skip to main content

SciTech ConnectSciTech Connect

Title: Radon and material radiopurity assessment for the NEXT double beta decay experiment

The ”Neutrino Experiment with a Xenon TPC” (NEXT), intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in {sup 136}Xe at the Canfranc Underground Laboratory in Spain, requires ultra-low background conditions demanding an exhaustive control of material radiopurity and environmental radon levels. An extensive material screening process is underway for several years based mainly on gamma-ray spectroscopy using ultra-low background germanium detectors in Canfranc but also on mass spectrometry techniques like GDMS and ICPMS. Components from shielding, pressure vessel, electroluminescence and high voltage elements and energy and tracking readout planes have been analyzed, helping in the final design of the experiment and in the construction of the background model. The latest measurements carried out will be presented and the implication on NEXT of their results will be discussed. The commissioning of the NEW detector, as a first step towards NEXT, has started in Canfranc; in-situ measurements of airborne radon levels were taken there to optimize the system for radon mitigation and will be shown too.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ; ; ; ; ; ; ; more »;  [6] ; « less
  1. Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza (Spain)
  2. (Spain)
  3. Instituto de Física Teórica, UAM/CSIC, Campus de Cantoblanco, 28049 Madrid (Spain)
  4. Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s/n, 22880 Canfranc Estación, Huesca (Spain)
  5. Dpto. de Física Teórica, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid (Spain)
  6. Instituto de Física Corpuscular, CSIC & Universitat de València, C/ Catedrático José Beltrán, 2, 46980 Paterna, Valencia (Spain)
Publication Date:
OSTI Identifier:
22488707
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1672; Journal Issue: 1; Conference: LRT 2015: 5. international workshop in low radioactivity techniques, Seattle, WA (United States), 18-20 Mar 2015; Other Information: (c) 2015 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; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COMMISSIONING; DOUBLE BETA DECAY; ELECTROLUMINESCENCE; GAMMA SPECTROSCOPY; GE SEMICONDUCTOR DETECTORS; ICP MASS SPECTROSCOPY; NEUTRINOS; PRESSURE VESSELS; RADON; READOUT SYSTEMS; SHIELDING; TIME PROJECTION CHAMBERS; UNDERGROUND; XENON; XENON 136