Operating Performance of the Low Group Delay Woofer Channel in PEP-II

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In PEP-II collider a dedicated low group-delay processing channel has been developed in order to provide high damping rates necessary to control the fast-growing longitudinal eigen modes driven by the fundamental impedances of the RF cavities. A description of the digital processing channel operating at 9.81 MHz and capable of supporting finite impulse response (FIR) controllers with up to 32 taps will be presented. A prototype system has been successfully commissioned in the High-Energy Ring (HER) in May 2004. Operating experiences with the prototype and the newly determined limits on achievable longitudinal damping will be discussed and illustrated with experimental ... continued below

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3 pages

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Teytelman, D; Van Winkle, D.; Fox, J. & /SLAC June 22, 2005.

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Description

In PEP-II collider a dedicated low group-delay processing channel has been developed in order to provide high damping rates necessary to control the fast-growing longitudinal eigen modes driven by the fundamental impedances of the RF cavities. A description of the digital processing channel operating at 9.81 MHz and capable of supporting finite impulse response (FIR) controllers with up to 32 taps will be presented. A prototype system has been successfully commissioned in the High-Energy Ring (HER) in May 2004. Operating experiences with the prototype and the newly determined limits on achievable longitudinal damping will be discussed and illustrated with experimental data.

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3 pages

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  • Contributed to Particle Accelerator Conference (PAC 05), Knoxville, Tennessee, 16-20 May 2005

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  • Report No.: SLAC-PUB-11253
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 890302
  • Archival Resource Key: ark:/67531/metadc883887

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  • June 22, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 30, 2016, 2:44 p.m.

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Teytelman, D; Van Winkle, D.; Fox, J. & /SLAC. Operating Performance of the Low Group Delay Woofer Channel in PEP-II, article, June 22, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc883887/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.