Rostock 2019 – scientific programme
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A: Fachverband Atomphysik
A 22: Highly charged ions and their applications
A 22.1: Poster
Wednesday, March 13, 2019, 16:15–18:15, S Fobau Physik
A Single Particle Scintillation Detector for Recombination Experiments at CRYRING@ESR — •Esther Babette Menz1,3, Christoph Hahn1,2,3, Michael Lestinsky2, Philip Pfäfflein1,2,3, Felix Kröger1,3, Uwe Spillmann2, Anton Kalinin2,4, Jan Glorius2, and Thomas Stöhlker1,2,3 — 1Helmholtz-Institut Jena, 07743 Jena — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt — 3Friedrich-Schiller-Universität Jena, 07743 Jena — 4Goethe-Universität Frankfurt, 60323 Frankfurt am Main
A YAP:Ce scintillation detector for counting beamlike reaction products has been installed and tested at the CRYRING@ESR heavy ion storage ring at GSI. YAP:Ce is a durable and non-hygroscopic crystal that is bakeable to a certain degree and is thus suitable for installation directly in the ultrahigh vacuum of the storage ring. The detector system is intended for observation of electron-ion recombination in the electron cooler section of CRYRING@ESR. Electron capture by the orbiting ions causes only a minimal change to their momentum but the resulting reduced charge state means that they diverge from the closed orbit at the next downstream dipole magnet. The scintillator can be moved into the path of the respective product beam for the given initial-to-final charge-state ratio and measure with an efficiency of nearly 100% in single-particle counting mode. The setup will be used for e.g. dielectronic recombination and 1s Lamb shift measurements on slow, heavy, highly-charged ions of all species the GSI accelerator complex is able to produce and transport through ESR.