中文摘要：

核反应堆的安全运行、新一代反应堆设计以及核废料处理等需要精确的中子核数据。光中子源联用飞行时间谱（Time of Flight,TOF）测量是最精确的中子能量测量技术,在热中子和共振中子能区的截面测量中发挥了非常重要的作用。钍基熔盐堆（Thorium Molten Salt Reactor,TMSR）项目中15 MeV电子加速器驱动的光中子源装置（TMSR Photo-Neutron Source Phase 1,TPNS1）是专为钍-铀循环核数据测量设计和建造的,它位于中国科学院上海应用物理研究所嘉定园区内。第一阶段采用15 MeV电子直线加速器（LINAC）驱动,第二阶段拟建造电子能量约100 MeV（TPNS2）驱动的光中子源。前者建成后可提供飞行路径5 m、通量约104 n·s^-1·cm^-2的连续能量中子束（白光中子）及约1 MeV低能伽马射线,它们分别用于测量中子反应截面和伽马辐照研究,这是国内首台用于核数据测量的白光中子源。

英文摘要：

Background： Neutron evaluated data were needed by many researches, e.g., the safety traffic of nuclear reactor, design of new generated reactor and treatment of nuclear waste. Purpose： The photo-neutron source driven by 15-MeV electrons L1NAC in Thorium molten salt reactor （TMSR） program was designed for Th-U cycle nuclear data measurement. Methods： The photo-neutron source combined with time of flight （TOF） spectra is the most accurate method in neutron energy measurement, which plays a very important role in thermal and resonance neutron cross section measurement. Results： It locats in Jiading campus of Shanghai Institute of Applied Physics （SINAP）. In the first phase, a 15-MeV electron LINAC will be manufactured, and then a more high energy about 100-MeV LINAC will be used for the photo-neutron source. Conclusion： The facility （phase 1） will supply the 5-m TOF path and white spectrum neutron with flux -10^4 n·s^-1·cm^- 2 and low energy gamma ray -1 MeV, and it will be used in neutron cross section measurement and gamma irradiation study. This is the first white neutron source facility designed for TMSR nuclear data measurement.