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Integration of polarization in the LUTDavis Model for optical Monte Carlo simulation in radiation detectors
- Source :
- Phys Med Biol, Physics in medicine and biology, vol 66, iss 21
- Publication Year :
- 2021
-
Abstract
- OBJECTIVE Cerenkov photons have distinctive features from scintillation photons. Among them is their polarization: their electric field is always perpendicular to the direction of propagation of light and parallel to the plane of incidence. Scintillation photons are instead considered unpolarized. APPROACH This study aims at understanding and optimizing the reflectance of polarized Cerenkov photons for optical Monte Carlo simulation of scintillation detectors with Geant4/GATE. First, the Cerenkov emission spectrum and polarization were implemented in the previously developed look-up-table Davis model of crystal reflectance. Next, we modified Geant4/GATE source code to account for scintillation and Cerenkov photons LUTs simultaneously. Then, we performed optical Monte Carlo simulations in BGO using GATE to show the effect of Cerenkov features on the photons' momentum at the photodetector face, using two surface finishes, with and without reflector. MAIN RESULTS In this work, we describe the new features added to the algorithm and GATE. We showed that Cerenkov characteristics affect their probability to be reflected/refracted and thus their travel path within a material. SIGNIFICANCE We showed the importance of accounting for accurate Cerenkov photons reflectance while performing advanced optical Monte Carlo simulations.
- Subjects :
- Photon
Physics::Instrumentation and Detectors
Plane of incidence
Clinical Sciences
Monte Carlo method
Biomedical Engineering
Geant4
Physics::Optics
Photodetector
Particle detector
Article
Optics
Geant4/GATE
Photon polarization
Radiology, Nuclear Medicine and imaging
Computer Simulation
photon polarization
Physics
Scintillation
Photons
Radiological and Ultrasound Technology
business.industry
GATE
Polarization (waves)
LUT Davis model
Other Physical Sciences
Nuclear Medicine & Medical Imaging
Cerenkov photons
business
Monte Carlo Method
Algorithms
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Phys Med Biol, Physics in medicine and biology, vol 66, iss 21
- Accession number :
- edsair.doi.dedup.....30708e77360d5d3c2d5f4d46ce522939