Hannover 2013 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: Poster
MS 8.6: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
Detector Systems for Beam Diagnostics and Neutral Molecular Fragment Imaging at the Cryogenic Storage Ring — •Arno Becker1, Klaus Blaum1, Manfred Grieser1, Robert von Hahn1, Claude Krantz1, Oldřich Novotný2, Kaija Spruck3, Xavier Urbain4, Stephen Vogel1, and Andreas Wolf1 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Columbia Astrophysics Laboratory, New York, USA — 3Institut für Atom- und Molekülphysik, Giessen — 4Université catholique de Louvain, Louvain-la-Neuve, Belgium
The electrostatic Cryogenic Storage Ring (CSR), currently under construction at the Max Planck Institute for Nuclear Physics in Heidelberg, will enable long time storage of slow molecular ions with energies up to 300 keV and low blackbody radiation corresponding to the ∼10 K temperature of the storage ring enclosure. Under these conditions polyatomic ions up to high masses can be prepared in or near the rovibrational ground state. Their fragmentation can be studied by fast-beam coincidence fragment momentum imaging.
For direct beam diagnostics as well as for imaging of neutral fragments from dissociative recombination reactions MCP-based detector systems with phosphor screens are being developed. The requirements of the CSR regarding the huge temperature range from operation at ∼10 K to bakeout at ∼520 K as well as an extremly high vacuum of better then 10−13 mbar place strong demands on the design. The technical details for the installation of these cryogenic detection systems in the CSR will be presented.