Transmission Grating Measurements of Undulator K

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This study was undertaken to understand the practicalities of determine K differences in the undulator modules by measuring single-shot x-ray spectra of the spontaneous radiation with a transmissive grating spectrometer under development to measure FEL spectra. Since the quality of the FEL is dependent on a uniform K value in all the undulator modules, being able to measure the relative undulator K values is important. Preliminary results were presented in a presentation, ''Use of FEL Off-Axis Zone Plate Spectrometer to Measure Relative K by the Pinhole/Centroid Method'', at the ''LCLS Beam-Based Undulator K Measurements Workshop'' on November 14, 2005 (UCRL-PRES-217281). ... continued below

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Bionta, R M & Ott, L L May 15, 2006.

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Description

This study was undertaken to understand the practicalities of determine K differences in the undulator modules by measuring single-shot x-ray spectra of the spontaneous radiation with a transmissive grating spectrometer under development to measure FEL spectra. Since the quality of the FEL is dependent on a uniform K value in all the undulator modules, being able to measure the relative undulator K values is important. Preliminary results were presented in a presentation, ''Use of FEL Off-Axis Zone Plate Spectrometer to Measure Relative K by the Pinhole/Centroid Method'', at the ''LCLS Beam-Based Undulator K Measurements Workshop'' on November 14, 2005 (UCRL-PRES-217281). This study applies equally well to reflective gratings of the appropriate period and inclinations.

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PDF-file: 16 pages; size: 0.3 Mbytes

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  • Report No.: UCRL-TR-221499
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/899383 | External Link
  • Office of Scientific & Technical Information Report Number: 899383
  • Archival Resource Key: ark:/67531/metadc879429

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  • May 15, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 9, 2016, 7:29 p.m.

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Bionta, R M & Ott, L L. Transmission Grating Measurements of Undulator K, report, May 15, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc879429/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.