Stuttgart 2012 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 9: Accelerator Mass Spectrometry and Applications II
MS 9.8: Talk
Friday, March 16, 2012, 12:15–12:30, V57.06
A new TOF-BPM system for CologneAMS — •Claus Müller-Gatermann1, Gheorghe Pascovici1, Lukas Fink1, Claus Feuerstein1, Alfred Dewald1, Stefan Heinze1, Markus Schiffer1, Michael Pfeiffer2, Jan Jolie2, Karl-Oskar Zell2, and Friedhelm von Blanckenburg3 — 1CologneAMS, Universität zu Köln — 2IKP, Universität zu Köln — 3GFZ, Portsdam
At the center for accelerator mass spectrometry at the University of Cologne (CologneAMS) a complex beam detector consisting of a high resolution Beam Profile Monitor (BPM) and a Time of Flight (TOF) spectrometer with tracking capabilities was developed especially for the needs of the Cologne AMS facility. The complex beam detector assembly is designed to match the beam specifications of the 6MV Tandetron AMS setup and is fully compatible with its DAQ system. The TOF-BPM system was designed in a reconfigurable structure, namely: either a faster TOF subsystem with a smaller active area or a more complex TOF-BPM detector with beam tracking capabilities and with a larger active area of ∼16 sq.cm. The system was put in operation in Nov. 2011 and it was successfully tested with various ion beams of Be, C, Cl etc. The system aims for background suppression in case of the spectrometry of heavy ions, e.g. U, Cm, Am etc. Using additional thin degraders mounted in the first detector head, the system could also be used for tagging isobars, i.e. isobar separations. We will report on details of the design and on first experimental results obtained with accelerated beams (timing resolution, spatial resolution and tracking capabilities in conjunction with some auxiliary detectors)