Markus Schiffer (Cologne): The AMS measurement capabilities at the University of Cologne

The Cologne center for accelerator mass spectrometry (CologneAMS) uses a 6 MV AMS system from HVEE and a dedicated AMS beamline for medium mass isotopes at the 10 MV FN tandem accelerator. Measurements of ¹⁰Be, ¹⁴C, ²⁶Al, ³⁶Cl and actinides are performed in routine operation since the founding in 2011.
The 6 MV AMS system was subsequently extended by a gas ion source and a gas handling system, dedicated to small ¹⁴C samples. This enabled in-situ ¹⁴C and compound-specific AMS measurements. Because of the accessible high ion energy at the 10 MV FN accelerator an AMS beamline was build up, consisting of an injection system, an achromatic high energy mass spectrometer and a 135° gas-filled magnet for ⁵³Mn and ⁶⁰Fe measurement.
New research projects are the measurement of ⁴¹Ca in reactor concrete as a reference nuclide for nuclear waste management and the determination of ³H, ¹⁴C and ³⁶Cl in reactor graphite. Therefore a new gas handling system for CO₂ samples with high ¹⁴C concentrations is under construction, as well as a 100 kV tandem accelerator for ³H measurements. Additionally it is planned to install a 3 MV tandetron AMS system for nuclear waste management measurements.