Coherent neutrino-nucleus scattering detection with a CsI[Na] scintillator at the SNS spallation source

Jul 28, 2014
10 pages
Published in:
  • Nucl.Instrum.Meth.A 773 (2015) 56-65
  • Published: Feb 11, 2015
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Abstract: (Elsevier)
We study the possibility of using CsI[Na] scintillators as an advantageous target for the detection of coherent elastic neutrino-nucleus scattering (CENNS), using the neutrino emissions from the SNS spallation source at Oak Ridge National Laboratory. The response of this material to low-energy nuclear recoils like those expected from this process is characterized. Backgrounds are studied using a 2 kg low-background prototype crystal in a dedicated radiation shield. The conclusion is that a planned 14 kg detector should measure approximately 550 CENNS events per year above a demonstrated ~7keVnr low-energy threshold, with a signal-to-background ratio sufficient for a first measurement of the CENNS cross-section. The cross-section for the Pb208(νe,e−)Bi208 reaction, of interest for future supernova neutrino detection, can be simultaneously obtained.
Note:
  • v2: minor corrections
  • Neutrino interactions
  • Spallation sources
  • Cesium iodide
  • Coherent neutrino scattering
  • CENNS
  • neutrino nucleus: elastic scattering
  • cesium: iodine
  • nucleus: recoil
  • scintillation counter: crystal
  • Oak Ridge SNS PS