Chromaticity Correction for the SSC Collider Rings
The authors address the issue of correcting higher order chromaticities of the collider with one or more low {beta} insertions. The chromaticity contributed by the interaction regions (IRs) depends crucially on the maximum value of {beta} in the two IRs in a cluster, the phase advance between adjacent interaction points (IPs), and the choice of global tune. They propose a correction scheme in which the linear chromaticity is corrected by a global distribution of sextupoles and the second order chromaticity of each IR is corrected by a more local set of sextupoles. Compared to the case where only the linear chromaticity is corrected, this configuration increases the momentum aperture more than three times and also reduces the {beta} beat by this factor. With this scheme, the tune can be chosen to satisfy other constraints and the two IRs in a cluster can be operated independently at different luminosities without affecting the chromatic properties of the ring.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813303
- Report Number(s):
- SLAC-PUB-10050; TRN: US0303844
- Resource Relation:
- Other Information: PBD: 11 Jul 2003
- Country of Publication:
- United States
- Language:
- English
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