Paper | Title | Page |
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MPPE062 | Measurement and Optimization of Local Coupling from RHIC BPM Data | 3553 |
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Funding: U.S. Department of Energy. Global coupling in RHIC is routinely corrected by using three skew quadrupole families to minimize the tune split. In this paper we aim to re-optimize the coupling at top energy by minimizing resonance driving terms and the C-matrix in two steps: 1. Find the best configuration of the three skew quadrupole families and 2. Identify locations with coupling sources by inspection of the driving terms and the C-matrix around the ring. The measurements of resonance terms and C-matrix are presented. |