Mainz 2014 – scientific programme
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T: Fachverband Teilchenphysik
T 26: Ultrahochenergetische kosmische Strahlung 2
T 26.2: Talk
Monday, March 24, 2014, 17:05–17:20, P3
The JEM-EUSO prototype telescope TA-EUSO — •Francesca Bisconti1, Johannes Blümer1,2, Stefanie Falk1, Andreas Haungs1, Donghwa Kang1, Michael Karus1, and Naoto Sakaki1 — 1Institut für Kernphysik (IKP), Karlsruher Institut für Technologie (KIT) — 2Institut für Experimentelle Kernphysik (IEKP), KIT
To learn more about the origin of ultra high-energy cosmic rays (UHECRs) a new telescope is under development, JEM-EUSO (Extreme Universe Space Observatory at the Japanese Experiment Module). This telescope is designed to measure the fluorescence emission of extensive air showers in the Earth’s atmosphere, looking down from the International Space Station. In this way it is possible to have a large field of view and therefore about tenfold better statistics for UHECRs than with ground-based observatories.
To validate the design of such a space based telescope, one of the prototypes under development is “TA-EUSO” at the Telescope Array site (Utah), which should be completed and in operation in 2014. This prototype will give information about the calibration of the Fresnel lense system and the PDM (Photo Detector Modules) that will be used for JEM-EUSO on a bigger scale. The PDM consists of 36 Multianode-Photomultipliers (64 pixel each) from Hamamatsu.
For a second step, SiPMs (Silicon Photo-Multipliers) are under consideration for the realization of a PDM. The response of this sensor type is investigated by simulations and in the laboratory.