May 24 – 28, 2021
America/Vancouver timezone

Development of a detector for a gravity measurement on positronium at the AEgIS experiment at CERN

May 26, 2021, 5:00 AM
Poster Experiments: Precision techniques at low energy Posters: Precision and Low Energy


Lisa Theresa Gloggler (Technische Universitaet Berlin (DE))


The primary goal of the AEgIS experiment at CERN is to measure the gravitational acceleration on neutral antimatter. Positronium (Ps), the metastable bound state of an electron and a positron, is a suitable candidate for a force-sensitive inertial measurement by means of deflectometry/interferometry. In order to conduct such an experiment, the impact position and time of arrival at the detector of Ps atoms must be detected simultaneously with a spatial resolution of better than 10 µm and a time-resolution in the order of 100 ns. The detection of a low-velocity Ps beam with a spatial resolution of (88 ± 5) µm was demonstrated [1]. Based on the methodology employed in [1], a hybrid imaging/timing detector with increased spatial resolution was developed. The performance of a prototype was tested with a positron beam. The concept of the detector is presented in detail and the results of the tests are shown.

[1] C. Amsler et al. NIM in Ph. Research B 457 (2019) 44-48

TIPP2020 abstract resubmission? Yes, this would have been presented at TIPP2020.

Primary author

Lisa Theresa Gloggler (Technische Universitaet Berlin (DE))

Presentation materials