München 2009 – scientific programme

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T: Fachverband Teilchenphysik

T 60: Kalorimeter 1

T 60.9: Talk

Monday, March 9, 2009, 19:00–19:15, A016

SiPM Measurements for a Highly Granular Calorimeter — •Kolja Prothmann — Foehringer Ring 6

Silicon photomultipliers (SiPM) are promising devices for the readout of a highly granular scintillator-tile hadron calorimeter, currently under study for the future ILC detector. For this reason comparative measurements of Hamamatsu MPPCs (multi-pixel photon counter) and SiPMs produced at the Semiconductor Lab (HLL) of the Max Planck Society were started. A test stand was assembled with the aim to measure all parameters that affect the energy resolution of a hadronic calorimeter such as the photon sensitivity, darkrate, gain and linearity of SiPMs. To create a photon-sensitivity map of the surface amicroscope laser scan was established. In a different test the SiPMs were coupled to scintillators and test measurements using cosmic particles and beta particles from radioactive sources were performed.