CAI Xinggang1, 2 NIE Yangbo2 BAO Jie2 LU Yanxia1 LIU Jiantao1, 2 RUAN Xichao2 1. Design of a pre-collimator system for neutronics benchmark experiment[J]. Nuclear techniques, 2013, 36(1): 010201
CAI Xinggang1, 2 NIE Yangbo2 BAO Jie2 LU Yanxia1 LIU Jiantao1, 2 RUAN Xichao2 1. Design of a pre-collimator system for neutronics benchmark experiment[J]. Nuclear techniques, 2013, 36(1): 010201 DOI: 10.11889/j.0253-3219.2013.hjs.36.010201.
Benchmark experiment is an important means to inspect the reliability and accuracy of the evaluated nuclear data
the effect/background ratios are the important parameters to weight the quality of experimental data.In order to obtain higher effect/background ratios
a pre-collimator system was designed for benchmark experiment.This system mainly consists of a pre-collimator and a shadow cone.The MCNP-4C code was used to simulate the background spectra under various conditions
from the results we found that with the pre-collimator system have a very marked improvement in the effect / background ratios.