Author/Authors :
Wang، نويسنده , , A. Galonsky، نويسنده , , A and Kruse، نويسنده , , J.J and Zecher، نويسنده , , P.D and Deلk، نويسنده , , F and Horvلth، نويسنده , , ء and Kiss، نويسنده , , ء and Seres، نويسنده , , Z and Ieki، نويسنده , , K and Iwata، نويسنده , , Y، نويسنده ,
Abstract :
Two 2 m × 2 m “walls” were built for experiments with two neutrons in the final state. Each wall consists of 25 rectangular cells filled with NE-213 liquid scintillator. The close-packed design of the array makes cross-talk an inevitable contributor to distortion of measurements with this system. For En ≤ 25 MeV almost all the detection efficiency comes from n-p scattering, and the simple two-body kinematics can be used as the basis for identifying cross-talk events. A Monte-Carlo code was developed to simulate the detection process. We found that most cross-talk events could be distinguished from real two-neutron events. A test experiment for comparison with the code was performed with neutrons from the 7Li(p, n)7Be reaction at Ep = 30 MeV. With this reaction all two-detector coincidences are cross-talk events. Consistency between the experimental data and the simulation results was obtained.
