26TH INTERNATIONAL CONFERENCE ON COMPUTING IN HIGH ENERGY & NUCLEAR PHYSICS (CHEP2023)

Likelihood analysis method for PID performance study of the DTOF detector at STCF

Not scheduled

1h

Hampton Roads Ballroom and Foyer Area (Norfolk Waterside Marriott)

Poster Poster Poster Session

Speaker

Qi, Binbin (University of Science and technology of China)

Description

The Super Tau-Charm Facility (STCF) is a future electron-positron collider proposed in China. It has a peak luminosity of above $0.5×10^{35}$ $cm^{-2}s^{-1}$ and center-of-mass energy ranging from 2 to 7 GeV. A time-of-flight detector based on detection of internally reflected Cherenkov light (DTOF), is proposed for the endcap particle identification (PID) at the STCF. In this contribution, we will present two likelihood analysis methods for the study of the PID performance of the DTOF detector. The first one is a TOF-based likelihood analysis, and the key step of this method is to develop a TOF reconstruction algorithm. The second is an imaging-based likelihood analysis, which combines the 2D position and arrival time measurements of each photon to construct the likelihood function. Furthermore, an analytical method is developed to fast obtain the hit pattern of photons for imaging-based likelihood analysis. All those methods can be potentially adopted by other experiments with the same type of DIRC-based timing approach for PID purposes.