LANSCE加速器装置作为1- MW聚变原型中子源的进展
Advancement of LANSCE Accelerator Facility as a 1-MW Fusion Prototypic Neutron Source
摘要：
聚变原型中子源（FPNS）被认为是科学理解未来核聚变反应堆中材料降解的试验平台[1-3]。FPNS的主要任务是提供8-11 dpa/日历年的铁样品中的损伤率，其中He/dpa比为~10 appm，辐照体积为50 cm 3或更大，辐照温度为300 - 1000 ° C，样品平面内的通量梯度小于20%/cm。洛斯阿拉莫斯中子科学中心（LANSCE）是FPNS项目的一个有吸引力的候选者。加速器设施被设计为0.8兆瓦的介子工厂，并在很长一段时间内运行。LANSCE加速器综合体的现有结构基本上可以满足聚变中子源站的要求。升级后的加速器系统的主要功能是安全可靠地将1.25 mA连续质子束流以800 MeV的束能量从开关站输送到靶组件，以产生1 MW的质子束与固体钨靶相互作用。本研究描述了现有的加速器设置和进一步的发展，以满足FPNS项目的需求。
英文摘要：
The Fusion Prototypic Neutron Source (FPNS) is considered to be a testbed for scientific understanding of material degradation in future nuclear fusion reactors [1-3]. The primary mission of FPNS is to provide a damage rate in iron samples of 8-11 dpa/calendar year with He/dpa ratio of ~10 appm in irradiation volume of 50 cm3 or larger with irradiation temperature 300 - 1000o C and flux gradient less than 20%/cm in the plane of the sample. The Los Alamos Neutron Science Center (LANSCE) is an attractive candidate for the FPNS project. The Accelerator Facility was designed and operated for an extended period as a 0.8-MW Meson Factory. The existing setup of the LANSCE accelerator complex can nearly fulfill requirements of the fusion neutron source station. The primary function of the upgraded accelerator systems is the safe and reliable delivery of a 1.25-mA continuous proton beam current at 800-MeV beam energy from the switchyard to the target assembly to create 1 MW power of proton beam interacting with a solid tungsten target. The present study describes existing accelerator setup and further development required to meet the needs of FPNS project.
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