Compensation of head-on beam-beam induced resonance driving terms and tune spread in the Relativistic Heavy Ion Collider

• Main Authors: W. Fischer, X. Gu, K. A. Drees, C. Liu, Y. Luo, A. Marusic, R. Michnoff, T. A. Miller, M. Minty, C. Montag, A. I. Pikin, G. Robert-Demolaize, V. Schoefer, P. Thieberger, S. M. White
• Format: Article
• Language: English
• Published: American Physical Society 2017-09-01
• Series: Physical Review Accelerators and Beams
• Online Access: http://doi.org/10.1103/PhysRevAccelBeams.20.091001
• ISSN: 2469-9888

A head-on beam-beam compensation scheme was implemented for operation in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory [Phys. Rev. Lett. 115, 264801 (2015)PRLTAO0031-900710.1103/PhysRevLett.115.264801]. The compensation consists of electron lenses for the reduction of the beam-beam induced tune spread, and a lattice for the minimization of beam-beam generated resonance driving terms. We describe the implementations of the lattice and electron lenses, and report on measurements of lattice properties and the effect of the electron lenses on the hadron beam.