Benchmarking fast-neutron response of 7Li-enriched C <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si20.svg" display="inline" id="d1e368"> <mml:msup> <mml:mrow/> <mml:mrow> <mml:mn>7</mml:mn> </mml:mrow> </mml:msup> </mml:math> LYC scintillators: Simulations and experiment