NEA加速器驱动系统(ADS)基准体系散裂中子相对裂变中子重要性的研究

摘要

加速器驱动次临界系统(ADS)在生产能量、增殖核燃料和嬗变高放废物等方面具有良好的应用前景,在国际上受到广泛的重视.在 ADS 系统的设计中,外源中子相对裂变中子的重要性是影响外源中子利用价值的重要因素.本文通过对 NEA 加速器驱动系统(ADS)基准体系的 MCNP5 模拟计算,给出了体系的散裂中子相对于裂变中子重要性的具体计算方法和结果,为 ADS 系统的研究提供了参考.%Accelerator driven sub-critical system (ADS), which has good application prospects in production of energy, proliferation of nuclear fuel and transmutation of high-level radioactive waste, has been widely appreciated in the international community. In ADS system design, the importance of external source neutrons relative to fission neutrons is an important factor for improving the utility value of external source neutrons. Through MCNP5 simulation of NEA ADS benchmark, the specific calculation meth od and result of the importance of spallation neutrons relative to fission neutrons for the system was given in this paper. It provides reference for ADS research.