Electron energy and charge albedos - calorimetric measurement vs Monte Carlo theory

Lockwood, G. J.; Ruggles, L. E.; Miller, Glenn H.; Halbleib, J.A.

doi:10.2172/5018508

Cited by 17 publications

(39 citation statements)

References 3 publications

(3 reference statements)

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“…This validation study covers two experimental scenarios: the longitudinal pattern of the energy deposited by electrons in a segmented calorimeter, and the total energy deposited in a bulk calorimeter. Test cases, characterized by electron energy, beam incidence angle and target material, are reproduced in the simulation for both scenarios according to the respective experimental references [1], [3]. The test cases involving uranium as target material are not considered in the validation process, since concerns were expressed about the presence of systematic errors in the calorimeter data for this material [3].…”

Section: Strategy Of This Studymentioning

confidence: 99%

“…The statistical Version Identifier Patched Geant4 Version 9.1 9.1p03 9.2 9.2p04 9. 3 9.3p02 9. 4 9.4p04 9.…”

Section: Strategy Of This Studymentioning

confidence: 99%

“…Sketch of the geometrical configuration corresponding to the experimental set-up of [3] for the test of total energy deposition. deexcitation [44] following the creation of a vacancy in atomic shell occupation is activated in the physics processes and models to which it is pertinent.…”

Section: Simulation Configurationmentioning

confidence: 99%

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Validation of Geant4 Simulation of Electron Energy Deposition

Batič

Hoff

Pia

et al. 2013

IEEE Trans. Nucl. Sci.

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Abstract-Geant4-based simulations of the energy deposited by electrons in various materials are quantitatively compared to high precision calorimetric measurements taken at Sandia Laboratories. The experimental data concern electron beams of energy between a few tens of keV and 1 MeV at various incidence angles. Two experimental scenarios are evaluated: the longitudinal energy deposition pattern in a finely segmented detector, and the total energy deposited in a larger size calorimeter. The simulations are produced with Geant4 versions from 9.1 to 9.6; they involve models of electron-photon interactions in the standard and low energy electromagnetic packages, and various implementations of electron multiple scattering. Significant differences in compatibility with experimental data are observed in the longitudinal energy deposition patterns produced by the examined Geant4 versions, while the total deposited energy exhibits smaller variations across the various Geant4 versions, with the exception Geant4 9.4. The validation analysis, based on statistical methods, shows that the best compatibility between simulation and experimental energy deposition profiles is achieved using electromagnetic models based on the EEDL and EPDL evaluated data libraries with Geant4 9.1. The results document the accuracy achievable in the simulation of the energy deposited by low energy electrons with Geant4; they provide guidance for application in similar experimental scenarios and for improving Geant4.

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Section: Strategy Of This Studymentioning

confidence: 99%

“…The statistical Version Identifier Patched Geant4 Version 9.1 9.1p03 9.2 9.2p04 9. 3 9.3p02 9. 4 9.4p04 9.…”

Section: Strategy Of This Studymentioning

confidence: 99%

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Validation of Geant4 Simulation of Electron Energy Deposition

Batič

Hoff

Pia

et al. 2013

IEEE Trans. Nucl. Sci.

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“…Various electron backscattering calculations have shown that for a given incident electron energy, the fraction of the electron beam energy deposited in the anode decreases as this incident angle decreases. In addition, an analysis of the results obtained in a previous study given in reference [ 1 ] (page 34) shows that the total x-ray energy output from the anode is not linearly proportional to the electron energy deposited in the target for different incident angles of the electron beam. The implication of this result is that for a given tube kilovoltage, there is an optimum tube geometry involving the incident electron beam angle and the x-ray emission angle, which provides the maximum value for the x-ray output energy per unit electron beam energy deposited in the anode.…”

Section: Introductionmentioning

confidence: 92%

Sealed Rotating Anode X-Ray Tube with Enhanced Power and Duty Cycle

Motz¹

1990

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“…Quantitative evaluations [1], [2] of the capability of Geant4 [3], [4] to reproduce high precision measurements of the energy deposited by low energy electrons in various targets [5], [6] hint at a significant contribution of multiple scattering Manuscript implementations to determine the accuracy of the simulated energy deposition.…”

Section: Introductionmentioning

confidence: 99%

Validation Test of Geant4 Simulation of Electron Backscattering

Kim

Pia

Basaglia

et al. 2015

IEEE Trans. Nucl. Sci.

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Backscattering is a sensitive probe of the accuracy of electron scattering algorithms implemented in Monte Carlo codes. The capability of the Geant4 toolkit to describe realistically the fraction of electrons backscattered from a target volume is extensively and quantitatively evaluated in comparison with experimental data retrieved from the literature. The validation test covers the energy range between approximately 100 eV and 20 MeV, and concerns a wide set of target elements. Multiple and single electron scattering models implemented in Geant4, as well as preassembled selections of physics models distributed within Geant4, are analyzed with statistical methods. The evaluations concern Geant4 versions from 9.1 to 10.1. Significant evolutions are observed over the range of Geant4 versions, not always in the direction of better compatibility with experiment. Goodness-of-fit tests complemented by categorical analysis tests identify a configuration based on Geant4 Urban multiple scattering model in Geant4 version 9.1 and a configuration based on single Coulomb scattering in Geant4 10.0 as the physics options best reproducing experimental data above a few tens of keV. At lower energies only single scattering demonstrates some capability to reproduce data down to a few keV. Recommended preassembled physics configurations appear incapable of describing electron backscattering compatible with experiment. With the support of statistical methods, a correlation is established between the validation of Geant4-based simulation of backscattering and of energy deposition

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Electron energy and charge albedos - calorimetric measurement vs Monte Carlo theory

Cited by 17 publications

References 3 publications

Validation of Geant4 Simulation of Electron Energy Deposition

Validation of Geant4 Simulation of Electron Energy Deposition

Sealed Rotating Anode X-Ray Tube with Enhanced Power and Duty Cycle

Validation Test of Geant4 Simulation of Electron Backscattering

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