SUMMARY OF COUPLING AND TUNE FEEDBACK RESULTS DURING RHIC RUN 6, AND POSSIBLE IMPLICATIONS FOR LHC COMMISSIONING.
Early efforts [1] to implement tune feedback during the acceleration ramp in RHIC were hampered by large betatron coupling, as well as the requirement for large dynamic range. Both problems have been addressed, the first by implementation of continuous measurement of coupling, and the second by the development of an improved analog front end. With these improvements, simultaneous coupling and tune feedback were successfully implemented for acceleration ramp development during RHIC Run 6. During the course of this work it became clear that direct excitation of the betatron resonances by high harmonics of the 60Hz power frequency was an obstacle to making the system fully operational. They report here on these results from RHIC Run 6, and implications for LHC commissioning.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 885006
- Report Number(s):
- BNL-75450-2006-CP; R&D Project: 18026; KB0202011; TRN: US0603748
- Resource Relation:
- Conference: EPAC 2006 - 10TH BIENNIAL EUROPEAN PARTICLE ACCELERATOR CONFERENCE; EDINBURGH, UK; 20060626 through 20060630
- Country of Publication:
- United States
- Language:
- English
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PROGRESS IN TUNE, COUPLING, AND CHROMATICITY MEASUREMENT AND FEEDBACK DURING RHIC RUN 7
Simultaneous Tune and Coupling Feedback during RHIC Run 6