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.

Optical layout of the UE46_PGM-1 beamline

Optical layout of the UE46_PGM-1 beamline


Beamline data
Segment L10
Location (Pillar) 11.2
Source UE46 (Elliptical Undulator)
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 100 µm x 50 µm
    ultimate 40 µm x 10 µm
  • collimated beam:
    ≤ 1.7 mm x 1.5 mm (depending on apertures)
User endstation not possible
Distance Focus/last valve 565 mm
Height Focus/floor level 1417 mm
Beam availability 12h/d
Phone +49 30 8062 14717
Applicable station(s)
High-Field Diffractometer 4 - 350 K
XUV Diffractometer 3.8 - 320 K ( for T = 3.0 K contact Instrument Scientists)
UE46-PGM1 beamline and endstations.

UE46-PGM1 beamline and endstations.


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 Institute 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

Selected Publications