Neutron-Induced Radiation Damage in BaF_2, LYSO/LFS and PWO Crystals

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, BaF_2, 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 BaF_2 crystal plates are radiation hard up to 4 × 10^(15) fast neutrons/cm^2

Performance of Crystal Scintillators in a Severe Radiation Environment Caused by Protons

Future high energy physics experiments at the energy and intensity frontiers will face challenges from a severe radiation environment caused by both ionization dose and charged and neutral hadrons. This paper reports an investigation on proton induced radiation damage in various crystal scintillators. Large size BGO, LFS and PWO crystals of 18 to 22 cm long were irradiated by 800 MeV protons up to 3 × 10^(15) p/cm^2 at the WNR facility of LANSCE with longitudinal transmittance measured in situ. LYSO plates of 14 × 4 × 1.5 mm^3 were irradiated by 24 GeV protons up to 8.2 × 10^(15)p/cm^2 at the IRRAD facility of CERN. Degradations in both transmittance and light output are reported. The results show an excellent radiation hardness of LYSO/LFS crystals against charged hadrons

Neutron-Induced Radiation Damage in BaF_2, LYSO/LFS and PWO Crystals

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, BaF_2, 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 BaF_2 crystal plates are radiation hard up to 4 × 10^(15) fast neutrons/cm^2

Performance of crystal scintillators in a severe radiation environment caused by protons

Future high energy physics experiments at the energy and intensity frontiers will face challenges from a severe radiation environment caused by both ionization dose and charged and neutral hadrons. This paper reports an investigation on proton induced radiation damage in various crystal scintillators. Large size BGO, LFS and PWO crystals of 18 to 22 cm long were irradiated by 800 MeV protons up to $3 \times 10^{15} p/cm^2$ at the WNR facility of LANSCE with longitudinal transmittance measured in situ. LYSO plates of $14 \times 14 \times 1.5 mm^3$ were irradiated by 24 GeV protons up to $8.2 \times 10^{15} p/cm^2$ at the IRRAD facility of CERN. Degradations in both transmittance and light output are reported. The results show an excellent radiation hardness of LYSO/LFS crystals against charged hadrons

Proton induced radiation damage in fast crystal scintillators

This paper reports proton induced radiation damage in fast crystal scintillators. A 20 cm long LYSO crystal, a 15 cm long CeF3 crystal and four liquid scintillator based sealed quartz capillaries were irradiated by 800 MeV protons at Los Alamos up to 3.3×10^(14)p/cm^2. Four 1.5 mm thick LYSO plates were irradiated by 24 GeV protons at CERN up to 6.9×10^(15)p/cm^2. The results show an excellent radiation hardness of LYSO crystals against charged hadrons

Proton-Induced Radiation Damage in BGO, LFS, PWO and a LFS/W/Quartz Capillary Shashlik cell

Future high energy physics experiments at the energy and intensity frontiers will face challenges of a severe radiation environment from both ionization dose and charged and neutral hadrons. In this paper, we report an investigation on charged hadron-induced radiation damage in BGO, LYSO/LFS, PWO and a LYSO/W/Capillary shashlik cell by using 800 MeV and 24 GeV protons at LANL and CERN respectively. Degradations in both transmittance and light output are reported. The results show excellent radiation resistance of LYSO/LFS crystals and the LFS/W/Capillary shashlik cell against charged hadrons

Proton-Induced Radiation Damage in BaF_2, LYSO and PWO Crystal Scintillators

Future high energy physics experiments at the energy and intensity frontiers will face a challenge of severe radiation environment from both ionization dose and charged and neutral hadrons. The high luminosity large hadron collider, for example, will present an environment, where up to 130 Mrad ionization dose, 3×10^(14) charged hadrons/cm^2 and 5×10^(15) neutrons/cm^2 are expected. In this paper, we report our investigation on charged hadron induced radiation damage in BaF_2, LYSO/LFS and PWO crystals up to 3×10^(15) protons/cm^2 by using 800 MeV protons at the Los Alamos Neutron Science Center. Comparison is made between radiation damages induced by protons and ionization dose alone

Proton-Induced Radiation Damage in BaF_2, LYSO and PWO Crystal Scintillators

Future high energy physics experiments at the energy and intensity frontiers will face a challenge of severe radiation environment from both ionization dose and charged and neutral hadrons. The high luminosity large hadron collider, for example, will present an environment, where up to 130 Mrad ionization dose, 3×10^(14) charged hadrons/cm^2 and 5×10^(15) neutrons/cm^2 are expected. In this paper, we report our investigation on charged hadron induced radiation damage in BaF_2, LYSO/LFS and PWO crystals up to 3×10^(15) protons/cm^2 by using 800 MeV protons at the Los Alamos Neutron Science Center. Comparison is made between radiation damages induced by protons and ionization dose alone