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Beamline Description

End Station

The top view of the end station illustrates a configuration with the main chamber in the centre (with the Phoibos analyzer in bottom left corner) and the preparation chamber on the right side (load lock with transfer at right edge of the image). There are gate valves between the main chamber and the beamline, between the main chamber and the preparation chamber and between the preparation chamber and the load lock.

The Main Chamber

The fundamental instrument in the experimental chamber is the hemispherical energy analyzer (SPECS Phoibos 150 [2]) inclined 60° from the beamline axis. Samples aer mounted in a holder on a manipulator with X, Y and Z linear axis and azimutal and polar rotations. Furthermore, the manipulator also allows heating and cooling of the sample together with Ar+ sputtering, gas lines with precision leak valves and set of evaporators this allows the preparation of well-defined surfaces of various materials in-situ. The chamber is pumped by a combination of a turbomolecular pump and a Ti sublimation pump. Residual atmosphere as well as gasses desorbed from sample can be measured by a quadrupole mass spectrometer. The base pressure of the main chamber is in low 10-10 mbar range.


The Preparation Chamber

A small preparation chamber is available for sample treatment with a sputter gun available. The sample is hosted on a transfer rod. Several CF 40 and CF 63 flanges are available for users' equipment. Sample heating is not available in the preparation chamber. The sample preparation chamber is equipped with a load-lock that allows the transfer of samples in 30 minutes from air to a vacuum of better than 10-8 mbar. The preparation chamber is pumped by a turbomolecular pump and a Ti sublimation pump. Base pressure is in 10-9 mbar range.
Last Updated on Wednesday, 21 December 2011 18:02