HT-7超导托卡马克上时间分辨中子注量率测量  

Time-resolved Neutron Flux Density Measurement on HT-7 Superconducting Tokamak

作　　者：陈珏铨[1] 朱玉宝[1] 万宝年[1] 李建刚[1] 

机构地区：[1]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《原子能科学技术》2005年第1期33-37,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10305013);中国科学院合肥物质科学研究院院长基金资助项目(20020601)

摘　　要：本文介绍了HT 7超导托卡马克上的时间分辨中子注量率测量系统。在高参数放电状态下,计算得到中子产额在108 s-1量级,在靠近装置边上的中子注量率处于 102 cm-2 ·s-1 量级,因此,选择 BF3正比计数管作为探测器。经过多次实验,测量系统运行稳定可靠,测量得到的中子注量率和估算得到的中子注量率在误差范围内一致。The time-resolved neutron flux density measurement system on HT-7 Tokamak is presented in the paper. When the machine is operated in high performance mode, the total neutron yield is estimated to be about 108 s-1, and the neutron flux density near the vacuum vessel is about 102 cm-2&middots-1. Therefore, BF3 proportional counter based system was constructed and successfully implemented on HT-7. The measurement system works stably during a series of experiments. The measured neutron flux density is in agreements with that from the numerical estimation.

关 键 词：托卡马克 中子产额 时间分辨 中子注量率 磁约束 等离子体聚变 

分 类 号：TL631[核科学技术—核技术及应用]