Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 12: Astroteilchenphysik: Methoden I

T 12.8: Vortrag

Montag, 25. März 2019, 17:45–18:00, S12

Effectivity analysis of a new lightguide design for SiPM pixel in MAGIC — •Alina Nasr Esfahani for the MAGIC collaboration — TU Dortmund, LS E5b, Otto-Hahn-Strasse 4a, 44227 Dortmund

MAGIC is a stereocopic system of two Imaging Air Cherenkov Telescopes on La Palma. At the edges of the camera, which uses Photomultiplier Tubes (PMTs), test clusters of silicon photomultipliers (SiPMs) have been installed.

To maximize the surface area of PMTs and SiPMs, collimators are placed on the pixels to guide the cherenkov light produced in particle showers to the sensor surface. Besides the currently used Winston Cones as lightguides for the SIPM Cluster, different lightguide designs have been installed which are cheaper in the production, while retaining the desired performance. In this talk, the performance of the different collimators are compared. Also, a comparison of the arrival times of lightpulses in SiPM und PMT pixels is shown.