VIDARR: monitoring reactor anti-neutrinos using a plastic scintillator detector in a mobile laboratory

Technology developed for the T2K electromagnetic calorimeter has been adapted to make a small footprint, reliable, segmented detector to characterise anti-neutrinos emitted by nuclear reactors. The device has been developed and demonstrated by the University of Liverpool and underwent field tests at the Wylfa Magnox Reactor on Anglesey, UK. It was situated in a 20\,ft ISO shipping container, above ground, roughly 60\,m from the 1.5\,\GWt\ reactor core. Based on the design of the T2K Near Detector ECal, the device detects anti-neutrinos through the distinctive delayed coincidence signal of inverse $\beta$-decay interactions using extruded plastic scintillator and Hamamatsu Multi-Pixel Photon Counters.

[1]  M. Gautier,et al.  Online Monitoring of the Osiris Reactor with the Nucifer Neutrino Detector , 2015, 1509.05610.

[2]  Daresbury,et al.  The electromagnetic calorimeter for the T2K near detector ND280 , 2013, 1308.3445.

[3]  K M Heeger,et al.  First Search for Short-Baseline Neutrino Oscillations at HFIR with PROSPECT. , 2018, Physical review letters.

[4]  S. Cormon,et al.  Improved Predictions of Reactor Antineutrino Spectra , 2011, 1101.2663.

[5]  S Hatakeyama,et al.  First results from KamLAND: evidence for reactor antineutrino disappearance. , 2003, Physical review letters.

[6]  V. Belov,et al.  Searches for sterile neutrinos at the DANSS experiment , 2018, Proceedings of Neutrino Oscillation Workshop — PoS(NOW2018).

[7]  J. Hanson,et al.  The Palo Verde reactor neutrino oscillation experiment , 1999 .

[8]  J. H. Kim,et al.  Fuel-Composition Dependent Reactor Antineutrino Yield at RENO. , 2019, Physical Review Letters.

[9]  N. Bowden,et al.  Observation of the isotopic evolution of pressurized water reactor fuel using an antineutrino detector , 2008, 0808.0698.

[10]  The RENO Collaboration,et al.  Fuel-Composition Dependent Reactor Antineutrino Yield at RENO. , 2018, Physical review letters.

[11]  N. Bowden.  Reactor monitoring and safeguards using antineutrino detectors , 2008, 0809.2128.

[12]  B. Han,et al.  Sterile Neutrino Search at the NEOS Experiment. , 2016, Physical review letters.

[13]  F. B. Harrison,et al.  Detection of the Free Neutrino: a Confirmation. , 1956, Science.

[14]  P. Kandlakunta,et al.  Gamma-ray rejection, or detection, with gadolinium as a converter. , 2012, Radiation protection dosimetry.

[15]  Irvine,et al.  The T2K Experiment , 2009, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

[16]  F. Rademakers,et al.  ROOT — An object oriented data analysis framework , 1997 .

[17]  G F Cao,et al.  Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay. , 2017, Physical review letters.