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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 37: Astroteilchenphysik: Methoden II

T 37.7: Talk

Tuesday, March 26, 2019, 17:30–17:45, S12

Characterisation of PMTs for the FlashCam ProjectStefan Eschbach, •Oleg Kalekin, and Johannes Schumann — Friedrich-Alexander-Universität Erlangen-Nürnberg, ECAP

The FlashCam project aims to build a camera for the Middle Size Telescopes of the Cherenkov Telescope Array Project. The 1758 pixel camera consists of 1.5-inch Hamamatsu PMTs of type R12992-100. A subset of 400 PMTs was characterised at Erlangen Centre for Astroparticle Physics. Tested parameters were Quantum Efficiency (QE), afterpulsing, gain, transit time spread, rise time and width of single photoelectron pulses. All these parameters are in agreement with specifications. However, for some PMTs a strong inhomogeneity of QE over photocathode was found.

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