BaF2:Y and ZnO:Ga crystal scintillators for GHz hard X-ray imaging
Abstract
Gigahertz (GHz) hard X-ray imaging for the proposed MaRIE project presents an unprecedented challenge for the front imager in both speed and radiation hardness. We proposed two ultrafast inorganic-scintillator-based front imager concepts: a total absorption one and a multilayer one, and investigated optical and scintillation properties for a set of inorganic scintillators at the Caltech HEP crystal laboratory. The results show that yttrium doped barium fluoride crystals and gallium doped ZnO nano-particle-based films are promising for these two concepts, respectively. In this paper, we report their optical and scintillation property as well recent progresses on slow component suppressing in barium fluoride crystals by yttrium doping, and its radiation hardness.
- Publication:
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Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- January 2020
- DOI:
- 10.1016/j.nima.2019.162767
- Bibcode:
- 2020NIMPA.95062767H
- Keywords:
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- Ultrafast crystal;
- Ultrafast photodetector;
- Hard X-ray imaging;
- Microchannel plate photomultiplier;
- Rise time;
- Decay time;
- FWHM pulse width