Coherent Electron Cooling in High Energy Hadron Colliders

by Mr Vladimir N. Litvinenko (Brookhaven National Laboratory (USA))

Thursday 13 Mar 2008, 11:00 → 12:00 Europe/Zurich

AB Auditorium Meyrin (CERN)

Cooling intense high-energy hadron beams remains a major challenge in modern accelerator physics. Synchrotron radiation is still too feeble, while efficiency of two other cooling methods -stochastic and electron - falls rapidly at high energies. In this talk a specific scheme of unique cooling technique - Coherent Electron Cooling will be discussed. The idea of coherent electron cooling using electron beam instabilities was suggested by Derbenev in early 1980s. But the scheme presented in this talk - with cooling times under an hour for 7 TeV protons in LHC - would be possible only with present-day accelerator technology.

In this talk, I will discuss the principles, and the main limitations of the Coherent Electron Cooling process. I will describe the main components of the system based on a high- gain free-electron laser driven by an energy recovery linac. I will present some numerical examples for ions and protons in RHIC and the LHC and for electron-hadron option for these colliders.

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