München 2019 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 15: Poster session

AKBP 15.14: Poster

Donnerstag, 21. März 2019, 16:30–18:00, Durchgangshalle

Inverted-geometry photo-electron gun research and development at TU Darmstadt — •Vincent Wende¹, Joachim Enders¹, Yuliya Fritzsche¹, Maximilian Herbert¹, and Neeraj Kurichiyanil² — ¹Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt — ²Department of Medical Physics, Ludwig-Maximilians-Universität München, 85748 Garching

The Superconducting Darmstadt Linear Accelerator S-DALINAC provides electron beams for a variety of experiments in nuclear structure physics [1]. A photo-electron gun [2] using GaAs photocathodes provides pulsed and/or polarized electron beams. In order to optimize cathode performance for this source, a test facility for Photo-Cathode Activation, Test and Cleaning using atomic-Hydrogen (Photo-CATCH) has been constructed [3]. This setup consists of vacuum chambers for photocathode cleaning, activation and testing and a 60 keV beamline [4]. Currently, an upgraded inverted-insulator geometry is under investigation for Photo-CATCH that is supposed to be later implemented at the S-DALINAC, as well. This poster will present the current status of Photo-CATCH as well as ongoing developments and planned measurements.

Work supported by the Deutsche Forschungsgemeinschaft through GRK 2128 "AccelencE"

[1]: N.Pietralla, Nuclear Physics News 28(2), 4 (2018)

[2]: Y. Poltoratska et al., J. Phys.: Conf. Series 298, 012002 (2011)

[3] M. Espig, Dissertation, TU Darmstadt (2016)

[4] N. Kurichiyanil, Dissertation, TU Darmstadt (2016)