双功能液态锂铅包层氚增殖性能分析  

Analyses on Tritium Breeding Performance of Dual Functional Lithium-Lead Blanket

作　　者：曾正魁 蒋洁琼 王海霞 陈思泽 王志刚 李斌 黄群英 ZENG Zhengkui;JIANG Jieqiong;WANG Haixia;CHEN Size;WANG Zhigang;Li Bin;HUANG Qunying(Key Laboratory of Neutronics And Radiation Safety,Institute of Nuclear Energy Safety Technology,Chinese Academy of Sciences,Hefei of Anhui Prov.230031,China;University of Science and Technology of China,Hefei of Anhui Prov.230026,China)

机构地区：[1]中科院核能安全技术研究所,中子输运理论与辐射安全重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026

出　　处：《核科学与工程》2020年第2期218-226,共9页Nuclear Science and Engineering

基　　金：国家磁约束核聚变能发展研究专项(2015GB108005);中国科学院信息化专项项目(XXH13506-104);国家科技部国家科技基础条件平台项目“国家基础科学数据共享服务平台”(DKA2017-12-02-17)。

摘　　要：双功能液态锂铅(DFLL)包层作为一种高性能的产氚包层,是中国聚变工程实验堆(CFETR)的候选包层之一。氚增殖比(TBR)是产氚包层核心设计参数之一,是评估聚变堆氚自持性能的重要指标,有必要对其进行详细分析。本文介绍了DFLL包层氚增殖性能数值分析与实验验证工作。其中数值分析采用中子输运设计与安全评价软件系统SuperMC建立了全堆三维中子学模型,计算分析了包层不同位置处的TBR值,并对影响包层氚增殖性能的相关因素,如第一壁材料、钨护甲、包层增殖区厚度、6 Li富集度等进行了敏感性分析及参数优化;实验验证工作利用强流聚变中子源HINEG,开展了DFLL中子学实验模块不同位置产氚率(TPR)测量。研究结果显示,经过优化的DFLL包层TBR设计参数可达到1.208,满足CFETR第一阶段的氚自持要求;实验结果与理论计算结果的最大偏差为8%以内符合,实验结果的测量不确定度在2σ内优于9.8%。The Dual Functional Lithium-Lead(DFLL)blanket,as a high performance tritium production blanket,is one of the candidates for Chinese Fusion Engineering Testing Reactor(CFETR).Tritium breeding ratio(TBR)is one of the key parameters for fusion reactor blanket design and needed to be analyzed in detail.This paper introduces the numerical analysis and experimental verification of tritium breeding performance of DFLL.The Super Multi-functional Calculation Program for Nuclear Design Safety Evaluation(i.e.SuperMC)was used for a three-dimensional neutronics modeling of CFETR and the TBR distribution calculations for different blanket scenarios.The factors related to the tritium breeding performance were numerically and quantitatively analyzed,such as the thicknesses of first wall and first wall armor,the thicknesses of different breeding blanket zones,the enrichment of 6 Li and other factors.The tritium production rate experiment was carried out on the High Intensity D-T Fusion Neutron Generator(HINEG)device with the DFLL experimental mock-up.The results showed that the optimized TBR value was 1.208 and met the requirement of CFETR tritium self-sufficiency.The deviation of theoretical/experimental ratio(C/E)was less than 8%and the experiment uncertainty is 9.8%(2σ).

关 键 词：双功能液态锂铅包层 氚增殖比 中子学分析 产氚率测量 

分 类 号：TL64[核科学技术—核技术及应用]