T. Gießel, R. Grosser

The photoemission end station consists of a two-chamber ultrahigh vacuum (UHV) system.

The analysis chamber is equipped with a 125 mm mean radius hemispherical electron energy analyzer (EA 125, Omicron) with a five channel detector. It is (in-situ) rotatable around the synchrotron light axis which allows for independent rotation of the analyzer and the sample relative to the SR light polarization.

The preparation chamber contains a quadrupole mass spectrometer, a low energy electron diffraction system (LEED), an ion sputter gun, gas inlets, evaporators and a loadlock for fast sample transfer.

For combined laser and SR experiments a fast EUV/X-ray sensitive photodiode and a small fluorescence screen can be moved at the sample position, for determination of the absolute pump-probe time delay and the spatial overlap, respectively.

Another experiment of the MBI using synchrotron radiation at BESSY concentrates on photoemission from liquid jets.