%0 Journal Article
%T Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment
%A NEXT Collaboration (Alvarez, V. et al
%A Carcel, S.
%A Cervera-Villanueva, A.
%A Diaz, J.
%A Ferrario, P.
%A Gil, A.
%A Gomez-Cadenas, J. J.
%A Laing, A.
%A Liubarsky, I.
%A Lorca, D.
%A Martin-Albo, J.
%A Martinez, A.
%A Monrabal, F.
%A Muñoz Vidal, J.
%A Nebot-Guinot, M.
%A Rodriguez, J.
%A Serra, L.
%A Simon, A.
%A Sorel, M.
%A Yahlali, N.
%J Journal of Instrumentation
%D 2013
%V 8
%I Iop Publishing Ltd
%@ 1748-0221
%G English
%F NEXTCollaborationAlvarez_etal2013
%O WOS:000317462400009
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1414), last updated on Mon, 15 Jun 2020 09:33:21 +0000
%X NEXT-DEMO is a large-scale prototype of the NEXT-100 detector, an electroluminescent time projection chamber that will search for the neutrinoless double beta decay of Xe-136 using 100-150 kg of enriched xenon gas. NEXT-DEMO was built to prove the expected performance of NEXT-100, namely, energy resolution better than 1% FWHM at 2.5MeV and event topological reconstruction. In this paper we describe the prototype and its initial results. A resolution of 1.75% FWHM at 511 keV (which extrapolates to 0.8% FWHM at 2.5 MeV) was obtained at 10 bar pressure using a gamma-ray calibration source. Also, a basic study of the event topology along the longitudinal coordinate is presented, proving that it is possible to identify the distinct dE/dx of electron tracks in high-pressure xenon using an electroluminescence TPC.
%K Double-beta decay detectors
%K Time projection chambers
%K Pattern recognition
%K cluster finding
%K calibration and fitting methods
%R 10.1088/1748-0221/8/04/P04002
%U http://arxiv.org/abs/1211.4838
%U https://doi.org/10.1088/1748-0221/8/04/P04002
%P P04002 - 25pp