Abstract
One crucial issue for applications of inorganic scintillators in future HEP experiments is radiation damage in a severe radiation environment, such as the HL-LHC. While radiation damage induced by ionization dose is well understood, investigations are on-going to understand radiation damage induced by hadrons, including both charged hadrons and neutrons. Aiming at understanding neutron induced radiation damage in fast inorganic scintillators, BaF2, LYSO/LFS and PWO crystals were irradiated at LANSCE by a combination of particles, including neutrons, protons and γ-rays. The results indicate that LYSO/LFS and BaF2 crystal plates are radiation hard up to 4 × 1015 fast neutrons/cm2.
Highlights
Because of their superb energy resolution and detection efficiency, crystal scintillators are widely used in high energy physics (HEP) experiments
The results indicate that LYSO/LFS and BaF2 crystal plates are radiation hard up to 4 × 1015 fast neutrons/cm2
We report neutron induced radiation damage in BaF2, LYSO and PWO crystals irradiated by a combination of particles, including neutrons, protons and γ-rays at the Weapons Neutron Research facility of Los Alamos Neutron Science Center (WNR of LANSCE) with a fast neutron (>1 MeV) fluence up to 4×1015 n/cm2, a proton fluence up to 1×1013 p/cm2 and several Mrad of ionization dose
Summary
Because of their superb energy resolution and detection efficiency, crystal scintillators are widely used in high energy physics (HEP) experiments. Fast and radiation hard cerium doped lutetium yttrium oxyorthosilicate (Lu2(1−x)Y2xSiO5:Ce or LYSO) crystals were proposed to construct an LYSO/W/Quartz capillary sampling calorimeter for the CMS upgrade [5], total absorption calorimeters for the SuperB experiment [6] and the Mu2e experiment at Fermilab [7]. They are currently being used to construct a total absorption calorimeter for the COMET experiment at KEK [8], and a 3D calorimeter for the HERD experiment in space [9]. They are proposed to construct a precision minimum ionization particle (MIP) timing detector (MTD) for CMS Phase-II upgrade for the HL-LHC [10]
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