Design Studies of High-Luminosity Ring-Ring Electron-Ion Collider at CEBAF

Conference · Tue Jul 01 04:00:00 EDT 2008

OSTI ID:1962518

Bogacz, Slawomir ^[1]; Brindza, Paul ^[2]; Bruell, Antje ^[3]; Derbenev, Yaroslav ^[1]; Ent, Rolf ^[1]; Krafft, Geoffrey ^[1]; Merminga, Nikolitsa ^[4]; Musson, John ^[1]; Wojtsekhowski, Bogdan ^[1]; Yunn, Byung ^[1]; Zhang, Yuhong ^[1]; Li, Rui ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2. Old Dominion Univ., Norfolk, VA (United States)
3. Deutsche Forschungsgemeinschaft (DFG), Germany
4. Fermi National Accelerator Laboratory, Batavia, IL

An electron-ion collider of a center-of-mass energy up to 90 GeV at luminosity up to 1035 cm-2s-1 with both beams highly polarized is essential for exploring the new QCD frontier of strong color fields in nuclear and precisely imaging the sea-quarks and gluons in the nucleon. A conceptual design of a ring-ring collider based on CEBAF (ELIC) with energies up to 9 GeV for electrons/positrons and up to 225 GeV for protons and 100 GeV/u for ions has been proposed to fulfill the science desire and to serve as the next step for CEBAF after the planned 12 GeV energy upgrade of the fixed target program. Here, we summarize recent design progress for the ELIC complex with four interaction points (IP); including interaction region optics with chromatic aberration compensation scheme and complete lattices for the Figure-8 collider rings. Further optimization of crab crossing angles at the IPs, simulations of beam-beam interactions, and electron polarization in the Figure-8 ring and its matching at the IPs are also discussed.

• 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: 1962518
• Report Number(s): JLAB-ACP-08-781; DOE/OR/23177-5818
• Country of Publication: United States
• Language: English