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High-contrast low-dose proton radiography of thin samples at the Tandetron accelerator
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SYSNO ASEP 0565832 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title High-contrast low-dose proton radiography of thin samples at the Tandetron accelerator Author(s) Olšanský, Václav (UJF-V) ORCID
Granja, C. (CZ)
Oancea, C. (CZ)
Krist, Pavel (UJF-V) RID, ORCID, SAI
Macková, Anna (UJF-V) RID, ORCID, SAI
Havránek, Vladimír (UJF-V) RID, SAI, ORCID
Bíla, J. (CZ)Number of authors 7 Article number 01005 Source Title EPJ Web of Conferences, 261. - Les ulis : EDP sciences, 2022 Number of pages 8 s. Publication form Online - E Action Applied Nuclear Physics Conference (ANPC 2021) Event date 12.09.2021 - 17.09.2021 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country FR - France Keywords pixel detectors ; micro beam OECD category Nuclear related engineering Research Infrastructure CANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i. Institutional support UJF-V - RVO:61389005 DOI 10.1051/epjconf/202226101005 Annotation We investigate the ability of using high-resolution position-sensitive pixel detector and standard non-scanning beams of low-energy protons in air as a flexible tool and simplified technique for density-sensitivity imaging of thin samples. Proton radiography can provide high contrast and low radiation dose delivered to the inspected sample. Density-sensitive contrast response can be provided by a single proton per imaging pixel. For this purpose, we use the silicon semiconductor high-resolution pixel detector Timepix3 to evaluate particle radiography of thin samples with monoenergetic low-energy proton beams from the Tandetron light-ion accelerator. Measurements were performed with various well-defined thin samples. A proton micro beam was used to test and evaluate the technique. Spatial information of the samples is provided by the imaging detector. Density-sensitive contrast is obtained from the measurement of small differences in the deposited energy of transmitted protons across the sample. The transmitted protons are detected with high spatial resolution in the pixel detector. The single particle tracks registered in the detector are analysed by detailed pattern recognition algorithms. Various of these track parameters of spectral response are used for imaging contrast. Resulting proton radiographies for various well-defined thin samples are presented. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2023 Electronic address https://doi.org/10.1051/epjconf/202226101005
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