24.–25. Apr. 2017
GSI Helmholtzzentrum für Schwerionenforschung
Europe/Berlin Zeitzone

Status of the precision high voltage divider for the electron cooler at CRYRING

24.04.2017, 19:10
2h
Hörsaal KBW 1.017 (GSI Helmholtzzentrum für Schwerionenforschung)

Hörsaal KBW 1.017

GSI Helmholtzzentrum für Schwerionenforschung

Planckstraße 1 64291 Darmstadt Germany
Poster Instrumentation Posters

Sprecher

Herr Daniel Winzen (Institut für Kernphysik, WWU Münster)

Beschreibung

The low energy storage ring CRYRING is currently being comissioned as the first storage ring for FAIR phase 0 at GSI. CRYRING features an electron cooler to cool stored ions and thus achieve a low momentum spread of the beam. To determine the velocity of the ions a precise knowledge of the electron cooler voltage is essential. In earlier measurements of hyperfine transitions in hydrogen- and lithiumlike ions at the Experimental Storage Ring (ESR), the limiting uncertainty was the voltage measurement. To minimize this uncertainty we construct a high-precision divider for voltages up to 35 kV which will be similar to the ultrahigh-precision dividers used at the KATRIN experiment. The accuracy of the divider will be in the low ppm range and will allow for measurement uncertainties in the <10 E-5 region. The characteristics of the final design and the current project status will be presented. This work is supported by BMBF under contract number 05P15PMFAA and HGS-Hire for Fair.

Hauptautor

Herr Daniel Winzen (Institut für Kernphysik, WWU Münster)

Co-Autoren

Prof. Christian Weinheimer (Institut für Kernphysik, University of Münster) Herr Hans-Werner Ortjohann (WWU Münster) Herr Ilian Denesjuk (WWU Münster) Herr Oliver Rest (WWU Münster) Dr. Volker Hannen (Institut für Kernphysik, Uni Münster) Prof. Wilfried Noertershaeuser (TU Darmstadt)

Präsentationsmaterialien

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