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Jens Uhlig. Portrait.

Jens Uhlig

Senior lecturer

Jens Uhlig. Portrait.

Implementation of a crossed-slit system for fast alignment of sealed polycapillary X-ray optics

Author

  • Anna Zymakova
  • Krishna Khakurel Prasad
  • Alessandra Picchiotti
  • Wojciech Blachucki
  • Jakub Szlachetko
  • Mateusz Rebarz
  • Jens Uhlig
  • Jakob Andreasson

Summary, in English

A new modification of a table-Top laser-driven water-jet plasma X-ray source has been successfully implemented and commissioned at the Extreme Light Infrastructure (ELI) Beamlines user facility. In order to preserve the broadband nature of the source for spectroscopic experiments, a polycapillary lens was initially chosen as the focusing element. Generally, polycapillary X-ray optics have a narrow photon acceptance angle and small field of view, making alignment complicated and time-consuming. This contribution demonstrates a straightforward, reliable and reproducible procedure for aligning polycapillary focusing optics with broadband X-rays. The method involves a pre-Alignment step where two X-ray slits are mounted orthogonally on opposite sides of a 3D-printed cylindrical polycapillary holder. This helps to precisely determine the optical axis of the X-ray beam. Subsequent mounting of the polycapillary in the pre-Aligned holder with the slits removed allowed for immediate transmission of the X-ray photons through the optics and has provided a good starting point for fine alignment.

Department/s

  • Chemical Physics
  • NanoLund: Centre for Nanoscience

Publishing year

2020

Language

English

Pages

1730-1733

Publication/Series

Journal of Synchrotron Radiation

Volume

27

Document type

Journal article

Publisher

International Union of Crystallography

Topic

  • Subatomic Physics

Keywords

  • alignment
  • polycapillaries
  • X-ray focusing optics
  • X-ray slits
  • X-ray sources

Status

Published

ISBN/ISSN/Other

  • ISSN: 0909-0495