|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
20 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy gamma-rays | | NEXT collaboration
; V. Alvarez
; F.I.G.M. Borges
; S. Carcel
; J. Castel
; S. Cebrian
; A. Cervera
; C.A.N. Conde
; T. Dafni
; T.H.V.T. Dias
; J. Diaz
; M. Egorov
; R. Esteve
; P. Evtoukhovitch
; L.M.P. Fernandes
; P. Ferrario
; A.L. Ferreira
; E.D.C. Freitas
; V.M. Gehman
; A. Gil
; A. Goldschmidt
; H. Gomez
; J.J. Gomez-Cadenas
; D. Gonzalez-Diaz
; R.M. Gutierrez
; J. Hauptman
; J.A. Hernando Morata
; D.C. Herrera
; F.J. Iguaz
; I.G. Irastorza
; M.A. Jinete
; L. Labarga
; A. Laing
; I. Liubarsky
; J.A.M. Lopes
; D. Lorca
; M. Losada
; G. Luzon
; A. Mari
; J. Martin-Albo
; A. Martinez
; G. Martinez-Lema
; T. Miller
; A. Moiseenko
; F. Monrabal
; C.M.B. Monteiro
; F.J. Mora
; L.M. Moutinho
; J. Munoz Vidal
; H. Natal da Luz
; G. Navarro
; M. Nebot-Guinot
; D. Nygren
; C.A.B. Oliveira
; R. Palma
; J. Perez
; J.L. Perez Aparicio
; J. Renner
; L. Ripoll
; A. Rodriguez
; J. Rodriguez
; F.P. Santos
; J.M.F. dos Santos
; L. Segui
; L. Serra
; D. Shuman
; A. Simon
; C. Sofka
; M. Sorel
; J.F. Toledo
; A. Tomas
; J. Torrent
; Z. Tsamalaidze
; D. Vazquez
; J.F.C.A. Veloso
; J.A. Villar
; R.C. Webb
; J.T. White
; N. Yahlali
; F. Aznar
; D. Calvet
; F. Druillole
; E. Ferrer-Ribas
; J. A. Garcia
; I. Giomataris
; J. Gracia
; A. Le Coguie
; J.P. Mols
; P. Pons
; E. Ruiz
; | | Date: |
14 Nov 2013 | | Abstract: | NEXT-MM is a general-purpose high pressure (10 bar, $sim25$ l active volume)
Xenon-based TPC, read out in charge mode with an 8 cm $ imes$8 cm-segmented
700 cm$^2$ plane (1152 ch) of the latest microbulk-Micromegas technology. It
has been recently commissioned at University of Zaragoza as part of the R&D of
the NEXT $0
uetaeta$ experiment, although the experiment’s first stage is
currently being built based on a SiPM/PMT-readout concept relying on
electroluminescence. Around 2 million events were collected during the last
months, stemming from the low energy $gamma$-rays emitted by a $^{241}$Am
source when interacting with the Xenon gas ($epsilon$ = 26, 30, 59.5 keV). The
localized nature of such events above atmospheric pressure, the long drift
times, as well as the possibility to determine their production time from the
associated $alpha$ particle in coincidence, allow to extract primordial
properties of the TPC filling gas, namely the drift velocity, diffusion and
attachment coefficients. In this work we focus on the little explored
combination of Xe and trimethylamine (TMA) for which, in particular, such
properties are largely unknown. This gas mixture offers potential advantages
over pure Xenon when aimed at Rare Event Searches, mainly due to its Penning
characteristics, wave-length shifting properties and reduced diffusion, and it
is being actively investigated by our collaboration. The chamber is currently
operated at 2.7 bar, as an intermediate step towards the envisaged 10 bar.
Half-way to it, we take the opportunity to briefly summarize its main
performances as well as a first implementation of the calibration procedures
that have allowed to extend, and slightly improve, the previously reported
energy resolution to the whole readout plane (10.6%FWHM@30keV). | | Source: | arXiv, 1311.3535 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER