Computing in High Energy and Nuclear Physics (CHEP) 2012

Calibration and reconstruction for the TOF system of BESIII

24 May 2012, 13:30

4h 45m

Rosenthal Pavilion (10th floor) (Kimmel Center)

Poster Event Processing (track 2) Poster Session

Speaker

Dr Shengsen Sun (Institute of High Energy Physics Chinese Academy of Scinences)

Description

The BESIII TOF detector system based on plastic scintillation counters consists of a double layer barrel and two single layer end caps. With the time calibration, the double-layer barrel TOF achieved 78ps time resolution for electrons, and end cap is about 110ps for muons. The attenuation length, effective velocity calibrations and TOF reconstruction are also described. The Kalman filter method is employed to calculate the predicted time instead of taking the track trajectory as a standard helix.