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Nuclear data measurements at n_TOF for fusion and fission applications

用于聚变和裂变应用的 n_TOF 核数据测量

基本信息

批准号：
2904692
负责人：
金额：
--
依托单位：
University of Manchester
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2904692
关键词：
Nuclear data measurements n_TOF fusion

项目摘要

New nuclear technologies require improved nuclear data and this project aims to measure these data sets through neutron induced reactions on key materials of importance to both fission and fusion systems.The focus of this project is to conduct measurements at the neutron time-of-flight facility n_TOF, CERN where high-energy (20 GeV/c) protons from the CERN accelerator complex impinge on a lead spallation target which leads to an intense neutron source. The time it takes a neutron to travel through an evacuated flight path is used to calculate the neutron energy and the measurement of neutron induced reactions and related quantities such as the reaction cross section can be measured. The facility allows unique measurements thanks to its wide neutron-energy range and high neutron flux. Nuclear data measurements that can be done at n_TOF are neutron-induced fission, capture, and ones emitting charged particles. The student will initially be developing a new experimental technique to measure inelastic scattering cross section measurements before moving onto performing neutron induced charged particle reaction measurements of importance to nuclear fusion technologies. An initial test to measure neutron inelastic scattering on Fe-56 will be performed at n_TOF using LaBr3 detectors, the results of which will help shape and guide a future experimental programme on these type of experiment at n_TOF.Secondly, the student will contribute to the development of an experimental setup for detecting neutron induced charged particle reactions using an annular silicon detector. An experiment at n_TOF will be designed and performed to measure a material of interest to fusion technologies such as tungsten.Furthermore, the project will support and bolster the UK's involvement and contribution to the n_TOF facility, where many measurements of importance to nuclear technologies are performed each year.

新的核技术需要改进的核数据，本项目旨在通过中子诱导反应对裂变和聚变系统都很重要的关键材料测量这些数据集。该项目的重点是在CERN中子飞行时间设施n_TOF进行测量，CERN加速器综合体的高能（20 GeV/c）质子撞击铅散裂靶，从而产生强烈的中子源。中子通过真空飞行路径所需的时间用于计算中子能量和测量中子诱导反应以及测量反应截面等相关量。该设施允许独特的测量得益于其宽的中子能量范围和高中子通量。可以在n_TOF完成的核数据测量是中子诱导的裂变、捕获和发射带电粒子的。该学生将首先开发一种新的实验技术来测量非弹性散射截面测量，然后再进行中子诱导带电粒子反应测量，这对核聚变技术很重要。将在n_TOF使用LaBr3探测器进行测量Fe-56上中子非弹性散射的初步测试，其结果将有助于形成和指导未来在n_TOF进行此类实验的实验计划。其次，学生将参与开发一套实验装置，利用环形硅探测器探测中子诱导的带电粒子反应。将在n_TOF设计并进行一个实验，以测量钨等聚变技术感兴趣的材料。此外，该项目将支持和加强英国对n_TOF设施的参与和贡献，该设施每年进行许多对核技术重要的测量。