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Yunn, B.

Paper Title Page
MOAO06

 The Concepts for ELIC- a High Luminosity CEBAF based Electron-Light Ion Collider 

  • Ya.Derbenev, A. Bogacz, G. Krafft, R. Li, L. Merminga, B. Yunn, Y. Zhang
    Jefferson Laboratory, USA

    A CEBAF accelerator based electron-light ion collider of c.m. energy from 20 to 65 GeV and luminosity from 1033 to1035 cm-2 s-1 with both beams polarized is envisioned as a future upgrade to CEBAF. The concept of luminosity of ELIC has been established based on high energy electron cooling (HEEC), short ion bunches, very strong focus at interaction point, use of crab-crossing as a way to achieve very high bunch collision rate, and stacking an intense polarized ion beam while overcoming the space charge at injection to booster. Two steps upgrade scenario is under study: CEBAF accelerator-ring - ring scheme as the first step, and a multi-turn ERL - ring as the second step, to attain a better electron emittance and maximum luminosity. The spin polarization of both beams and HEEC schemes will be discussed and illustrated, and numerical examples will be presented.

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