Current status

Certain features of the beamline and endstations are still actively being worked on.
Take these comments into account when planning your experiment

 

Photon energy
  • Specifications: 10-1000eV
  • Comments: Commissioned for high flux in the range 10-250eV, corresponding to the first harmonic of the EPU. Higher energies (250-1000eV) suitable for core level spectroscopy are possible through the EPU wiggler mode, with significantly reduced flux.
Gratings:
  • Specifications: 4 gratings, 4000 lines/mm for cNIM mode and 92, 800 and 2400 lines/mm for the cPGM mode.
  • Comments: 800 lines/mm grating installed and commissioned. 92, 2400, 4000 lines/mm grating installed, commissioning nearing completion.
Polarization
  • Specifications: Fully elliptically polarizing undulator
  • Comments: Horizontal and vertical linear polarization commissioned. Circular polarization under commissioning.
Cooling
  • Specifications: < 20K at sample position
  • Comments: 18K achieved at sample position using high LHe flow, but consumption is very high. 24K can be maintained with reasonable consumption (2L/h). On liquid nitrogen, 84K at sample position can be maintained indefinitely.
Variable sample temperature
  • Specifications: Arbitrary temperature stabilization between 20K-420K at the sample position.
    Comments: Achieved by counter-heating the cryostat and adjusting cryogen flowrate. Above 330K requires cryogen flow to be stopped.
Spin ARPES
  • Specifications: 3D Spin ARPES.
  • Comments: Part of second end station, under commissioning.
Higher order suppression
  • Specifications: Quasi periodic undulator, solid state filters and gas filter.
  • Comments: Only Quasi periodic undulator is commissioned and available for higher order suppression.