| Paper |
Title |
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| MOA1I01 |
Bunched Beam Stochastic Cooling at RHIC
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25 |
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- J. M. Brennan, M. Blaskiewicz
BNL, Upton, Long Island, New York
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Stochastic cooling of ions in RHIC has been implemtneted to counteract Intra-Beam Scattering and prevent debunching during stores for luminosity production. The two main challenges in cooling bunched beam at 100 GeV/n are the coherent components in the Schottky spectra and producing the high voltage for the kicker in the 5 - 8 GHz band required for optimal cooling. The technical solutions to these challenges are described. Results of cooling proton beam in a test run and cooling gold ions in the FY07 production run are presented.
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Slides
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| WEM1C02 |
Optical Stochastic Cooling Experiment at the MIT-Bates South Hall Ring
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117 |
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- W. A. Franklin, K. A. Dow, J. P. Hays-Wehle, F. X. Kaertner, R. Milner, R. P. Redwine, A. M. Siddiqui, C. Tschalaer, E. Tsentalovich, D. Wang, F. Wang, J. van der Laan
MIT, Middleton, Massachusetts
- M. Bai, M. Blaskiewicz, W. Fischer, B. Podobedov, V. Yakimenko
BNL, Upton, Long Island, New York
- W. A. Barletta, A. Zholents, M. S. Zolotorev
LBNL, Berkeley, California
- S.-Y. Lee
IUCF, Bloomington, Indiana
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An experiment to demonstrate for the first time the principle of optical stochastic cooling* has been proposed using electrons at 300 MeV in the MIT-Bates South Hall Ring. The experiment will operate the Ring in a dedicated mode using a lattice tailored for transverse and longitudinal cooling. The experimental apparatus, including a magnetic chicane, undulator system, and ultrafast optical amplifier, has been designed to be compatible with existing technology. The experiment will study OSC physics to evaluate its prospects for future application at the high energy high brightness frontier and to develop deterministic diagnostics needed to achieve it. Details of the experiment design will be presented along with results from an initial beam feasibility study.
*M. Zolotorev and A. Zholents, Phys. Rev. E 50, 3087 (1994)
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Slides
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| WEM2I05 |
Bunched Beam Stochastic Cooling Simulations and Comparison with Data
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125 |
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- M. Blaskiewicz, J. M. Brennan
BNL, Upton, Long Island, New York
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Funding: Work performed under the auspices of the United States Department of Energy.
With the experimental success of longitudinal, bunched beam stochastic cooling in RHIC it is natural to ask whether the system works as well as it might and whether upgrades or new systems are warranted. A computer code, very similar to those used for multi-particle coherent instability simulations, has been written and is being used to address these questions.
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