UE46_PGM-1

UE46_PGM-1

UE46_PGM-1 is one of two beamlines situated at the elliptical undulator UE46. The beamline provides soft x-rays with tunable polarization (linear, circular) in the energy range between 120 eV and 2000 eV. It has a plane-grating design, the last mirror chamber hosts two mirrors that can be switched to provide a focussed or collimated beam. Techniques employed at UE46_PGM-1 include polarization-dependent x-ray absorption and resonant soft x-ray scattering experiments, covering a wide range of materials and scientific problems. Continuous-mode scanning is implemented at the beamline, a pair of energy-dependent x-ray absorption scans with opposite light helicities can be recorded with very high quality within less than 10 minutes. Depending on the sample, noise ratios as low as 10-4 can be achieved. The beamline hosts two permanent endstations, the XUV Diffractometer, an instrument dedicated to high performance RSXS studies and the High-field Diffractometer, an instrument for RSXS and XAS studies in magnetic fields up to 7 Tesla. Both instruments can be used within the same beam time. Beamline and instruments are operated by the Department Quantum Phenomena in Novel Materials at HZB.


Selected Applications

  • Resonant diffraction from magnetic, charge, and orbital order superstructures
  • Spectroscopy of electronic ordering phenomena
  • Magnetization states of single molecular magnets
  • Element-specific magnetic hysteresis loops
  • Magnetization depth profiles

UE46-PGM1 beamline and endstations.

UE46-PGM1 beamline and endstations.

Beamline data
Segment 9
Location 11.2
Source UE46
Monochromator PGM
Energy range 120 - 2000 eV
Energy resolution 10,000
Flux 1012
Polarisation • linear any angle (with restrictions)
• circular
Divergence horizontal 1 mrad
Divergence vertical 1 mrad
Focus size (hor. x vert.) • focussed beam:
typically 100µmx50µm
ultimate:40µmx10µm
• collimated beam:
≤ 1.7mmx1.5mm (depending on apertures)
Distance Focus/last valve 565 mm
Height Focus/floor level 1417 mm
Free photon beam available only under special conditions
(please contact the beamline scientist before application)
Fixed end station yes
Phone
Phone Number (8062) 14717

Selected Publications