Electron Ion Collider Strong Hadron Cooling Injector and ERL

Conference · Mon Aug 01 04:00:00 EDT 2022

DOI:https://doi.org/10.18429/JACoW-LINAC2022-MO2AA04· OSTI ID:1906363

Wang, E. ^[1]; Bergan, W. F. ^[1]; Willeke, F. J. ^[1]; Benson, S. V. ^[2]; Deitrick, K. E. ^[2]; Douglas, D. ^[3]; Gulliford, C. M. ^[4]; Mayes, C. E. ^[5]; Taylor, N. F. ^[5]; Qiang, J. ^[6]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)
2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
3. Douglas Consulting, York, Virginia, USA
4. Cornell Univ., Ithaca, NY (United States)
5. Xelera Research LLC, Ithaca, New York, USA
6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Intra-beam Scattering (IBS) and other diffusion mechanisms in the EIC Hadron Storage Ring (HSR) degrade the beam emittances during a store, with growth times of about 2 hours at the nominal proton energies of 275GeV, 100 GeV, and 41 GeV. Strong Hadron Cooling (SHC) can maintain good hadron beam quality and high luminosity during long collision stores. A novel cooling method ’ Coherent electron Cooling (CeC) ’ is chosen as the baseline SHC method, due to its high cooling rates. An Energy Recovery Linac (ERL) is used to deliver an intense high-quality electron beam for cooling. In this paper, we discuss the beam requirements for SHC-CeC and describe the current status of the injector and ERL designs. Two designs of injector and ERL will be presented: one for dedicated SHC and another one for SHC with precooler.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1906363
• Report Number(s): JLAB-ACP-22-3725; DOE/OR/23177-5617
• Country of Publication: United States
• Language: English