Raparia, G. Robert-Demolaize, T. Roser, J. Sandberg, W.B. Schmidke, V. Schoefer, F. Severino, T.C. Shrey, K.S. Smith, D. Steski, S. Tepikian, R. Than, P. Thieberger, J.E. Tuozzolo, B. Van Kuik, G. Wang, K. Yip, A. Zaltsman, A. Zelenski, K. Zeno, W. Zhang BNL, Upton, Long Island, New York, USA M. Bai, Y. Dutheil FZJ, Jülich, Germany S.M. White ESRF, Grenoble, France
Abstract	The Relativistic Heavy Ion Collider (RHIC) has two main operating modes with heavy ions and polarized protons respectively. In addition to a continuous increase in the bunch intensity in all modes, two major new systems were completed recently mitigating the main luminosity limit and leading to significant performance improvements. For heavy ion operation stochastic cooling mitigates the effects of intrabeam scattering, and for polarized proton operation head-on beam-beam compensation mitigated the beam-beam effect. We present the performance increases with these upgrades for heavy ions and polarized protons, as well as an overview of all operating modes past and planned.
Funding	Work supported by U.S. DOE under contract No DE-AC02-98CH10886 with the U.S. Department of Energy.
Paper	download WEZA01.PDF [1.821 MB / 6 pages]
Slides	download WEZA01_TALK.PDF [12.687 MB]
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Conference	IPAC2016, Busan, Korea
Series	International Particle Accelerator Conference (7th)
Proceedings	Link to full IPAC2016 Proccedings
Session	Invited Oral Presentations, Circular and Linear Colliders
Date	11-May-16   14:00–15:00
Main Classification	01 Circular and Linear Colliders
Sub Classification	A01 Hadron Colliders
Keywords	luminosity, operation, electron, proton, ion
Publisher	JACoW, Geneva, Switzerland
Editors	Christine Petit-Jean-Genaz (CERN, Geneva, Switzerland); Dong Eon Kim (PAL, Pohang, Republic of Korea); Kyung Sook Kim (PAL, Pohang, Republic of Korea); In Soo Ko (POSTECH, Pohang, Republic of Korea); Volker RW Schaa (GSI, Darmstadt, Germany)
ISBN	978-3-95450-147-2
Published	June 2016
Copyright	Copyright © 2016 by JACoW, Geneva, Switzerland     cc Creative Commons Attribution 3.0