Test of High Time Resolution MRPC with Different Readout Modes

TL;DR

This study compares single and double-end readout MRPC designs for particle detection, demonstrating that double-end readout achieves better time resolution and efficiency without position dependence, enhancing BESIII detector capabilities.

Contribution

It provides a comparative analysis of single and double-end readout MRPCs, highlighting the superior timing performance of double-end readout for particle identification.

Findings

Double-end readout MRPC achieves 40 ps time resolution.

Both MRPC types have over 98% efficiency.

Double-end readout shows no incident position dependence.

Abstract

In order to further enhance the particle identification capability of the Beijing Spectrometer (BESIII), it is proposed to upgrade the current end-cap time-of-flight (eTOF) detector with multi-gap resistive plate chamber (MRPC). The prototypes, together with the front end electronics (FEE) and time digitizer (TDIG) module have been tested at the E3 line of Beijing Electron Positron Collider (BEPCII) to study the difference between the single and double-end readout MRPC designs. The time resolutions (sigma) of the single-end readout MRPC are 47/53 ps obtained by 600 MeV/c proton/pion beam, while that of the double-end readout MRPC is 40 ps (proton beam). The efficiencies of three MRPC modules tested by both proton and pion beam are better than 98%. For the double-end readout MRPC, no incident position dependence is observed.