A small and compact AMS facility for tritium depth profiling

A dedicated AMS facility for depth profiling of tritium in carbon samples containing higher quantities of tritium has been installed, tested and applied for routine measurements in the Forschungszentrum Rossendorf. It is based on an SF6-insulated 100 kV tandem accelerator equipped with a thin diamond-like carbon (DLC) stripper foil of about 1 µg/cm2. The carbon samples have been cut from tiles of the inner wall of the fusion experiments ASDEX-upgrade Garching/Germany, JET Culham/GB and TFTR Princeton/USA. Depth profiles of deuterium and other light elements can be measured simultaneously using the Faraday cup at the entrance of the accelerator (SIMS mode of the facility) or in the case of very low concentrations after acceleration using a particle detector (AMS mode).