Advanced photoelectron spectrometer/diffractometer for studies of the atomic, electronic, and magnetic structure of surfaces, interfaces, and nanostructures

A next-generation experimental end station for surface and interface science studies has been developed with the aim of making full utilization of the capabilities of a third generation synchrotron radiation facility such as the Advanced Light Source. This system, the Advanced Photoelectron Spectrometer/Diffractrometer (APSD), has initially been installed on one half of the rotating platform on the bending magnet beamline 9.3.2 and is planned to be moved to the Elliptical Polarized Undulator (EPU) beamline 4.0.1 in the latter part of 1997. The first phase of the APSD system is completely commissioned and it has been routinely used by both the PRT and independent investigators since November, 1994, for numerous studies, as discussed in a number of other reports in this compendium. The following is a brief description of the important characteristics of this experimental end station as it now stands, together with the various improvements and additions for enhancing its capabilities that are either underway or planned.