LINEAR COUPLING CORRECTION WITH N-TURN MAPS.
The linear one-turn map of a storage ring contains coupling information on which a correction algorithm can be based. In principal, the one-turn matrix can be fitted from turn-by-turn data of beam position monitors after a kick was applied. However, the so obtained coupling information often sinks into the noise floor. The signal-to-noise ratio of the coupling information can be greatly enhanced by fitting maps for larger turn numbers N, equal to half the beat period. With the so obtained N-turn map an automated global coupling correction is possible without the need for a tune change. This is demonstrated for the Relativistic Heavy Ion Collider where the algorithm is implemented for operational use at injection.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/SC (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15006656
- Report Number(s):
- BNL-69622-CP; R&D Project: AD003; KB0202011; TRN: US0400881
- Resource Relation:
- Conference: 2003 PARTICLE ACCELERATOR CONFERENCE, PORTLAND, OR (US), 05/12/2003--05/16/2003; Other Information: PBD: 12 May 2003
- Country of Publication:
- United States
- Language:
- English
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A method for simultaneous linear optics and coupling correction for storage rings with turn-by-turn beam position monitor data
A method for simultaneous linear optics and coupling correction for storage rings with turn-by-turn beam position monitor data