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TY - UNPB AU - Zhang, Y. AU - Benson, S.V. AU - Hutton, A. AU - Jordan, K. AU - Li, J. AU - Ma, X.M. AU - Mao, L.J. AU - Powers, T. AU - Rimmer, R.A. AU - Spata, M.F. AU - Sy, A.V. AU - Tang, M.T. AU - Wang, H. AU - Wang, S. AU - Yang, J.C. AU - Yang, X.D. AU - Zhang, H. AU - Zhao, H. AU - Zhao, H.W. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Experimental and Simulation Studies of Cooling of a Bunched Ion Beam in a Storage Ring by a Bunched Electron Beam J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Cooling of a high energy ion beam is essential for future electron-ion colliders to reach high luminosity. It is critical to demonstrate experimentally cooling by a bunched electron beam and to benchmark the experimental data with simulations. Such experimental and simulation studies were carried out by a collaboration of Jefferson Lab and Institute of Modern Physics (IMP), utilizing a DC cooler at IMP. The thermionic gun of the DC cooler was modified by pulsing its grid voltage to produce cooling electron pulses in a pulse length range of 0.07 - 3.5 µs, with a 250 kHZ repetition frequency. The performed experiments clearly demonstrated cooling of a RF focused ion bunches by this pulsed electron beam. The momentum spread of cooled ion bunch has been reduced from ~2x10⁻³ to ~6x10-4 in less than 0.5 second. The simulation results agree with the measurements qualitatively. In this paper, we present a brief overview of the experiments and also show the main experimental and simulation results. PB - JACoW Publishing CP - Geneva, Switzerland ER -