Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 50: Instrumentierung

HK 50.5: Vortrag

Donnerstag, 20. März 2014, 18:00–18:15, HZ 8

A simulation model of MAPS for the FairRoot framework* — •Samir Amar-Youcef, Benjamin Linnik, and Philipp Sitzmann for the CBM-MVD collaboration — Goethe-Universität Frankfurt

CMOS MAPS are the sensors of choice for the MVD of the CBM experiment at the FAIR facility. They offer a unique combination of features required for the CBM detector like low material budget, spatial resolution, radiation tolerance and yet sufficient read-out speed.

The physics performance of various designs of the MVD integrated to the CBM detector system is evaluated in the CBM-/FairRoot simulation framework. In this context, algorithm are developed to simulate the realistic detector response and to optimize feature extraction from the sensor information. The objective of the sensor response model is to provide fast and realistic pixel response for a given track energy loss and position. In addition, we discuss aspects of simulating event pile-up and dataflow in the context of the CBM FLES event extraction and selection concept. This is of particular importance for the MVD since the sensors feature a comparably long integration time and a frame-wise read-out. All other detector systems operate with un-triggered front-end electronics and are freely streaming time-stamped data to the FLES. Because of the large data rates, event extraction is performed via distributed networking on a large HPC compute farm.

We present an overview and status of the MVD software developments focusing on the integration of the system in a free-flowing read-out system and on the concurrent application for simulated and real data. *supported by BMBF (05P12RFFC7), HIC for FAIR and GSI