Frankfurt 2014 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 57: Instrumentierung
HK 57.5: Talk
Friday, March 21, 2014, 12:15–12:30, HZ 9
An improved detector response simulation for the CBM Silicon Tracking System — •Hanna Malygina for the CBM collaboration — Goethe Universität Frankfurt
The Compressed Baryonic Matter experiment(CBM) at FAIR is designed to explore the QCD phase diagram in the region of high net-baryon densities. As the central detector component the Silicon Tracking System (STS) is based on double-sided micro-strip sensors. To achieve realistic simulations the response of the silicon strip sensors should be precisely included in the digitizer which simulates a complete chain of physical processes caused by charged particles traversing the detector, from charge creation in silicon to a digital output signal. The new version of the STS digitizer comprises in addition non-uniform energy loss distributions (according to the Urban theory), thermal diffusion and charge redistribution over the read-out channels due to interstrip capacitances. To verify the performance of the new digitizer we chose 1 GeV-pions as incident particles, tracks with random impact and inclination from −450 to 450. We used the center-of-gravity algorithm to reconstruct the clusters. As the most significant effect we identified the non-uniform energy loss along the incident particle track. A comparison between experimental data from LHCb and our simulation is shown.
Supported by EU-FP7 HadronPhysics3, HIC for FAIR, HGS-HIRe and H-QM.