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

AKBP: Arbeitskreis Beschleunigerphysik

AKBP 4: AKBP Posters

AKBP 4.18: Poster

Dienstag, 1. April 2025, 16:30–18:00, ZHG Foyer 1. OG

Adaptive automated activation of GaAs photocathodes at Photo-CATCH* — •Markus Engart, Joachim Enders, Maximilian Herbert, Maximilian Meier, Robin Petry, Julian Schulze, and Vincent Wende — Institut für Kernphysik - TU Darmstadt

Photocathodes based on the III-V seminconductor GaAs are used as photo-electron sources to supply spin-polarized electron beams for accelerator applications. In order to achieve a sufficient electron yield, a thin surface layer of cesium combined with an oxidant is applied onto the cathode surface. This process is called the cathode activation and is typically done manually by an experienced operator. This contribution presents the ongoing development and testing of an adaptive algorithm for automated activation at the Photo-CATCH test stand.

*Work supported by DFG (GRK 2128 AccelencE, project number 264883531)

Keywords: photocathode; GaAs; automation