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Development of a multi-lane X-ray mirror providing variable beam sizes.

D Laundy1, K Sawhney1, I Nistea1

  • 1Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom.

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Summary
This summary is machine-generated.

Researchers developed a novel concept for rapidly changing X-ray beam size and shape using specially designed grazing incidence mirrors. This innovation offers flexible beam control for synchrotron applications.

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Area of Science:

  • Optics and X-ray instrumentation
  • Materials science
  • Synchrotron radiation applications

Background:

  • Grazing incidence mirrors are essential components in X-ray synchrotron beamlines for focusing, collimating, and harmonic suppression.
  • There is a growing demand from synchrotron users for variable X-ray beam shapes and sizes at the sample position.

Purpose of the Study:

  • To develop a new concept for rapidly altering the size and shape of a focused X-ray beam.
  • To enable flexible and on-demand beam control for synchrotron experiments.

Main Methods:

  • The developed concept utilizes an elliptically figured mirror with a surface divided into laterally separated lanes.
  • Each lane features an additional longitudinal height profile, precisely calculated to shape the X-ray beam into a top-hat profile in the focal plane.
  • Two prototype mirrors were fabricated and subjected to metrology tests and in-situ measurements on a synchrotron beamline.

Main Results:

  • Metrology tests confirmed the precise surface profiles of the fabricated mirrors.
  • Measurements on a synchrotron beamline demonstrated the effective focusing and shaping of the X-ray beam.
  • The results validate the 'top-hat' beam profile generation capability.

Conclusions:

  • The novel concept of segmented, height-profiled grazing incidence mirrors allows for rapid switching of X-ray beam sizes and shapes.
  • This technology has the potential for widespread application across numerous synchrotron beamlines requiring dynamic beam control.
  • The developed mirrors offer a practical solution for enhancing experimental flexibility at synchrotrons.