Accurate gamma and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atm

González-Díaz, D. (Universidad de Zaragoza) ; Álvarez, V. ; Borges, F.I.G. ; Camargo, M. ; Cárcel, S. ; Cebrián, S. (Universidad de Zaragoza) ; Cervera, A. ; Conde, C.A.N. ; Dafni, T. (Universidad de Zaragoza) ; Díaz, J. ; Esteve, R. ; Fernandes, L.M.P. ; Ferrario, P. ; Ferreira, A.L. ; Freitas, E.D.C. ; Gehman, V.M. ; Goldschmidt, A. ; Gómez-Cadenas, J.J. ; Gutiérrez, R.M. ; Hauptman, J. ; Hernando Morata, J.A. ; Herrera, D.C. ; García-Irastorza, I. (Universidad de Zaragoza) ; Labarga, L. ; Laing, A. ; Liubarsky, I. ; Lopez-March, N. ; Lorca, D. ; Losada, M. ; Luzón, G. (Universidad de Zaragoza) ; Marí, A. ; Martín-Albo, J. ; Martínez-Lema, G. ; Martínez, A. ; Miller, T. ; Monrabal, F. ; Monserrate, M. ; Monteiro, C.M.B. ; Mora, F.J. ; Moutinho, L.M. ; Muñoz Vidal, J. ; Nebot-Guinot, M. ; Nygren, D. ; Oliveira, C.A.B. ; Pérez, J. ; Pérez Aparicio, J.L. ; Querol, M. ; Renner, J. ; Ripoll, L. ; Rodríguez, J. ; Santos, F.P. ; Dos Santos, J.M.F. ; Serra, L. ; Shuman, D. ; Simón, A. ; Sofka, C. ; Sorel, M. ; Toledo, J.F. ; Torrent, J. ; Tsamalaidze, Z. ; Veloso, J.F.C.A. ; Villar, J.A. (Universidad de Zaragoza) ; Webb, R. ; White, J.T. ; Yahlali, N. ; Azevedo, C. ; Aznar, F. ; Calvet, D. ; Castel, J. (Universidad de Zaragoza) ; Ferrer-Ribas, E. ; García, J.A. (Universidad de Zaragoza) ; Giomataris, I. ; Gómez, H. ; Iguaz, F.J. (Universidad de Zaragoza) ; Lagraba, A. (Universidad de Zaragoza) ; Le Coguie, A. ; Mols, J.P. ; Sahin, Ö. ; Rodríguez, A. ; Ruiz-Choliz, E. (Universidad de Zaragoza) ; Segui, L. ; Tomás, A. ; Veenhof, R.

Resumen: We report the performance of a 10 atm Xenon/trimethylamine time projection chamber (TPC) for the detection of X-rays (30 keV) and ¿-rays (0.511-1.275 MeV) in conjunction with the accurate tracking of the associated electrons. When operated at such a high pressure and in ~1%-admixtures, trimethylamine (TMA) endows Xenon with an extremely low electron diffusion (1.3±0.13mm-s (longitudinal), 0.95±0.20mm-s (transverse) along 1 m drift) besides forming a convenient ''Penning-Fluorescent'' mixture. The TPC, that houses 1.1 kg of gas in its fiducial volume, operated continuously for 100 live-days in charge amplification mode. The readout was performed through the recently introduced microbulk Micromegas technology and the AFTER chip, providing a 3D voxelization of 8mm×8mm×1.2mm for approximately 10 cm/MeV-long electron tracks. Resolution in energy (e) at full width half maximum (R) inside the fiducial volume ranged from R=14.6% (30 keV) to R=4.6%(1.275MeV). This work was developed as part of the R&D; program of the NEXT collaboration for future detector upgrades in the search of the neutrino-less double beta decay (ßß0¿) in 136Xe, specifically those based on novel gas mixtures. Therefore we ultimately focus on the calorimetric and topological properties of the reconstructed MeV-electron tracks. In particular, the obtained energy resolution has been decomposed in its various contributions and improvements towards achieving the R=1.4%v1MeV/e levels obtained in small sensors are discussed.

Idioma: Inglés

Año: 2015

Publicado en: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 804 (2015), 8-24
ISSN: 0168-9002

Factor impacto JCR: 1.2 (2015)

Categ. JCR: NUCLEAR SCIENCE & TECHNOLOGY rank: 9 / 32 = 0.281 (2015) - Q2 - T1
Categ. JCR: SPECTROSCOPY rank: 28 / 43 = 0.651 (2015) - Q3 - T2
Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 31 / 56 = 0.554 (2015) - Q3 - T2
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 24 / 28 = 0.857 (2015) - Q4 - T3

Factor impacto SCIMAGO: 0.965 - Instrumentation (Q1) - Nuclear and High Energy Physics (Q2)

Financiación: info:eu-repo/grantAgreement/EC/FP7/ 240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX
Financiación: info:eu-repo/grantAgreement/EC/FP7/339787/EU/Towards the NEXT generation of bb0nu experimets/NEXT
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

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Proy. investigación HCA (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)