An electromagnetic physics constructor for low energy polarised X-/gamma ray transport in Geant4
| Autor: | Jeremy M. C. Brown, Matthew Richard Dimmock |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Nuclear and High Energy Physics X-ray astronomy Gamma-ray astronomy Astrophysics::High Energy Astrophysical Phenomena Monte Carlo method Compton scattering Polarimetry Gamma ray FOS: Physical sciences Geant4 Computational Physics (physics.comp-ph) Synchrotron Synchrotron radiation facility Computational physics law.invention Beamline law Polarized gamma ray Physics - Computational Physics Instrumentation |
| Zdroj: | Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 502 |
| ISSN: | 0168-583X |
| Popis: | The production, application, and/or measurement of polarised X-/gamma rays are key to the fields of synchrotron science and X-/gamma-ray astronomy. The design, development and optimisation of experimental equipment utilised in these fields typically relies on the use of Monte Carlo radiation transport modelling toolkits such as Geant4. In this work the Geant4 "G4LowEPPhysics" electromagnetic physics constructor has been reconfigured to offer a "best set" of electromagnetic physics models for studies exploring the transport of low energy polarised X-/gamma rays. An overview of the physics models implemented in "G4LowEPPhysics", and it's experimental validation against Compton X-ray polarimetry measurements of the BL38B1 beamline at the SPring-8 synchrotron (Sayo, Japan) is reported. "G4LowEPPhysics" is shown to be able to reproduce the experimental results obtained at the BL38B1 beamline (SPring-8) to within a level of accuracy on the same order as Geant4's X-/gamma ray interaction cross-sectional data uncertainty (approximately $\pm$ 5 \%). Comment: Geant4, Polarized gamma ray, Compton scattering, X-ray astronomy, Gamma-ray astronomy, Synchrotron radiation facility |
| Databáze: | OpenAIRE |
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