Simulation Study for the Energy Resolution Performances of Homogenous Calorimeters with Scintillator-Photodetector Combinations

Abstract

The scintillating properties of active materials used in high energy and particle physics experiments play an important role regarding the performances of both calorimeters and experiments. Two scintillator materials, a scintillating glass and an inorganic crystals were examined to be used for collider experiments showing good optical and scintillating properties. This paper discusses the simulated performances of two materials of interest assembled in a scintillator-photodetector combination. The computational study was carried out with Geant4 simulation program to determine energy resolutions of such calorimeter with different beam energies and calorimeter sizes.

R&D of glass scintillator for nuclear radiation detection

“…In September 2021, led by the Institute of High Energy Physics of Chinese Academy of Sciences, domestic universities, research institutes and enterprises jointly established a GS Group to research and develop the glass scintillators withhigh density, high light yield, fast decay time.More than 400 glass samples were synthesized. Through continuous optimization,a glass was obtained with an excellentscintillation performance with a light yield of 1000 ph/MeV and a density of 6 g/cm 3 .…”

“…In addition, glass scintillators with high density, good scintillation performance and fast decay time can also be used in nuclear radiation detection and nuclear medicine, such as neutron/Gamma discrimination, CT and TOF-PET. Hafnium fluoride glasses have also been considered to apply in calorimeter of the Compact Muon Selenoid (CMS) in the Large Hadron Collider (LHC) [3]. Moreover, gadolinium silicate glasses doped with Tb 3+ are useful for neutron detection as well as large-area and fiber-optic plate detectors for industrial X-ray inspection systems [4].…”

“…In such a background, there are several essential performance indicators that have been proposed for glass scintillators. Firstly, it is crucial for the density to reach 6 g/cm 3 as high density provides a superior energy sampling ratio. Secondly, a light yield of 1000∼2000 ph/MeV is desired as it allows for higher energy resolution and facilitates the detection of low-energy events.…”

“…However, they cannot reach up an ideal density due to special components and preparation process. Through continuous optimization, GS Group developed a glass scintillator more suitable for HCAL, with a light yield of 1000 ph/MeV and a density of 6 g/cm 3 .…”