Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 4: Instrumentation
HK 4.7: Vortrag
Montag, 19. März 2012, 15:45–16:00, P 2
Simulation of a new endcap time of flight system for the
BESIII experiment — •Matthias Ullrich, Hu Jifeng, Wolfgang Kühn, Sören Lange, Yutie Liang, Björn Spruck, and Marcel Werner — 2 Physikalisches Institut, Universität Gießen
The BESIII experiment is located at the BEPC II collider in Beijing, China at the Institute for High Energy Physics, commonly known as IHEP. The symmetric e+e− experiment optimized for the investigation of τ and charm physics has allready collected over 220M J/Ψ, 106M Ψ(2S), about 1fb−1 Ψ(3770) and 0.5 fb−1 Ψ(4040) events. Finishing the next run period in June 2012 the total amount of J/Ψ / Ψ(2S) events is expected to be 1 billion / 0.7 billion, respectively.
The actual endcap time of flight detector has a total time resolution of about 138 ps and is discussed to be replaced by a multigap resistive plate chamber (MRPC) providing a total time resolution of less than 80 ps.
We report about the implementation of such type of detector into the BESIII offline software system (BOSS) as replacement of the actual endcap time of flight detector. A detailed simulation code based on Geant4 as well as a full reconstruction code has been implemented and can easily be utilized for event simulation and reconstruction.