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TY - UNPB AU - Skrinsky, A.N. AU - Parkhomchuk, V.V. AU - Reva, V.B. ED - Akers, Evelyn (Jefferson Lab), Satogata, Todd Satogata (Jefferson Lab), Schaa, Volker RW Schaa (GSI) TI - High Luminosity Electron-Proton (Ion) Colliders J2 - Proc. of COOL2015, Newport News, VA, USA, September 28 - October 2, 2015 C1 - Newport News, VA, USA T2 - International Workshop on Beam Cooling and Related Topics T3 - 10 LA - english AB - At Budker INP, we consider now possibility to reach interesting enough cooling times for 100 GeV range proton (ion) beams, using single pass electron beam with parameters, which are now in operation for Novosibirsk free electron lasers. To reach good electron cooling for high energy protons, it is necessary to get effective electron beam angular spread smaller than angular spread in proton beam. This requires to immerse electron beam in co-linear longitudinal magnetic field. It is assumed ' "large" proton amplitudes would be cooled with stochastic cooling, but the small amplitudes core would be cooled with appropriate electron beam, produced similar way as for our FEL. For higher charge ions to reach acceptable cooling rate is even easier. PB - JACoW CP - Geneva, Switzerland ER -