Transmission calculation by empirical numerical model and Monte Carlo simulation in high energy proton radiography of thick objects

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ZHENG Na and XU Hai-Bo. Transmission calculation by empirical numerical model and Monte Carlo simulation in high energy proton radiography of thick objects[J]. Chinese Physics C, 2015, 39(10): 108201. doi: 10.1088/1674-1137/39/10/108201
ZHENG Na and XU Hai-Bo. Transmission calculation by empirical numerical model and Monte Carlo simulation in high energy proton radiography of thick objects[J]. Chinese Physics C, 2015, 39(10): 108201.  doi: 10.1088/1674-1137/39/10/108201 shu
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Received: 2014-10-20
Revised: 2015-06-01
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Transmission calculation by empirical numerical model and Monte Carlo simulation in high energy proton radiography of thick objects

    Corresponding author: XU Hai-Bo,

Abstract: An empirical numerical model that includes nuclear absorption, multiple Coulomb scattering and energy loss is presented for the calculation of transmission through thick objects in high energy proton radiography. In this numerical model the angular distributions are treated as Gaussians in the laboratory frame. A Monte Carlo program based on the Geant4 toolkit was developed and used for high energy proton radiography experiment simulations and verification of the empirical numerical model. The two models are used to calculate the transmission fraction of carbon and lead step-wedges in proton radiography at 24 GeV/c, and to calculate radial transmission of the French Test Object in proton radiography at 24 GeV/c with different angular cuts. It is shown that the results of the two models agree with each other, and an analysis of the slight differences is given.

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