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Accurate γ and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atm
- Source :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015, vol. 804, p. 8-24, Articles publicats (D-EMCI), DUGiDocs – Universitat de Girona
- Publication Year :
- 2020
- Publisher :
- Elsevier, 2020.
-
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' 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<br />The NEXT collaboration acknowledges funding support from the following agencies and institutions: European Research Council under Advanced Grant 339787-NEXT and Starting Grant 240054-TREX, Spanish Ministerio de Economia y Competitividad under grants Consolider-Ingenio 2010 CSD2008-0037 (CUP) and CSD2007-00042 (CPAN), contracts FPA2008-03456 and FPA2009-13697; Portuguese Fundacao para a Ciencia e a Tecnologia; European FEDER under grant PPTDC/FIS/103860/2008; US Department Of Energy under contract DE-AC02-05CH11231.
- Subjects :
- Nuclear and High Energy Physics
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
Time projection chambers
Analytical chemistry
Double-beta decay
Nuclear physics
chemistry.chemical_element
Electron
7. Clean energy
Penning-Fluorescent mixtures
Microbulk micromegas
TECNOLOGIA ELECTRONICA
Xenon
Double beta decay
Instrumentation
Physics
Time projection chamber
Resolution (electron density)
MicroMegas detector
Full width at half maximum
Gamma and electron detection
High pressure Xenon-Trimehylamine
Volume (thermodynamics)
chemistry
Física nuclear
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015, vol. 804, p. 8-24, Articles publicats (D-EMCI), DUGiDocs – Universitat de Girona
- Accession number :
- edsair.doi.dedup.....bf466d565529813a4478da648012ec08