SANDD: A directional antineutrino detector with segmented <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e787" altimg="si39.svg"><mml:msup><mml:mrow /><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msup></mml:math>Li-doped pulse-shape-sensitive plastic scintillator

We present a characterization of small (9-liter) and mobile 0.1% 6Li-doped pulse-shape-sensitive plastic scintillator antineutrino detector called SANDD (Segmented AntiNeutrino Directional Detector), constructed for the purpose near-field reactor monitoring with sensitivity to direction. comprises three different types module. A detailed Monte Carlo simulation code was developed match validate performance each modules. The combined model then used produce prediction entire detector. Analysis cuts were established isolate inverse beta decay events while rejecting large fraction backgrounds. neutron positron detection efficiencies are estimated be 34.8% 80.2%, respectively, coincidence efficiency is 71.7%, resulting in 20.0% ± 0.2%(stat.) 2.1%(syst.). predicted directional produces an uncertainty 20∘ azimuthal direction per 100 detected events.