Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentierung III

HK 21.4: Vortrag

Dienstag, 16. März 2010, 15:00–15:15, HG VIII

Annealing studies with ionizing, non-ionizing and combined radiation irradiated Monolithic Active Pixel Sensors* — •Dennis Doering¹, Michael Deveaux¹, Melissa Domachowski¹, Christian Müntz¹, Sarah Ottersbach¹, Joachim Stroth¹, and Franz M. Wagner² — ¹Institut für Kernphysik Goethe Universität, Frankfurt am Main — ²Forschungsneutronenquelle Heinz-Maier-Leibnitz (FRM II), Technische Universität München

CMOS Monolithic Active Pixel Sensors (MAPS) provide an outstanding combination of excellent spatial resolution (few µ m) and very light, thin ( <0.05 % X₀) material budget. Their use is foreseen in the vertex detectors of various experiments in heavy ion and particle physics. Among them is CBM. In order to handle the harsh radiation doses expected in this experiment the CBM-MVD collaboration undertakes intense R&D on the radiation hardness of MAPS.

In this context, we performed for a first time a systematic annealing study for MAPS being irradiated with X-rays, neutrons and a combination of both. The results will be presented and the feasibility of regenerating an irradiated CBM vertex detector by means of thermo cycling will be discussed.
*supported by BMBF (06FY173l;06FY9099I) and GSI (F&E)