An off-axis zone-plate monochromator for high-power undulator radiation

M. R. Howells, P. Charalambous, H. He, S. Marcesini, John Spence

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


We report the design and construction of an off-axis zone-plate monochromator for diffraction-imaging experiments at beam line 9.0.1 at the Advanced Light Source (ALS) synchrotron-radiation facility at Berkeley USA. The device is based on an off-axis zone plate which can be conveniently inserted into or retracted from the beam. We discuss design issues such as the efficiency and spectral purity of the system and the technique for designing heat-tolerant windows for soft x-ray undulator beams. The monochromator functions successfully and good-quality diffractions patterns are being made with the beam it delivers.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsD.C. Mancini
Number of pages9
StatePublished - 2002
EventDesign and Microfabrication of Novel X-Ray Optics - Seattle, WA, United States
Duration: Jul 9 2002 → …


OtherDesign and Microfabrication of Novel X-Ray Optics
Country/TerritoryUnited States
CitySeattle, WA
Period7/9/02 → …


  • Diffraction imaging
  • Monochromator
  • Undulator
  • Zone plate

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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