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TY - UNPB AU - Fedotov, A.V. AU - Blaskiewicz, M. AU - Drees, K.A. AU - Fischer, W. AU - Gu, X. AU - Kayran, D. AU - Kewisch, J. AU - Liu, C. AU - Marusic, A. AU - Mernick, K. AU - Minty, M.G. AU - Ptitsyn, V. AU - Robert-Demolaize, G. AU - Schoefer, V. AU - Seletskiy, S. AU - Thieberger, P. AU - Zhao, H. ED - Schaa, Volker RW TI - First Demonstration of Electron Cooling in a Collider J2 - Proc. of IPAC2020, Caen, France, 10-15 May 2020 CY - Caen, France T2 - International Particle Accelerator Conference T3 - 11 LA - english AB - High-energy electron cooling is being considered for several accelerator physics projects worldwide, including various designs of an Electron Ion Collider. Since accelerating dc electron beams above few MeV is technologically challenging, rf-acceleration of electron bunches becomes more practical for high-energy applications. A world’s first electron cooling of ion beams employing such rf-accelerated electron bunches was recently demonstrated at BNL using the Low Energy RHIC electron Cooler (LEReC). Many challenges associated with such an approach were successfully overcome. The cooling task becomes even more challenging when one attempts to cool ion beams in collisions, requiring careful optimization between the electron cooling process and the ion beam lifetime due to various effects, including the beam-beam interactions. In this paper, we discuss first successful application of electron cooling for colliding ion beams in RHIC, as well as requirements and challenges of electron cooling in a collider. PB - JACoW Publishing CP - Geneva, Switzerland ER -