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D'EUSO-Balloon à EUSO-SPB : intégration, tests et résultats

Simon Bacholle 1
1 APC - AHE - APC - Astrophysique des Hautes Energies
APC (UMR_7164) - AstroParticule et Cosmologie, Dipartimento di Astronomia, Universita degli Studi di Bologna
Abstract : JEM-EUSO is a future space UV telescope dedicated to the observation of Ultra-High Energy Cosmic Rays( UHECR, E over 3x10^19 eV), through the detection of the UV light emitted by Extensive Air Showers (EAS) produced by the interaction between the UHECR and the Earth atmosphere. The work done during my PhD was focused on EUSO-Balloon, a smaller scale balloon borne prototype of JEM-EUSO with a complete detection chain and Fresnel optics. During my PhD, I took part in the calibration of the focal surface, made up of 36 multi-anode photomultipliers as well as the integration and full scale tests of the read-out electronics and the whole instrument. I took part of the flight campaign in Timmins, Canada with a flight on the 24th of August 2014. During the flight, the instrument was able to observe the UV light reflected by the ground as well as laser pulses shot from an helicopter flying under the balloon during the first part of the flight to simulate EAS signal as seen from the instrument. After the first flight of EUSO-Balloon, a second flight of several weeks is planned for spring 2017, with the goal of observing real UHECR events from above. I took part of several test campaigns to improve the performances of the instrument for the second flight. Finally, I estimated the number of events the instrument could be able to detect during a several-week flight with the help of a numerical simulation of a balloon flight considering EAS and instrument parameters.
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Simon Bacholle. D'EUSO-Balloon à EUSO-SPB : intégration, tests et résultats. Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]. Université Paris Diderot, 2016. Français. ⟨tel-01956961⟩

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