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A: Fachverband Atomphysik
A 33: Poster Session II
A 33.44: Poster
Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal
A Detection System for Laser Spectroscopy Experiments at CRYRING@ESR — •Axel Buß1, Volker Hannen1, Christian Huhmann1, Dominik Thomas1, and Zoran Andelkovic2 — 1Institut für Kernphysik, Universität Münster — 2GSI Helmholtzzentrum für Schwerionenforschung
In order to enable laser spectroscopy experiments at CRYRING, a new general purpose fluorescence detector has been developed at the University of Münster. The design allows detection from ultraviolet wavelengths to the near infrared regime. Thus, the detector can be used to observe a large variety of atomic transitions. Among others Mg- (at 280 nm) and Ca+ (at 854 nm/866 nm) ions have transitions in the wavelength regime covered by the detector.
Geant4 simulations have been performed in order to optimize the detection efficiency of fluorescence photons, while * at the same time * suppressing the detection of background photons. This is realized by an elliptical detector geometry, which selectively focuses fluorescence photons from the beam axis onto PMTs outside of the vacuum. In order to achieve a high sensitivity over the complete wavelength range, two sets of interchangable PMTs will be used, one for the UV range and one for the long wavelength part. By the time of the DPG spring meeting, construction of the detection system and integration into the CRYRING facility should be complete. The poster will present the design, construction, and status of the instrument.
This project is funded by BMBF under contract number 05P15PMFAA.