Speaker
Mr
Sebastian Kalista
(Stefan Meyer)
Description
The AEgIS Collaboration at CERN will perform the world’s first direct measurement of the Earth´s gravitational acceleration on antimatter, by sending an antihydrogen beam through a classical deflectometer.
I will present a detector for a first measurement of the gravitational effects on an antimatter system. The detector consists of pure Caesium Iodide crystals and commercially available Silicon Photomultipliers to measure the light produced in the corresponding annihilation processes. The CsI crystals decay times and spectra were characterized using a Na²² source at room and at low temperatures. Furthermore, the behaviour of the SiPMs at low temperatures was examined. A measurement at the GRACE line using antiprotons is planned for June.
Author
Mr
Sebastian Kalista
(Stefan Meyer)
Co-authors
Prof.
Johann Zmeskal
(Stefan Meyer Institute for Subatomic Physics)
Prof.
Eberhard Widmann
(Stefan Meyer Institute for Subatomic Physics)
