Accurate high voltage measurements based on laser spectroscopy

Conference: VDE-Hochspannungstechnik 2018 - ETG-Fachtagung
11/12/2018 - 11/14/2018 at Berlin, Deutschland

Proceedings: ETG-Fb. 157: VDE-Hochspannungstechnik

Pages: 4Language: englishTyp: PDF

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König, Kristian; Imgram, Phillip; Maass, Bernhard; Noertershaeuser, Wilfried; Ratajczyk, Tim; Kraemer, Joerg (Institut für Kernphysik, Technische Universität Darmstadt, Germany)
Geppert, Christopher (Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, Germany)
Meisner, Johann; Passon, Stephan (Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany)
Otten, Ernst (Institut für Physik, Johannes Gutenberg-Universität Mainz, Germany)
Ullmann, Johannes (Institut für Kernphysik, Technische Universität Darmstadt & Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Germany)

We present results of laser spectroscopic high voltage measurements on the 5 ppm relative uncertainty level using a pump and probe scheme on Ca+ ions. With the two-stage laser interaction and with a reference measurement we can eliminate systematic effects like differences in contact potentials of electrode materials, thermo-electric voltages, and the unknown starting potential of the ions in the ion source. Our measurements are compatible with the 5 ppm precision limits of the high voltage dividers used for comparison and demonstrate an unprecedented increase in the precision of laser-based high voltage measurements by a factor of 20.