OPERATIONAL MEASUREMENT OF COUPLING BY SKEW QUADRUPOLE MODULATION.
The measurement and correction of the residual betatron coupling via skew quadrupole modulation is a new diagnostics technique that has been developed and tested at the Relativistic Heavy Ion Collider (RHIC) as a very promising method for the linear decoupling on the ramp. By modulating the strengths of the skew quadrupole families the two eigentune modulations are precisely measured with a high resolution phase lock loop system. The projections of the residual coupling coefficient onto the skew quadrupole coupling modulation direction are determined. The residual linear coupling could be corrected according the measurement. We report the results from the dedicated beam studies carried on at RHIC injection, store and on the ramp. A capability of measuring coupling on the ramp opens possibility of continuous coupling corrections during acceleration.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/OFFICE OF SCIENCE (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15007988
- Report Number(s):
- BNL-72047-2004-CP; R&D Project: AD-002-ADOP; KB020204; TRN: US0402937
- Resource Relation:
- Conference: 2004 EUROPEAN PARTICLE ACCELERATOR CONFERENCE (EPAC-04), LUCERNE (CH), 07/05/2004--07/09/2004; Other Information: PBD: 5 Jul 2004
- Country of Publication:
- United States
- Language:
- English
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