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High Pressure Single Crystal Diffraction at PX^2
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High-precision soft x-ray polarimeter at Diamond Light Source.

H Wang1, S S Dhesi, F Maccherozzi

  • 1Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom. Hongchang.wang@diamond.ac.uk

The Review of Scientific Instruments
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

A new high-precision polarimeter enables detailed soft x-ray polarization analysis. This versatile instrument, with sub-5 μrad resolution, aids optical element characterization and synchrotron beamline measurements.

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Area of Science:

  • Soft X-ray Optics
  • Synchrotron Radiation Instrumentation
  • Polarimetry

Background:

  • Accurate polarization analysis is crucial for understanding soft x-ray interactions.
  • Existing instrumentation may lack the precision or versatility required for advanced studies.
  • Characterizing polarization states is essential for optimizing experiments at synchrotron facilities.

Purpose of the Study:

  • To develop and present a high-precision polarimeter for soft x-ray applications.
  • To demonstrate the instrument's capability for versatile polarization analysis.
  • To enable characterization of optical elements and undulator performance.

Main Methods:

  • A novel polarimeter design featuring a hexapod mount for precise alignment (resolution < 5 μrad).
  • Integration of a W/B(4)C multilayer phase retarder for characterization up to 1200 eV.
  • Development of a fast and accurate alignment procedure for ease of use across beamlines.

Main Results:

  • The polarimeter demonstrated high precision and versatility in soft x-ray polarization analysis.
  • Successful characterization of reflection and transmission properties of optical elements.
  • Complete polarization analysis of an APPLE II undulator at 712 eV was achieved.

Conclusions:

  • The developed polarimeter is a valuable tool for soft x-ray research, offering high precision and flexibility.
  • The instrument facilitates detailed analysis of polarization states, crucial for synchrotron-based experiments.
  • Its mobility and independent control system enhance its utility across different synchrotron facilities.