2011年11月,中子散射实验室基于CARR冷源和孔道参数及各中子谱仪终端的要求,应用蒙特卡罗拟合软件VITESS,计算比较了不同冷中子散射谱仪位置处,导管系统的传输效率、信噪比、水平分布和水平发散角分布等束流品质参数,完成了CARR冷中子束流传输系统初步的规划设计。设计中的CARR冷中子束流传输系统共分为CNGA、CNGB-N、CNGB-S、CNGC-N、CNGC-S和 In November 2011, based on the CARR cold source and pore parameters and the requirements of each neutron spectrometer terminal, the neutron scattering laboratory used Monte Carlo fitting software VITESS to calculate and compare the positions of different cold neutron scattering spectrometers, System transmission efficiency, signal to noise ratio, horizontal distribution and horizontal divergence angle distribution of beam quality parameters, completed the CARR cold neutron beam transmission system preliminary planning and design. The design of the CARR cold neutron beam transmission system is divided into CNGA, CNGB-N, CNGB-S, CNGC-N, CNGC-S and