München 2019 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 53: Instrumentation XII

HK 53.3: Vortrag

Donnerstag, 21. März 2019, 14:45–15:00, HS 12

Commissioning and calibration of a precision high voltage divider for the electron cooler at CRYRING@ESR — •Daniel Winzen1, Ilian Denesjuk1, Volker Hannen1, Wilfried Nörtershäuser2, Hans-Werner Ortjohann1, Oliver Rest1, and Christian Weinheimer11WWU Münster — 2TU Darmstadt

In high precision experiments at ion storage rings the velocity of the ions is a critical quantity. For measurements at CRYRING@ESR (GSI/FAIR) the electron cooler determines the ion velocity and momentum spread of the stored ions by superimposing the ion beam with a mono-energetic electron beam. Therefore, a precise knowledge of the acceleration voltage used to produce the electron beam is essential for the accuracy of the experiments. At the University of Münster we constructed a precision divider for voltages up to 35 kV with a similar design to the well-established and tested KATRIN dividers (K35 and K65) that were developed in Münster in cooperation with the PTB.
We will present calibration and stability measurements that characterize the performance of the high voltage divider. With a novel absolute calibration method the voltage dependency of the dividers scale factors could be measured to the ppm-level. As a consequence, it is possible to conduct ppm-precise voltage measurements over the whole 35 kV range of the divider. This work was supported by BMBF under contract number 05P15PMFAA, GSI F&E project MSWEIN1416 and HGS-HIRe for FAIR.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2019 > München