Münster 2017 – scientific programme
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T: Fachverband Teilchenphysik
T 91: Streifendetektoren 2 (gemeinsam mit HK)
T 91.5: Talk
Wednesday, March 29, 2017, 17:45–18:00, F 102
Long Term Annealing Studies on ATLAS12 Sensors — •Leena Diehl, Riccardo Mori, Marc Hauser, Susanne Kühn, Ulrich Parzefall, Ines Messmer, and Karl Jakobs — Albert-Ludwigs-Universität Freiburg
Non-ionizing energy loss (NIEL) causes damage to silicon particle detectors, resulting for p-type sensors in an increased effective doping concentration, growing depletion voltage and leakage current. Defects in the lattice are mobile with an exponential temperature dependence.
Therefore, a long-term study of damage parameters is performed as a function of time at Room Temperature and 60∘C, using irradiated p-type sensors up to a fluence of 2e15 neq/cm2. Measurements include the charge collection and leakage current behavior, the scaling factor between the two temperatures and the behavior of the effective doping concentration. A strong deviation from the conventional scaling factor is found.