Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC

6533b83afe1ef96bd12a6fc2

RESEARCH PRODUCT

Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC

Vicente ÁLvarez Puerta Anselmo Cervera Villanueva F. I.g. Borges Sara Cárcel García J. Castel S. Cebrián Anselmo Cervera Villanueva C.a.n. Condel T. Dafni T.h.v.t. Dias José Díaz Medina M. Egorov R. Esteve P. Evtoukhovitch L.m. P. Fernandes Paola Ferrario A.l. Ferreira E.d.c. Freitas V.m. Gehman A. Gil A. Goldschmidt H. Gómez Juan José Gómez Cadenas D. González-díaz R.m. Gutiérrez J. Hauptman J.a. Hernando Morata D.c. Herrera F.j. Iguaz I.g. Irastorza M.a. Jinete L. Labarga Igor Liubarsky J.a.m. Lopes David Lorca Galindo M. Losada G. Luzón A. Marí Justo Martín-albo Simón Alberto Martínez Pérez T. Miller A. Moiseenko Francesc Monrabal Capilla C.m.b. Monteiro F.j. Mora L.m. Moutinho J. Muñoz Vidal H. Natal Da Luz G. Navarro Miquel Nebot Guinot D. Nygren C.a.b. Oliveira R. Palma J. Pérez J.l. Pérez Aparicio J. Renner Lluís Ripoll Masferrer A. Rodríguez Javier Rodríguez Samaniego F. P. Santos J. M.f. Dos Santos L. Segui Luis Serra Díaz-cano D. Shuman Ander Simón Estévez C. Sofka Michel Sorel J.f. Toledo A. Tomás J. Torrent Z. Tsamalaidze D. Vázquez J.f.c.a. Veloso J.a. Villar R.c. Webb J.t. White Nadia Yahlali Haddou

subject

Electroluminiscència Nuclear and High Energy Physics Xenon High-pressure Dark matter chemistry.chemical_element Nuclear physics TECNOLOGIA ELECTRONICA Xenon Double beta decay Energy resolution Neutrinoless double beta decay Instrumentation Physics Time projection chamber Detector Resolution (electron density)Gamma ray Física Nuclear energy Full width at half maximum chemistry Electroluminescence Energia nuclear TPC

description

We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 Xe-136 neutrino-less double beta decay (0 nu beta beta) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of similar to 1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and similar to 5% FWHM for 30 keV fluorescence xenon X-rays. These results demonstrate that 0.5% FWHM resolutions for the 2459 keV hypothetical neutrino-less double beta decay peak are realizable. This energy resolution is a factor 7-20 better than that of the current leading 0 nu beta beta experiments using liquid xenon and thus represents a significant advancement. We present also first results from a track imaging system consisting of 64 silicon photo-multipliers recently installed in NEXT-DBDM that, along with the excellent energy resolution, demonstrates the key functionalities required for the NEXT-100 0 nu beta beta search. (c) 2013 Elsevier B.V. All rights reserved.

year	journal	country	edition	language
2013-01-01

http://hdl.handle.net/10256/14135