Characterization of Scintillation Quenching in GAGG:Ce Crystals
ORAL
Abstract
Charged particles within the earth’s magnetosphere can have significant effects
on communications, avionics, and power grids. The charged particle flux in
orbit can be measured with scintillation detectors; however, quenching effects
significantly reduce light output, so precise measurements of detector response
are required to accurately reconstruct incident spectra for space weather mod-
els. Cerium-doped Gadolinium Aluminum Gallium Garnet (GAGG:Ce) is a
recently-developed scintillator that is well-suited for high rate measurements in
the space environment. In this talk, we will present our plan to measure the
quenched charged particle response of GAGG:Ce crystals from different manu-
facturers. Our detectors consist of 10 mm diameter GAGG:Ce crystals coupled
to a PIN photodiode, which will be tested at accelerator facilities at Texas
A&M University and Los Alamos National Laboratory. We will utilize elastic
scattering and nucleon transfer reactions to achieve a broad range of proton
energies. The charged particle response data will be compared to predictions
from different models of scintillation quenching.
on communications, avionics, and power grids. The charged particle flux in
orbit can be measured with scintillation detectors; however, quenching effects
significantly reduce light output, so precise measurements of detector response
are required to accurately reconstruct incident spectra for space weather mod-
els. Cerium-doped Gadolinium Aluminum Gallium Garnet (GAGG:Ce) is a
recently-developed scintillator that is well-suited for high rate measurements in
the space environment. In this talk, we will present our plan to measure the
quenched charged particle response of GAGG:Ce crystals from different manu-
facturers. Our detectors consist of 10 mm diameter GAGG:Ce crystals coupled
to a PIN photodiode, which will be tested at accelerator facilities at Texas
A&M University and Los Alamos National Laboratory. We will utilize elastic
scattering and nucleon transfer reactions to achieve a broad range of proton
energies. The charged particle response data will be compared to predictions
from different models of scintillation quenching.
*This research was supported by the U.S. Department of Energy (DOE) [DOE-FG02-93ER40773, DOE-NA0004150].
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Presenters
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Nicholas C Floyd
- Los Alamos National Laboratory (LANL)