Würzburg 2018 – scientific programme
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T: Fachverband Teilchenphysik
T 66: Halbleiterdetektoren / Strahlenhärte II
T 66.1: Talk
Wednesday, March 21, 2018, 16:30–16:45, Z6 - SR 2.010
Temperature and frequency dependent CV measurements of highly irradiated ALTAS strip detectors — •Sven Mägdefessel1, Riccardo Mori1, Eva Sicking2, and Ulrich Parzefall1 — 1Albert-Ludwigs-Universität Freiburg, Germany — 2CERN, Switzerland
Highly irradiated strip detectors do not show the typical behaviour of unirradiated sensors - used to determine the depletion voltage - anymore. Radiation damage related defects contribute to the measurable capacitance and superimpose the capacitance change due to depletion.
We use a dedicated set-up constructed for running the sensors at temperatures down to -40°C and present CV measurements performed at different temperatures and frequencies. Furthermore we show which informations can be derived out of these.