Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Instrumentation VIII

HK 30.4: Vortrag

Dienstag, 15. März 2016, 17:30–17:45, S1/01 A3

A novel enhanced calibration method for DSSSD detectors — •Levent Kaya, Andreas Vogt, Peter Reiter, Benedikt Birkenbach, Rouven Hirsch, Michael Seidlitz, and Nigel Warr — Institut für Kernphysik, Universität zu Köln

Double-sided silicon strip detectors (DSSSD) are employed for the detection of charged particles in low-energy nuclear physics providing position and energy information for the impinging particle. Intersecting areas of both p- and n-side strips form individual pixel segments allowing for a high detector granularity. However, due to limitation in fabrication and the response of readout electronics, the performance of different channels may vary. In order to achieve best energy information, a calibration of each p- and n-side strip with a very high precision is mandatory. DSSSD responses are analyzed employing energy correlation matrices between adjacent strips in order to determine charge-sharing and energy-loss effects. A novel calibration method is based on the fact that each event is registered simultaneously on the p- and n-side strips. A two-dimensional calibration procedure allows for a significant enhancement of the energy resolution. In this way, the performance of DSSSDs with position-dependent radiation damage is improved clearly by excluding locally damaged detector areas without losing the information of complete p- or n-side strips. Supported by Bonn-Cologne Graduate School.