A GEANT4 Simulation Studyof BESIII endcap TOF Upgrade

Abstract

A GEANT4-based Monte-Carlo model is developed to study the performance of Endcap Time-Of-Flight (ETOF) at BESIII. It's found that the multiple scattering effects, mainly from the materials at the MDC endcap, can cause multi-hit on the ETOF's readout cell and significantly influence the timing property of ETOF. Multi-gap Resistive Plate Chamber (MRPC) with a smaller readout cell structure is more suitable for ETOF detector due to significantly reduced multi-hit rate, from 71.5% for currently-used scintillator-based ETOF to 21.8% or 16.7% for MRPC-based ETOF, depending on the readout pad size used. The timing performance of a MRPC ETOF is also improved. These simulation results suggest and guide an ETOF upgrade effort at BESIII.

11 pages,9 figures

References in corpus (1)

• Design and Construction of the BESIII Detector

Cited by in corpus (6)

• The upgrade system of BESIII ETOF with MRPC technology
• Test of High Time Resolution MRPC with Different Readout Modes
• The cosmic ray test of MRPCs for the BESIII ETOF upgrade
• First results of the new endcap TOF commissioning at BESIII
• Simulation of the BESIII Endcap Time of Flight Upgrade
• Monte-Carlo study of the MRPC prototype for the upgrade of BESIII