Development of a bunched beam electron cooler for the Jefferson Lab electron-ion collider

Conference · Sun Jul 01 00:00:00 EDT 2018

DOI:https://doi.org/10.18429/JACoW-IPAC2018-MOPMK015· OSTI ID:1471228

Benson, Stephen V. ^[1]; Derbenev, Yaroslav S. ^[1]; Douglas, David R. ^[1]; Hannon, Fay ^[1]; Hutton, Andrew M. ^[1]; Li, Rui ^[1]; Rimmer, Robert A. ^[1]; Roblin, Yves R. ^[1]; Tennant, Christopher D. ^[1]; Wang, Haipeng ^[1]; Zhang, He ^[1]; Zhang, Yuhong ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Jefferson Lab is in the process of designing an electron-ion collider with unprecedented luminosity at a 65 GeV center-of-mass energy. This luminosity relies on ion cooling in both the booster and the storage ring of the accelerator complex. The cooling in the booster will use a conventional DC cooler similar to the one at COSY. The high-energy storage ring, operating at a momentum of up to 100 GeV/nucleon, requires novel use of bunched-beam cooling. We will present a new design for a Circulator Cooler Ring for bunched-beam electron cooling. This requires the generation and transport of very high-charge magnetized bunches, acceleration of the bunches in an energy recovery linac, and transfer of these bunches to a circulating ring that passes the bunches 11 times through the proton or ion beam inside cooling solenoids. This design requires the suppression of the effects of space charge and coherent synchrotron radiation using shielding and RF compensation.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1471228
• Report Number(s): JLAB-ACP-18-2732; DOE/OR/23177-4460
• Country of Publication: United States
• Language: English