P09 Resonant Scattering and Diffraction beamline

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P09 is designed to operate in the tender and hard x-rays regime with energies ranging from 2.7 to 31 keV with full polarization control between 2.7 and 13.7 keV thanks to new phase retarder plates installed in 2016. The beamline consists of three experimental hutches. The first two experimental hutches, EH1 and EH2, are dedicated to resonant elastic X-ray scattering and diffraction (REXS) as well as X-ray magnetic circular dichroism (XMCD) experiments. The third hutch, EH3, is right now open port.

Experimental Hutch 1 is used for REXS experiments. In addition other scattering experiments requiring good energy tunability between 2.7 and 24 keV or variable polarization, can be performed like x-ray resonant magnetic reflectivity (XRMR). Closed-cycle cryostats covering the temperature range between 1.7K and 700K and a He-flow cryostat are available. Complete windowless operation of the diffractometer is also possible allowing for REXS experiments in the tender X-ray range (e.g. at the Ru or Pd LIII edge). A 4 coils electromagnet operating till 0.4 T is as well available allowing combined XRMR+XMCD between 50 and 300 K.

Experimental hutch 2 is equipped with a heavy-load horizontal Psi-diffractometer allowing for larger and heavier cryostats. A 14 T split-coil cryomagnet is available at the beamline allowing for high magnetic fields REXS till 14 Tesla in a temperature range between 2.3 K up to 300 K using the VTI or between 320 mK up to 2.3 K using the He-3 insert. A large volume pulse tube cryostat with high cooling power is available for high pressure experiments using diamond anvil cells (DACs). Temperature range is 4 till 300 K and pressure till 30 Gpa can be applied in situ. A 6/2/2 vector magnet or a 1 T electromagnet are available for XMCD.