Optimization of GEM-based detector readout electrode structure for SXR imaging of tokamak plasma

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dc.contributor.authorMalinowski, Karol
dc.contributor.authorChernyshova, Maryna
dc.contributor.authorJabłoński, Sławomir
dc.contributor.authorCasiraghi, Irene
dc.contributor.organizationInstitute of Plasma Physics and Laser Microfusion, Warsaw, Polanden
dc.contributor.organizationUniversity of Milano-Bicocca, Milano, Italyen
dc.date.accessioned2023-03-30T14:17:23Z
dc.date.available2023-03-30T14:17:23Z
dc.date.issued2021-11
dc.descriptionThe Version of Record is available online at DOI: 10.1088/1748-0221/16/11/C11014en
dc.description.abstractThe paper presents an optimization of a readout structure of the GEM-based detector designed for X-ray imaging for DTT tokamak in the energy range of 2–15 keV. The readout electrode of approximately 100 cm2 surface is composed of hexagonal pixels connected in a way that allows reducing the actual number of signal pixels (electronics channels). At the same time, based on time coincidence analysis, it makes possible to unambiguously identify the position of the recorded X-ray photon. For the input spectrum, the Detective Quantum Efficiency (DQE) of the detector was calculated using the Geant4 program and the spatial distributions of electron avalanches at the readout electrode were simulated using the Garfield++ program. These were conducted for a given energy range of radiation and a statistical distribution consistent with the shape of the spectrum considering the DQE of the detector. As a result, the size of a single hexagonal pixel was proposed to capture the position of the recorded radiation quanta in an optimal and effective way.en
dc.description.sponsorshipThis work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom Research and Training Programme 2014-2018 and 2019-2020 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This scientific paper has been published as part of the international project co-financed by the Polish Ministry of Science and Higher Education within the programme called ‘PMW’ for 2021. This work has been partially carried out within the research project No. 2020/39/B/ST2/02681 financed by the National Science Center.
dc.identifier.citationK. Malinowski et al 2021 JINST 16 C11014en
dc.identifier.issn1748-0221
dc.identifier.urihttps://open.icm.edu.pl/handle/123456789/22448
dc.language.isoen
dc.publisherIOP Publishing Ltd for Sissa Medialaben
dc.relationOPUS-20en
dc.rightsUznanie autorstwa 3.0 Polska*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/pl/*
dc.subjectmicropattern gaseous detectorsen
dc.titleOptimization of GEM-based detector readout electrode structure for SXR imaging of tokamak plasmaen
dc.typearticleen
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