@Article{NEXTCollaborationCebrian_etal2015,
author="NEXT Collaboration (Cebrian, S. et al
and Alvarez, V.
and Carcel, S.
and Cervera-Villanueva, A.
and Diaz, J.
and Ferrario, P.
and Gomez-Cadenas, J. J.
and Laing, A.
and Liubarsky, I.
and Lopez-March, N.
and Lorca, D.
and Martin-Albo, J.
and Martinez, A.
and Monrabal, F.
and Monserrate, M.
and Mu{\~{n}}oz Vidal, J.
and Nebot-Guinot, M.
and Rodriguez, J.
and Serra, L.
and Simon, A.
and Sorel, M.
and Yahlali, N.",
title="Accurate gamma and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atm",
journal="Nuclear Instruments {\&} Methods in Physics Research A",
year="2015",
publisher="Elsevier Science Bv",
volume="804",
pages="8--24",
optkeywords="Double-beta decay; Gamma and electron detection; Microbulk micromegas; Time projection chamber; High pressure Xenon-Trimehylamine; Penning-Fluorescent mixtures",
abstract="We report the performance of a 10 atm Xenon/trimethylamine time projection chamber (TPC) for the detection of X-rays (30 keV) and gamma-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 similar to 1{\%}-admixtures, trimethylamine (TMA) endows Xenon with an extremely low electron diffusion (1.3 +/- 0.13 mm-sigma (longitudinal), 0.95 +/- 0.20 mm-sigma (transverse) along 1 m drift) besides forming a convenient Penning-Fluorescent{\textquoteright} 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 8 mm x 8 mm x 1.2 mm for approximately 10 cm/MeV-long electron tracks. Resolution in energy (epsilon) at full width half maximum (R) inside the fiducial volume ranged from R = 14.6{\%} (30 keV) to R = 4.6{\%} (1.275 MeV). 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 (beta beta 0 nu) in Xe-136, 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{\%}root MeV/epsilon levels obtained in small sensors are discussed.",
optnote="WOS:000364133700002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2442), last updated on Mon, 15 Jun 2020 09:34:25 +0000",
issn="0168-9002",
doi="10.1016/j.nima.2015.08.033",
opturl="http://arxiv.org/abs/1504.03678",
opturl="https://doi.org/10.1016/j.nima.2015.08.033",
archivePrefix="arXiv",
eprint="1504.03678",
language="English"
}