Latest Results on Cavity Gradient and Input RF Stability at FLASH/TTF Facility

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The FLASH L-band (1.3 GHz) superconducting accelerator facility at DESY has a Low Level RF (LLRF) system that is similar to that envisioned for ILC. This system has extensive monitoring capability and was used to gather performance data relevant to ILC. Recently, waveform data were recorded with both beam on and off for three, 8-cavity cryomodules to evaluate the input RF and cavity gradient stability and study the rf overhead required to achieve constant gradient during the 800 {micro}s pulses. In this paper, we present the recent experimental results and discuss the pulse-to-pulse input rf and cavity gradient stability for ... continued below

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7 pages

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Pei, Shilun; Adolphsen, Chris E.; /SLAC; Carwardine, John; /Argonne; Walker, Nicholas John et al. August 25, 2010.

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The FLASH L-band (1.3 GHz) superconducting accelerator facility at DESY has a Low Level RF (LLRF) system that is similar to that envisioned for ILC. This system has extensive monitoring capability and was used to gather performance data relevant to ILC. Recently, waveform data were recorded with both beam on and off for three, 8-cavity cryomodules to evaluate the input RF and cavity gradient stability and study the rf overhead required to achieve constant gradient during the 800 {micro}s pulses. In this paper, we present the recent experimental results and discuss the pulse-to-pulse input rf and cavity gradient stability for both the beam on and off cases. In addition, a model of the gradient variation observed in the beam off case will be described.

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7 pages

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  • Journal Name: Conf.Proc.C100523:TUPEA059,2010; Conference: 1st International Particle Accelerator Conference: IPAC'10, 23-28 May 2010, Kyoto, Japan

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  • Report No.: SLAC-PUB-14141
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 992974
  • Archival Resource Key: ark:/67531/metadc1013013

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  • August 25, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Nov. 2, 2017, 8:13 p.m.

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Pei, Shilun; Adolphsen, Chris E.; /SLAC; Carwardine, John; /Argonne; Walker, Nicholas John et al. Latest Results on Cavity Gradient and Input RF Stability at FLASH/TTF Facility, article, August 25, 2010; [California]. (digital.library.unt.edu/ark:/67531/metadc1013013/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.