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Title: Present status of sensitive detector of reactor’s antineutrinos using scintillating detectors

In 2011, the reanalysis of the reactor antineutrinos spectra led to the formulation of the Reactor Antineutrino Anomaly (RAA) [1], which indicates the discrepancy between measured and expected antineutrino fluxes on short baselines. This discrepancy appears to favor the existence of the fourth “sterile” neutrino with |Δm{sup 2}|>1 eV{sup 2}. To confirm or reject this hypothesis a high sensitive antineutrino detector located close to the reactor is required. In addition to that such a detector could be used to online monitor the isotopic composition of the reactor core and to prevent illegal production and removal of{sup 239}Pu, which is the essential part of nuclear weapons. Detector DANSSino [2] already proved that even a compact antineutrino detector (∼ 1 m{sup 3}) based on polystyrene is capable of antineutrino detection in the close vicinity of a reactor core (∼ 10 m) with signal to background ratio about one. As a common activity between JINR Dubna and IEAP CTU a new prototype of detector (called S{sup 3}) has been proposed and is under construction. The construction design, selected results of Monte Carlo simulations and results of benchmark tests are presented.
Authors:
; ; ; ;  [1] ; ; ; ; ; ; ;  [2] ;  [3]
  1. Institute of Experimental and Applied Physics, CTU in Prague (Czech Republic)
  2. Joint Institute for Nuclear Research, Dubna (Russian Federation)
  3. ENVINET a.s., Nuvia Group, Tǐebíč (Czech Republic)
Publication Date:
OSTI Identifier:
22488730
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; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BENCHMARKS; COMPUTERIZED SIMULATION; DESIGN; ELECTRON ANTINEUTRINOS; EV RANGE; HYPOTHESIS; ISOTOPE RATIO; JINR; MONTE CARLO METHOD; NEUTRINO DETECTION; POLYSTYRENE; REACTOR CORES; SCINTILLATION COUNTERS