FNAL-E-0901()
Fermilab Electron Cooling Project
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- Proposed: Nov 14, 1997,
- Approved: Nov 14, 1997,
- Started: Mar 1, 2001,
- Completed: May 31, 2004
In all scenarios of the possible Tevatron upgrades, luminosity is essentially proportional to the number of stored antiprotons. The role of the Recycler ring is to provide more antiprotons by using it as a high-reliability post-accumulator, receiving recycled antiprotons from the previous store as well as antiprotons from the Accumulator. In order to efficiently cool antiprotons recycled from the Tevatron Collider and fight intrabeam scattering during storage, electron cooling is desired. Fermilab has undertaken an R&D program in medium energy electron cooling focused on accumulating 8.9 GeV/c antiprotons in the Recycler. The cooling of ion beams by a co-moving low emittance electron beam is a well-established technique for nuclear physics facilities with energies up to hundreds of MeV per nucleon. Despite slower cooling at higher energy, electron cooling promises major enhancement in the performance of high energy colliders as well. Three projects are being currently developed. They are FNAL project for the electron cooling of 8 GeV antiprotons, DESY (Hamburg, Germany) project for cooling protons in PETRA ring at 20 GeV (click here to download a PDF file), and GSI (Darmstadt, Germany) project for cooling of heavy ions for a future electron-ion collider. The Fermilab project is the first attempt at acheiving medium energy electron cooling. Previous electron cooling systems were built at an order of magnitude lower beam energy.
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