- Main
A backing detector for order-keV neutrons
- Biekert, A;
- Chaplinsky, L;
- Fink, CW;
- Garcia-Sciveres, M;
- Gillis, WC;
- Guo, W;
- Hertel, SA;
- Heuermann, G;
- Li, X;
- Lin, J;
- Mahapatra, R;
- McKinsey, DN;
- Patel, PK;
- Penning, B;
- Pinckney, HD;
- Platt, M;
- Pyle, M;
- Romani, RK;
- Serafin, A;
- Smith, RJ;
- Suerfu, B;
- Velan, V;
- Wang, G;
- Wang, Y;
- Watkins, SL;
- Williams, MR
- et al.
Published Web Location
https://doi.org/10.1016/j.nima.2022.166981Abstract
We have designed and tested a large-area (0.15 m2) neutron detector based on neutron capture on 6Li. The neutron detector design has been optimized for the purpose of tagging the scattering angle of keV-scale neutrons. These neutron detectors would be employed to calibrate the low-energy (<100 eV) nuclear recoil in detectors for dark matter and coherent elastic neutrino nucleus scattering (CEνNS). We describe the design, construction, and characterization of a prototype. The prototype is designed to have a tagging efficiency of ∼25% at the relevant O(keV) neutron energies, and with a mean capture time of ∼17μs. The prototype was characterized using a 252Cf neutron source and agreement with the simulation was observed within a few percent level.
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