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THBP26 |
Applying the Low Energy RHIC Electron Cooler (LEReC) Concept to the High Energy Coolers | |
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Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Electron cooling is a method to achieve high brightness of hadron beams by reducing emittances of the hadrons. Traditionally, electron coolers based on electrostatic accelerators have been used for low-energy hadron beams. However, this technique is limited by the electron beam energy. RF acceleration of electron bunches enables electron cooling for hadron beams at energies of tens or even hundreds of GeV. A novel electron cooler using RF acceleration (LEReC) was successfully implemented at Brookhaven National Laboratory*. LEReC provided cooling for gold ions at 3.8 and 4.5 GeV/n during the RHIC Low Energy Scan -II, using electron acceleration up to 2 MeV energy. A successful demonstration of cooling using LEReC approach allows us to consider a similar technique for higher energies. An electron cooler for the injection energy of the Electron Ion Collider (EIC) is currently under design, which aims to provide strong cooling for protons at 24 GeV. This requires a high-quality electron beam with a high charge and an energy of 13 MeV. In this report, we present LEReC operational experience and discuss the path forward to the 13 MeV electron cooler for the EIC. * A. Fedotov et al., Experimental Demonstration of Hadron Beam Cooling Using Radio Frequency Accelerated Electron Bunches, Phys. Rev. Lett. 124, 084801 (2020). |
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