Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs
dc.contributor.author
dc.date.accessioned
2019-09-25T11:35:46Z
dc.date.available
2019-09-25T11:35:46Z
dc.date.issued
2018-10-11
dc.identifier.issn
0168-9002
dc.identifier.uri
dc.description.abstract
Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (EL TPC) by reducing the diffusion of the drifting electrons while keeping nearly intact the energy resolution of a pure xenon EL TPC. Based on state-of-the-art microscopic simulations, a substantial addition of helium, around 10 or 15 %, may reduce drastically the transverse diffusion down to 2.5 mm/m from the 10.5 mm/m of pure xenon. The longitudinal diffusion remains around 4 mm/m. Light production studies have been performed as well. They show that the relative variation in energy resolution introduced by such a change does not exceed a few percent, which leaves the energy resolution practically unchanged. The technical caveats of using photomultipliers close to an helium atmosphere are also discussed in detail
dc.description.sponsorship
The NEXT Collaboration acknowledges support from
the following agencies and institutions: the European
Research Council (ERC) under the Advanced Grant
339787-NEXT; the Ministerio de Economía y Competitividad
of Spain under grants FIS2014-53371-C04, the
Severo Ochoa Program SEV-2014-0398 and the María de
Maetzu Program MDM-2016-0692; the GVA of Spain
under grants PROMETEO/2016/120 and SEJI/2017/011;
the Portuguese FCT and FEDER through the program
COMPETE, projects PTDC/FIS-NUC/2525/2014 and
UID/FIS/04559/2013; the U.S. Department of Energy
under contracts number DE-AC02-07CH11359 (Fermi
National Accelerator Laboratory), DE-FG02-13ER42020
(Texas A&M) and de-sc0017721 (University of Texas at
Arlington); and the University of Texas at Arlington. We
acknowledge partial support from the European Union
Horizon 2020 research and innovation programme under
the Marie Sklodowska-Curie grant agreements No. 690575
and 674896
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation.isformatof
Versió preprint del document publicat a: https://doi.org/10.1016/j.nima.2018.07.013
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© Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018, vol. 905, p. 82-90
dc.relation.ispartofseries
Articles publicats (D-EMCI)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/submittedVersion
dc.identifier.doi
dc.identifier.idgrec
028907