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T: Fachverband Teilchenphysik

T 82: Kosmische Strahlung IV

T 82.1: Gruppenbericht

Mittwoch, 2. März 2016, 16:45–17:05, VMP9 SR 29

The JEM-EUSO mission — •Francesca Bisconti for the JEM-EUSO collaboration — Institut für Kernphysik (IKP), Karlsruher Institut für Technologie (KIT)

The JEM-EUSO (Extreme Universe Space Observatory onboard the Japanese Experiment Module) Collaboration aims to investigate ultra high-energy cosmic rays (UHECRs), with a detector sensitive to the UV fluorescence emission of extensive air showers in the Earth’s atmosphere, looking down from the International Space Station. This will result in a large field of view and about tenfold better statistics for UHECRs than with ground-based observatories.

The basic component of the detector’s focal surface (about 2 m diameter) is the photo detector module (PDM, about 16 cm side), composed of 36 Multi-Anode Photomultiplier Tubes from Hamamatsu, with 64 pixels each. In front of the focal surface, Fresnel lenses focus photons on it.

Some telescope prototypes with one PDM focal surface are already active or under development, in order to validate the design and the potentiality of such a space based telescope. Moreover, silicon photo-multipliers (SiPMs) are under consideration for the realization of a PDM.

Motivation, detection principle and features of the space-based telescope, as well as those of its prototypes will be described.