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Radiation imaging with glass Micromegas.

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Title: Radiation imaging with glass Micromegas.
Authors: Brunbauer, F.M.1 (AUTHOR), Desforge, D.2 (AUTHOR), Ferrer-Ribas, E.2 (AUTHOR), Iguaz, F.J.2 (AUTHOR), Mehl, B.1 (AUTHOR), De Oliveira, R.1 (AUTHOR), Oliveri, E.1 (AUTHOR), Papaevangelou, T.2 (AUTHOR), Pizzirusso, O.1 (AUTHOR), Pollacco, E.C.1,2 (AUTHOR) emmanuel.pollacco@cea.fr, Resnati, F.1 (AUTHOR), Ropelewski, L.1 (AUTHOR), Segui, L.2 (AUTHOR), van Stenis, M.1 (AUTHOR)
Source: Nuclear Instruments & Methods in Physics Research Section A. Mar2020, Vol. 955, pN.PAG-N.PAG. 1p.
Subjects: Photodetectors, X-ray fluorescence, Radiation, X-ray detection, CCD cameras, X-ray imaging
Abstract: Optically recording scintillation light emitted by MicroPattern Gaseous Detectors (MPGDs) with imaging sensors is a versatile and performant readout modality taking advantage of modern high granularity imaging sensors. To allow scintillation light readout of a detector based on MicroMesh Gaseous Structure (Micromegas) technology, we have integrated a Micromegas on a glass substrate with a transparent anode. In addition to optical detection of scintillation light emitted during electron avalanche multiplication between the micromesh and the anode, this setup also achieves a good energy resolution. A glass Micromegas detector was operated in an Ar/CF 4 gas mixture and showed a response comparable to conventional Micromegas detectors. The spectrum of the emitted scintillation light was recorded and shown to be equivalent to the one obtained with other gaseous detectors in the same gas mixture. Optically read out images were recorded with CCD cameras and integrated X-ray radiographic imaging with good spatial resolution was demonstrated. A spatial resolution of 440 μ m (10% MTF) was found. Single X-ray photon detection with a high-sensitivity camera was achieved, which potentially permits energy-resolved X-ray fluorescence imaging. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 141637207
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Radiation imaging with glass Micromegas.
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Mar2020, Vol. 955, pN.PAG-N.PAG. 1p.
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  Label: Abstract
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  Data: Optically recording scintillation light emitted by MicroPattern Gaseous Detectors (MPGDs) with imaging sensors is a versatile and performant readout modality taking advantage of modern high granularity imaging sensors. To allow scintillation light readout of a detector based on MicroMesh Gaseous Structure (Micromegas) technology, we have integrated a Micromegas on a glass substrate with a transparent anode. In addition to optical detection of scintillation light emitted during electron avalanche multiplication between the micromesh and the anode, this setup also achieves a good energy resolution. A glass Micromegas detector was operated in an Ar/CF 4 gas mixture and showed a response comparable to conventional Micromegas detectors. The spectrum of the emitted scintillation light was recorded and shown to be equivalent to the one obtained with other gaseous detectors in the same gas mixture. Optically read out images were recorded with CCD cameras and integrated X-ray radiographic imaging with good spatial resolution was demonstrated. A spatial resolution of 440 μ m (10% MTF) was found. Single X-ray photon detection with a high-sensitivity camera was achieved, which potentially permits energy-resolved X-ray fluorescence imaging. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=141637207
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        Value: 10.1016/j.nima.2019.163320
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        Text: English
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      – SubjectFull: X-ray fluorescence
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      – SubjectFull: Radiation
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      – SubjectFull: X-ray detection
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      – SubjectFull: CCD cameras
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