| Paper |
Title |
Page |
| THPLT141 |
Operational Experience Integrating Slow and Fast Orbit Feedbacks at the ALS
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2783 |
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- C. Steier, E.E. Domning, T. Scarvie, E. Williams
LBNL, Berkeley, California
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A fast global orbit feedback system has been implemented at the ALS and is being used during user operation since this year. The system has two main purposes. The first is to meet the demands of some users for even improved (submicron) short term orbit stability. The second is to enable the use of more sophisticated insertion device compensation schemes (e.g. tune, beta-beating, coupling) for fast moving insertion devices like elliptically polarizing undulators, without deteriorating the orbit stability. The experience of routine user operation with the fast orbit feedback will be presented, as well as the overall feedback performance and how the integration issues with the already existing slow orbit feedback were solved.
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