UE112_PGM-2b-1^3

UE112_PGM-2b-1^3

This low energy beamline serves the permanent stations for angle-resolved photoelectron spectroscopy, 13 and 12 ARPES. It is designed to deliver a high flux of photons with very high energy resolution in the range from 5 to 250 eV. In addition to its normal operation with grazing incidence angles, the monochromator also offers a normal indcidence option to retain flux and polarization at the lowest energies.

The monochromated beam branches into two lines to serve the 12 (left) and 13 (right) setups. The latter has a focus of 250 µm.

Flux and bandwidth of with various gratings

Flux and bandwidth of with various gratings

List of publications
Beamline data
Segment H13
Location (Pillar) 14.2
Source UE112 (Elliptical Undulator)
Monochromator PGM 2
Energy range 4 - 200 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.)
Fixed endstation ARPES One-Cube
Flexible endstation(s) no
User endstation not possible
Distance Focus/last valve 814 mm
Height Focus/floor level 1757 mm
Beam availability 12h/d
Phone +49 30 8062 14696