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Title: Radiopurity control in the NEXT-100 double beta decay experiment

An extensive material screening and selection process is underway in the construction of the 'Neutrino Experiment with a Xenon TPC' (NEXT), intended to investigate neutrinoless double beta decay using a high-pressure xenon gas TPC filled with 100 kg of Xe enriched in {sup 136}Xe. Determination of the radiopurity levels of the materials is based on gamma-ray spectroscopy using ultra-low background germanium detectors at the Laboratorio Subterráneo de Canfranc (Spain) and also on Glow Discharge Mass Spectrometry. Materials to be used in the shielding, pressure vessel, electroluminescence and high voltage components and energy and tracking readout planes have been already taken into consideration. The measurements carried out are presented, describing the techniques and equipment used, and the results obtained are shown, discussing their implications for the NEXT experiment.
Authors:
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  1. Instituto de Física Corpuscular (IFIC), CSIC and Universitat de València, 46980 Paterna, Valencia (Spain)
Publication Date:
OSTI Identifier:
22218196
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1549; Journal Issue: 1; Conference: LRT 2013: 4. international workshop on low radioactivity techniques, Assergi (Italy), 10-12 Apr 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DOUBLE BETA DECAY; ELECTRIC POTENTIAL; ELECTROLUMINESCENCE; GAMMA SPECTROSCOPY; GE SEMICONDUCTOR DETECTORS; GLOW DISCHARGES; MASS SPECTROSCOPY; NEUTRINOS; POSITION SENSITIVE DETECTORS; PRESSURE VESSELS; READOUT SYSTEMS; SHIELDING; TIME PROJECTION CHAMBERS; XENON; XENON 136