Energy resolution of alpha particles in a microbulk Micromegas detector at high pressure argon and xenon mixtures
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| Title: | Energy resolution of alpha particles in a microbulk Micromegas detector at high pressure argon and xenon mixtures |
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| Authors: | Dafni, T.1, Ferrer-Ribas, E.2, Giomataris, I.2, Gorodetzky, Ph.3, Iguaz, F.1, Irastorza, I.G.1 Igor.Irastorza@cern.ch, Salin, P.3, Tomás, A.1 |
| Source: | Nuclear Instruments & Methods in Physics Research Section A. Sep2009, Vol. 608 Issue 2, p259-266. 8p. |
| Subjects: | Gas detectors, Alpha rays, Argon, Xenon, Atmospheric pressure, Beta decay |
| Abstract: | Abstract: The latest micromesh gas amplification structures (Micromegas) are achieving outstanding energy resolution for low energy photons, with values as low as 11% FWHM for the 5.9keV line of 55Fe in argon/isobutane mixtures at atmospheric pressure. At higher energies (MeV scale), these measurements are more complicated due to the difficulty in confining the events in the chamber, although there is no fundamental reason why resolutions of 1% FWHM or below could not be reached. There is much motivation to demonstrate experimentally this fact in Xe mixtures due to the possible application of Micromegas readouts to the double beta decay search of 136Xe, or in other experiments needing calorimetry and topology in the same detector. In this paper, we report on systematic measurements of energy resolution with state-of-the-art Micromegas using a 5.5MeV alpha source in high pressure Ar/isobutane mixtures. Values as low as 1.8% FWHM have been obtained, with possible evidence that better resolutions are achievable. Similar measurements in Xe, of which a preliminary result is also shown here, are under progress. [Copyright &y& Elsevier] |
| 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 44008703 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Energy resolution of alpha particles in a microbulk Micromegas detector at high pressure argon and xenon mixtures – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dafni%2C+T%2E%22">Dafni, T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ferrer-Ribas%2C+E%2E%22">Ferrer-Ribas, E.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Giomataris%2C+I%2E%22">Giomataris, I.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Gorodetzky%2C+Ph%2E%22">Gorodetzky, Ph.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Iguaz%2C+F%2E%22">Iguaz, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Irastorza%2C+I%2EG%2E%22">Irastorza, I.G.</searchLink><relatesTo>1</relatesTo><i> Igor.Irastorza@cern.ch</i><br /><searchLink fieldCode="AR" term="%22Salin%2C+P%2E%22">Salin, P.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Tomás%2C+A%2E%22">Tomás, A.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Sep2009, Vol. 608 Issue 2, p259-266. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Alpha+rays%22">Alpha rays</searchLink><br /><searchLink fieldCode="DE" term="%22Argon%22">Argon</searchLink><br /><searchLink fieldCode="DE" term="%22Xenon%22">Xenon</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+pressure%22">Atmospheric pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Beta+decay%22">Beta decay</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The latest micromesh gas amplification structures (Micromegas) are achieving outstanding energy resolution for low energy photons, with values as low as 11% FWHM for the 5.9keV line of 55Fe in argon/isobutane mixtures at atmospheric pressure. At higher energies (MeV scale), these measurements are more complicated due to the difficulty in confining the events in the chamber, although there is no fundamental reason why resolutions of 1% FWHM or below could not be reached. There is much motivation to demonstrate experimentally this fact in Xe mixtures due to the possible application of Micromegas readouts to the double beta decay search of 136Xe, or in other experiments needing calorimetry and topology in the same detector. In this paper, we report on systematic measurements of energy resolution with state-of-the-art Micromegas using a 5.5MeV alpha source in high pressure Ar/isobutane mixtures. Values as low as 1.8% FWHM have been obtained, with possible evidence that better resolutions are achievable. Similar measurements in Xe, of which a preliminary result is also shown here, are under progress. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.nima.2009.06.099 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 259 Subjects: – SubjectFull: Gas detectors Type: general – SubjectFull: Alpha rays Type: general – SubjectFull: Argon Type: general – SubjectFull: Xenon Type: general – SubjectFull: Atmospheric pressure Type: general – SubjectFull: Beta decay Type: general Titles: – TitleFull: Energy resolution of alpha particles in a microbulk Micromegas detector at high pressure argon and xenon mixtures Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dafni, T. – PersonEntity: Name: NameFull: Ferrer-Ribas, E. – PersonEntity: Name: NameFull: Giomataris, I. – PersonEntity: Name: NameFull: Gorodetzky, Ph. – PersonEntity: Name: NameFull: Iguaz, F. – PersonEntity: Name: NameFull: Irastorza, I.G. – PersonEntity: Name: NameFull: Salin, P. – PersonEntity: Name: NameFull: Tomás, A. IsPartOfRelationships: – BibEntity: Dates: – D: 11 M: 09 Text: Sep2009 Type: published Y: 2009 Identifiers: – Type: issn-print Value: 01689002 Numbering: – Type: volume Value: 608 – Type: issue Value: 2 Titles: – TitleFull: Nuclear Instruments & Methods in Physics Research Section A Type: main |
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