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Title: Pixel detectors in double beta decay experiments, a new approach for background reduction

Double beta decay (ββ) experiments are challenging frontiers in contemporary physics. These experiments have the potential to investigate more about neutrinos (eg. nature and mass). The main challenge for these experiments is the reduction of background. The group at IEAP, CTU in Prague is investigating a new approach using pixel detectors Timepix. Pixel detector offer background reduction capabilities with its ability to identify the particle interaction (from the 2D signature it generates). However, use of pixel detectors has some challenges such as the presence of readout electronics near the sensing medium and heat dissipation. Different aspects of pixel setup (identification of radio-impurities, selection of radio-pure materials) and proposed experimental setup are presented. Also, results of preliminary background measurements (performed on the surface and in the underground laboratories) using the prototype setups are presented.
Authors:
; ; ;  [1] ;  [2] ; ;  [3] ; ;  [4] ;  [5]
  1. Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horska 3a/22, 12800 Prague 2 (Czech Republic)
  2. Imperial College London, Prince Consort Road, London SW7 2AZ, UK and Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow region (Russian Federation)
  3. Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow region (Russian Federation)
  4. Freiburger Materialforschungszentrum, Albert-Ludwigs-Universität, Freiburg, D-79104 Freiburg (Germany)
  5. Laboratoire Souterrain de Modane, 73500 Modane (France)
Publication Date:
OSTI Identifier:
22218202
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; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DOUBLE BETA DECAY; ENERGY LOSSES; HEAT TRANSFER; NEUTRINOS; PARTICLE INTERACTIONS; POSITION SENSITIVE DETECTORS; READOUT SYSTEMS; SI SEMICONDUCTOR DETECTORS; THERMAL DIFFUSIVITY; THERMAL EFFLUENTS; UNDERGROUND