Start of user operation of the Mono-energetic Positron Source MePS


Start of user operation of the Mono-energetic Positron Source MePS

Butterling, M.; Anwand, W.; Büttig, H.; Cowan, T. E.; Jungmann, M.; Keßler, C.; Müller, A.; Krause-Rehberg, R.; Staats, G.; Wagner, A.

Abstract

The Mono-energetic Positron Source MePS is an intense positron source for depth-resolving defect characterization at the superconducting accelerator ELBE (Electron LINAC for beams with high Brilliance and low Emittance) at Helmholtz-Zentrum Dresden-Rossendorf. In 2013 the chopper was added to improve timing resolution (before about 400 ps) and shape of positron lifetime spectra (by removing distortions). We also started user operation with investigations of porous samples. First measurements and results as well as the effect of the chopper will be presented.

Keywords: mono-energetic positrons; defect characterization; positron lifetime; accelerator

Involved research facilities

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    13th International Workshop on Slow Positron Beam Techniques and Applications, 15.-20.09.2013, München, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-19632