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Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)
Total stored electron and positron beam currents at the Cornell Electron Storage Ring (CESR) have been limited by the presence of a dipole multibunch longitudinal instability having a threshold at approximately 250mA of total current. A longitudinal feedback system has been under constant development, test, operation and upgrade over the past several years. The result has been an increase in the High Energy Physics (HEP) operating current to over 500mA total. This paper describes the overalldoi:10.1109/pac.1999.795466 fatcat:7d32wkfad5c2njgrhyax5gpepe