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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: Particle Sources

AKBP 5.3: Talk

Wednesday, April 2, 2025, 11:30–11:45, ZHG004

Photocathode Research at Photo-CATCH* — •Maximilian Herbert, Joachim Enders, Markus Engart, Jonas Imhof, Maximilian Meier, Robin Petry, Julian Schulze, Vincent Wende, and Victor Winter — Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, Darmstadt, Germany

TU Darmstadt's test stand for Photo-Cathode Activation, Testing and Cleaning using atomic-Hydrogen Photo-CATCH faciliates dedicated research on GaAs photocathodes for electron-beam production at accelerators. This contribution will give an overview of recent, ongoing and planned projects at Photo-CATCH, e.g., on automatized activations [1] and Li-enhanced surface layers for increased photocathode lifetime [2,3].

[1] M. Herbert et al., PoS(PSTP2022), Vol. 433, p. 003 (2023).

[2] N. Kurichiyanil et al., J. Instrum. 14 (8), P08025 (2019).

[3] M. Herbert et al., Phys. Rev. Accel. Beams, in press.

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

Keywords: Gallium Arsenide; Photocathodes; Electron Source