NATIONAL LABORATORY Study of electron-proton beam-beam interaction in eRHllC Y. Hao, V.N. Litvinenko, C. Montag, E. Pozdeyev, V. Ptitsyn Presented at the 22nd Particle Accelerator Conference (PAC) Albuquerque, New Mexico June 25 - 29,2007 Collider-Accelerator Department Brookhaven National Laboratory P.O. Box 5000 Upton, NY 11973-5000 www.bnl.gov Notice: This manuscript has been authored by employees of Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The publisher by accepting the manuscript for publication acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. This preprint is intended for publication in a journal or proceedings. Since changes may be made before publication, it may not be cited or reproduced without the author's permission.