MEGAPIE靶的中子学性能
Neutronic performances of the MEGAPIE target
摘要：
MEGAPIE项目是加速器驱动系统道路上的一个关键实验，它为科学界提供了关于液体铅铋溅射靶在现实和长期辐照条件下行为的独特数据。当考虑到这种靶的最终目的地是强中子源时，其中子当然是最重要的。这是表征运行中靶内部中子通量的动机。一个由8个微裂变室组成的复杂探测器已经建成并安装在靶芯，距离质子/Pb-Bi相互作用区几十厘米。该探测器被设计用于测量靶内的绝对中子通量，给出其空间分布，并将其时间变化与束流强度相关联。此外，可以提取作为沿束轴位置的函数的中子能量分布的积分信息，从而对MCNPX等运输代码中实施的中子产生模型给出积分约束。
英文摘要：
The MEGAPIE project is a key experiment on the road to Accelerator Driven Systems and it provides the scientific community with unique data on the behavior of a liquid lead-bismuth spallation target under realistic and long term irradiation conditions. The neutronic of such target is of course of prime importance when considering its final destination as an intense neutron source. This is the motivation to characterize the inside neutron flux of the target in operation. A complex detector, made of 8 micro fission-chambers, has been built and installed in the core of the target, few tens of centimeters from the proton/Pb-Bi interaction zone. This detector is designed to measure the absolute neutron flux inside the target, to give its spatial distribution and to correlate its temporal variations with the beam intensity. Moreover, integral information on the neutron energy distribution as a function of the position along the beam axis could be extracted, giving integral constraints on the neutron production models implemented in transport codes such as MCNPX.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
