Integrated Global Orbit Feedback with Slow and Fast Correctors

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The NSLS-II Light Source, which is planned to be built at Brookhaven National Laboratory, provides users with ultra-bright synchrotron radiation sources and is designed for horizontal beam emittances < 1 nm. Full utilization of the very small emittances and beam sizes requires sub-micron orbit stability in the storage ring. This can be provided by means of a wide bandwidth orbit feedback system. Traditional approach is to utilize a uniform set of fast correctors or use two separate systems with strong slow and weaker fast correctors. In the latter case two systems needed to communicate to suppress transients associated with different ... continued below

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Pinayev,I. June 23, 2008.

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The NSLS-II Light Source, which is planned to be built at Brookhaven National Laboratory, provides users with ultra-bright synchrotron radiation sources and is designed for horizontal beam emittances < 1 nm. Full utilization of the very small emittances and beam sizes requires sub-micron orbit stability in the storage ring. This can be provided by means of a wide bandwidth orbit feedback system. Traditional approach is to utilize a uniform set of fast correctors or use two separate systems with strong slow and weaker fast correctors. In the latter case two systems needed to communicate to suppress transients associated with different update rates of corrector settings. In this paper they consider an integrated system with two types of correctors. Its main feature is that setpoints of slow correctors are updated with the same rate as fast correctors; however the bandwidth is limited in order to stay in linear regime. Possible architectures and technical solutions as well as achievable performance are discussed.

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  • 11th European Particle Accelerator Conference (EPAC 2008); Genoa, Italy; 20080623 through 20080627

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  • Report No.: BNL--81636-2008-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 939959
  • Archival Resource Key: ark:/67531/metadc897273

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  • June 23, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 1, 2016, 4:59 p.m.

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Pinayev,I. Integrated Global Orbit Feedback with Slow and Fast Correctors, article, June 23, 2008; United States. (digital.library.unt.edu/ark:/67531/metadc897273/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.