Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 2: Instrumentation 1
HK 2.4: Vortrag
Montag, 23. März 2015, 15:30–15:45, M/HS1
Radiation tolerance of microstrip sensors for the CBM Silicon Tracking System — Minni Singla1, Pavel Larionov2, •Ievgeniia Momot2,3, Tomas Balog1, Johann Heuser1, Iurii Sorokin1,3, and Christian Sturm1 for the CBM collaboration — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Goethe-Universität, Frankfurt — 3KINR, Kyiv, Ukraine
The Silicon Tracking System (STS), the core detector of CBM experiment located in the dipole magnet, provides track reconstruction and momentum determination of charged particles originating from beam-target interactions. The STS will consist of eight planar tracking stations. A response of double-sided silicon micro-strip sensors to the hits by charged particles will be used for the track reconstruction. Radiation load expected in the CBM experiment may significantly influence this response. The development of radiation tolerant prototype STS microstrip sensors irradiated up to 2x1014 1-MeV neq/cm2 will be overviewed. Results of charge collection efficiency studies with the latest silicon sensor prototypes with double metallization or external interstrip cables for connecting strips at their edges will be presented.
Supported by HIC for FAIR and HGS-HIRe.