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Spatial resolution studies using point spread function extraction in optically read out Micromegas and GEM detectors.

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Title: Spatial resolution studies using point spread function extraction in optically read out Micromegas and GEM detectors.
Authors: Cools, A.1 (AUTHOR), Ferrer-Ribas, E.1 (AUTHOR) esther.ferrer-ribas@cea.Fr, Papaevangelou, T.1 (AUTHOR), Pollacco, E.C.1 (AUTHOR), Lisowska, M.2 (AUTHOR), Brunbauer, F.M.2 (AUTHOR), Oliveri, E.2 (AUTHOR), Iguaz, F.J.3 (AUTHOR)
Source: Nuclear Instruments & Methods in Physics Research Section A. Dec2024, Vol. 1069, pN.PAG-N.PAG. 1p.
Subjects: Photomultipliers, X-ray imaging, Image converters, Image reconstruction, Spatial resolution
Abstract: Optically read out gaseous detectors are used in track reconstruction and imaging applications requiring high granularity images. Among resolution-determining factors, the amplification stage plays a crucial role and optimizations of detector geometry are pursued to maximize spatial resolution. To compare Micro Pattern Gaseous Detector (MPGD) technologies, focused low-energy X-ray beams at the SOLEIL synchrotron facility were used to record and extract point spread function widths with MICRO-Mesh Gaseous Structure (icromegas) and Gas Electron Multiplier (GEM) detectors. Point spread function width of ≈ 108 µm for Micromegas and ≈ 127 µm for GEM foils were extracted. The scanning of the beam with different intensities, energies and across the detector active region can be used to quantify resolution-limiting factors and improve imaging detectors using MPGD amplification stages. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Optically read out gaseous detectors are used in track reconstruction and imaging applications requiring high granularity images. Among resolution-determining factors, the amplification stage plays a crucial role and optimizations of detector geometry are pursued to maximize spatial resolution. To compare Micro Pattern Gaseous Detector (MPGD) technologies, focused low-energy X-ray beams at the SOLEIL synchrotron facility were used to record and extract point spread function widths with MICRO-Mesh Gaseous Structure (icromegas) and Gas Electron Multiplier (GEM) detectors. Point spread function width of ≈ 108 µm for Micromegas and ≈ 127 µm for GEM foils were extracted. The scanning of the beam with different intensities, energies and across the detector active region can be used to quantify resolution-limiting factors and improve imaging detectors using MPGD amplification stages. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2024.169933