【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。更多还原

【Abstract】 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·s^-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.更多还原