Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 51: Experimentelle Methoden der Astroteilchenphysik III

T 51.6: Talk

Tuesday, March 10, 2015, 18:00–18:15, I.13.70 (HS 27)

Design study of the Precision Optical Calibration Module for the PINGU detector — •Joost Veenkamp and Kai Krings for the IceCube collaboration — TU München, Physik-Department, Excellence Cluster Universe, Boltzmannstr. 2, 85748 Garching

The Precision IceCube Next Generation Upgrade (PINGU) will measure atmospheric neutrinos with a threshold of a few GeV. The primary goal for this extension is to determine the Neutrino mass hierarchy. A new level of precision is needed in order to reach this. The calibration of the DOM's is an important aspect in raising the precision to the needed level. A better calibration system will enable a better understanding of the ice and will therefore significantly reduce systematic effects. We present the Precision Optical Calibration Module (POCAM). By keeping the outer topology identical to that of the DOM, cost effective construction and deployment is ensured. The design of the POCAM is based on the principle of the integrating sphere. An appropriately placed LED in combination with a diffusive layer on the inside of the sphere results in an isotropic light emission from the apertures in the spherical housing. The output of the LED is controllable and known to high precision, it therefore ensures control over the output from the apertures. We report on the first investigations.