Polarization Analysis for Seeded FELs in a Crossed-Planar Undulator

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The crossed-planar undulator is a promising scheme for full polarization control in x-ray FELs. For SASE FELs, it has been shown a maximum degree of circular polarization of about 80% is achievable at fundamental wavelength just before saturation. In this paper, we study the effectiveness of a crossed undulator for a seeded x-ray FEL. The degree of circular polarization for both the fundamental and the harmonic radiation are considered. Simulations with realistic beam distributions show that a degree of circular polarization of over 90% and 80% is obtainable at the fundamental and 2nd harmonic frequencies, respectively.

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Geng, Huiping; /SLAC; Ding, Yuantao; /SLAC; Huang, Zhirong; /SLAC et al. June 25, 2012.

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The crossed-planar undulator is a promising scheme for full polarization control in x-ray FELs. For SASE FELs, it has been shown a maximum degree of circular polarization of about 80% is achievable at fundamental wavelength just before saturation. In this paper, we study the effectiveness of a crossed undulator for a seeded x-ray FEL. The degree of circular polarization for both the fundamental and the harmonic radiation are considered. Simulations with realistic beam distributions show that a degree of circular polarization of over 90% and 80% is obtainable at the fundamental and 2nd harmonic frequencies, respectively.

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http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-15115.html

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  • Journal Name: Conf.Proc.C100523:TUPE068,2010; Conference: 1st International Particle Accelerator Conference: IPAC'10, 23-28 May 2010, Kyoto, Japan

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  • Report No.: SLAC-PUB-15115
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1044624
  • Archival Resource Key: ark:/67531/metadc842954

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  • June 25, 2012

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  • May 19, 2016, 9:45 a.m.

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  • June 20, 2016, 9:20 p.m.

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Geng, Huiping; /SLAC; Ding, Yuantao; /SLAC; Huang, Zhirong; /SLAC et al. Polarization Analysis for Seeded FELs in a Crossed-Planar Undulator, article, June 25, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc842954/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.