Abstract
An end-cap Time-of-Flight (E-TOF) system with higher granularity and intrinsic time resolution of better than 50 ps will extend the K/pion separation (2 sigma) pT range to 1.4 GeV/c and enhance the physics capability of Beijing Spectrometer (BESIII). A R&D work was carried out aiming at upgrading the current BESIII E-TOF with the Multi-gap resistive Plate Chamber (MRPC) detector. The latest best test for the prototype MRPC, together with the custom designed Front End Electronics (FEE) and TDC boards, was performed at the BEPC E3 line in July 2012. The test results show that time resolution of less than 50 ps can be achieved with such a system.
Highlights
The Multi-gap resistive Plate Chamber (MRPC) detector is a good candidate for large area TOF system with very good time resolution, high efficiency and relatively low cost per channel.[1,2] It has been widely used as TOF detector in many experiments, such as LHC/ALICE,[3] RHIC/STAR.[4]
The MRPC detector is a good candidate for large area TOF system with very good time resolution, high efficiency and relatively low cost per channel.[1,2]
The BESIII5 is a high precision general-purpose detector designed for the high luminosity in the τ -charm energy region at the upgraded Beijing Electron-Positron Collider (BEPCII).[6]
Summary
The MRPC detector is a good candidate for large area TOF system with very good time resolution, high efficiency and relatively low cost per channel.[1,2] It has been widely used as TOF detector in many experiments, such as LHC/ALICE,[3] RHIC/STAR.[4]. This is an Open Access article published by World Scientific Publishing Company. The secondary beam contains pions and protons The MRPC was first tested with pion samples around 600 MeV which can be considered as MIPs. The slewing correction was made with T-TOT correlation. The performance of the MRPC is analyzed with proton samples which is the main contents of the beam.
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