Modelling the behaviour of microbulk Micromegas in xenon/trimethylamine gas
Ruiz Chóliz, Elisa (Universidad de Zaragoza) ; González-Díaz, D. ; Diago, A. ; Castel Pablo, Juan Francisco ; Dafni , Theopisti (Universidad de Zaragoza) ; Herrera, D.C. ; Iguaz Gutiérrez, Francisco José (Universidad de Zaragoza) ; García Irastorza, Igor (Universidad de Zaragoza) ; Luzón Marco, Gloria (Universidad de Zaragoza) ; Mirallas Sánchez, Héctor ; Sahin, O. ; Veenhof, R.
Resumen: We model the response of a state of the art micro-hole single-stage charge amplification device ('microbulk' Micromegas) in a gaseous atmosphere consisting of xenon/trimethylamine at various concentrations and pressures. The amplifying structure, made with photo-lithographic techniques similar to those followed in the fabrication of gas electron multipliers (GEMs), consisted of a 100 mu m-side equilateral-triangle pattern with 50 pm-diameter holes placed at its vertexes. Once the primary electrons are guided into the holes by virtue of an optimized field configuration, avalanches develop along the 50 [an-height channels etched out of the original doubly copper-clad polyimide foil. In order to properly account for the strong field gradients at the holes' entrance as well as for the fluctuations of the avalanche process (that ultimately determine the achievable energy resolution), we abandoned the hydrodynamic framework, resorting to a purely microscopic description of the electron trajectories as obtained from elementary cross-sections. We show that achieving a satisfactory description needs additional assumptions about atom-molecule (Penning) transfer reactions and charge recombination to be made. (C) 2015 Elsevier B.V. All rights reserved.
Idioma: Inglés
DOI: 10.1016/j.nima.2015.07.062
Año: 2015
Publicado en: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 799 (2015), 137-146
ISSN: 0168-9002
Factor impacto JCR: 1.2 (2015)
Categ. JCR: NUCLEAR SCIENCE & TECHNOLOGY rank: 9 / 32 = 0.281 (2015) - Q2 - T1
Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 31 / 56 = 0.554 (2015) - Q3 - T2
Categ. JCR: SPECTROSCOPY rank: 28 / 43 = 0.651 (2015) - Q3 - T2
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 24 / 28 = 0.857 (2015) - Q4 - T3
Financiación: info:eu-repo/grantAgreement/EUR/FP7/ERC2009-StG-240054
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio-2010/CSD2008-00037
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2008-03456
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2009-13697
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085-P
Tipo y forma: Article (Published version)
Área (Departamento): Física Atómica, Molecular y Nuclear (Departamento de Física Teórica)
0
Exportado de SIDERAL (2016-11-28-12:09:02)
Idioma: Inglés
DOI: 10.1016/j.nima.2015.07.062
Año: 2015
Publicado en: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 799 (2015), 137-146
ISSN: 0168-9002
Factor impacto JCR: 1.2 (2015)
Categ. JCR: NUCLEAR SCIENCE & TECHNOLOGY rank: 9 / 32 = 0.281 (2015) - Q2 - T1
Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 31 / 56 = 0.554 (2015) - Q3 - T2
Categ. JCR: SPECTROSCOPY rank: 28 / 43 = 0.651 (2015) - Q3 - T2
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 24 / 28 = 0.857 (2015) - Q4 - T3
Financiación: info:eu-repo/grantAgreement/EUR/FP7/ERC2009-StG-240054
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio-2010/CSD2008-00037
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2008-03456
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2009-13697
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085-P
Tipo y forma: Article (Published version)
Área (Departamento): Física Atómica, Molecular y Nuclear (Departamento de Física Teórica)
0
Exportado de SIDERAL (2016-11-28-12:09:02)
Este artículo se encuentra en las siguientes colecciones:
articulos > articulos-por-area > fisica_atomica,_molecular_y_nuclear
Notice créée le 2016-11-28, modifiée le 2016-11-29
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