UE112_PGM-2a-1^2

UE112_PGM-2a-1^2

Optical design of the UE112 PGM-2a-1^2 beamline is shown in the Figure 1. It is based on low-energy collimated plane-grating monochromator with normal incidence option. The beamline delivers photons in the energy range from 10 to 250 eV. Energy resolution for the photon energies below 100 eV can be tuned down to 1 meV. Horizontal dimension of the focal spot is about 150 μm, its vertical dimension depends on the exit slit setting but is typically about 20 μm.

Figure 1. Optical design of the UE112 PGM-2a-1^2 beamline.

Figure 1. Optical design of the UE112 PGM-2a-1^2 beamline.


Station data
Temperature range Measurement: 15–400K; Preparation up to 2300K
Pressure range 1E-10 mbar
More details ARPES One-Square
Beamline data
Segment H13
Location (Pillar) 14.2
Source UE112 (Elliptical Undulator)
Monochromator PGM 2
Energy range 9 - 250 eV
Energy resolution < 1 meV for E < 100 eV
Flux >1013 (photons/s/0.1%bw/100 mA)
Polarisation • linear any angle
• circular
Divergence horizontal 1 mrad
Divergence vertical 3 mrad
Focus size (hor. x vert.) 150 x variable μm2
User endstation not possible
Distance Focus/last valve 867 mm
Height Focus/floor level 1685 mm
Beam availability 12h/d
Phone +49 30 8062 14696

For more details and current status contact the Instrument Scientist(s).