Darmstadt 2016 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 11: Poster
AKBP 11.6: Poster
Wednesday, March 16, 2016, 18:30–20:30, S1/05 22-24
Studies on a Modified Cathode Tip for the ELBE SRF Gun — Eden Tafa Tulu1, Prasanth Babu Ganta1, André Arnold2, and •Ursula van Rienen1 — 1Universität Rostock, Institut für Allgemeine Elektrotechnik, Albert-Einstein-Str. 2, 18059 Rostock — 2HZDR, Strahlungsquelle ELBE, Bautzner Landstraße 400, 01328 Dresden
Future light sources such as synchrotron radiation sources driven by an Energy Recovery Linac (ERL), Free Electron Laser (FEL) or THz radiation sources have in common that they require injectors, which provide high-brilliance, high-current electron beams in almost continuous operation. Thus, the development of appropriate highly brilliant electron sources is a central factor. A promising approach for this key component is provided by superconducting radiofrequency photoinjectors (SRF guns). Since 2007, the free-electron laser FELBE at HZDR successfully operates such a SRF gun under real conditions and equipped with all components. Nevertheless, there are limitations caused by multipacting which should be overcome in order to further improve the gun. One aspect in order to reach this aim lies in studying various modifications of the cathode tip. This contribution will present results of a systematic multi-objective optimization with respect to multipacting of differently formed grooves. Work supported by Federal Ministry for Research and Education BMBF under contract 05K13HRB.