Experimental verification of the PRIORA Monte Carlo code for proton radiography
Abstract
PRIORA (Proton Radiography Ion-Optical Ray-tracing Analysis) is a fast Monte Carlo model for high-energy proton radiography. It combines fitted proton-matter interaction tables with energy-dependent transfer maps of arbitrary order and simulates approximately 106 protons/s through a complete ion-optical system on an 8-core laptop. We verify it with GSI data obtained with the Ta_bench target: fifteen precision slits in a 2 mm Ta plate between symmetric PMMA staircases. A single experimental image provides the image scale, spatial resolution as a function of chromatic load, the direction of longitudinal defocus in both transverse planes, effective angular acceptance and multiple-scattering contrast. With identical processing of experiment and simulation and no physics adjustment, PRIORA reproduces the data obtained with 2 and 4 GeV protons. At 2 GeV, PRIORA also recovers sub-percent quadrupole trims consistent with the control-system records and determines a target-plane spatial resolution of 115±6 μm.
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BibTeX
@misc{varentsov2026experimental,
title = {{Experimental verification of the PRIORA Monte Carlo code for proton radiography}},
author = {Dmitry Varentsov and Martin Schanz and John Schmidt},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.26121},
eprint = {2610.26121},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.26121},
}
RIS
TY - UNPB
TI - Experimental verification of the PRIORA Monte Carlo code for proton radiography
AU - Dmitry Varentsov
AU - Martin Schanz
AU - John Schmidt
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.26121
UR - https://arxiv.org/abs/2610.26121
AB - PRIORA (Proton Radiography Ion-Optical Ray-tracing Analysis) is a fast Monte Carlo model for high-energy proton radiography. It combines fitted proton-matter interaction tables with energy-dependent transfer maps of arbitrary order and simulates approximately 10^6 protons/s through a complete ion-optical system on an 8-core laptop. We verify it with GSI data obtained with the Ta_bench target: fifteen precision slits in a 2 mm Ta plate between symmetric PMMA staircases. A single experimental image provides the image scale, spatial resolution as a function of chromatic load, the direction of longitudinal defocus in both transverse planes, effective angular acceptance and multiple-scattering contrast. With identical processing of experiment and simulation and no physics adjustment, PRIORA reproduces the data obtained with 2 and 4 GeV protons. At 2 GeV, PRIORA also recovers sub-percent quadrupole trims consistent with the control-system records and determines a target-plane spatial resolution of 115±6 μm.
ER -