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介绍了基于我国大科学实验装置兰州重离子加速器冷却储存环(HIRFL-CSR)的加速器驱动的次临界系统(ADS)相关核数据实验测量装置建设及首次测试实验。该实验装置探测系统主要包括束流拾取探测器、轻带电粒子谱仪、γ探测器阵列及中子飞行时间谱仪。为了对该实验装置各探测器及相配套的电子学与数据获取系统进行整体性能测试,利用400MeV/u 16 O轰击Pb靶,对出射的中子、γ射线及轻带电粒子等产物的能谱、产额及角分布等物理量进行测量,在国内首次实现了加速器驱动的几MeV至几百MeV宽能量范围的白光中子能谱测量。实验结果表明,该实验装置运行正常,实验方案可靠、正确。
This paper introduces the construction and first test experiment of accelerator-driven subcritical system (ADS) related nuclear data measuring device based on Lanzhou Heavy Ion Accelerator Cooling Storage Ring (HIRFL-CSR). The experimental device detection system includes beam pick-up detector, light charged particle spectrometer, γ detector array and neutron time-of-flight spectrometer. In order to test the overall performance of each detector in the experimental apparatus and the matching electronics and data acquisition system, the energy spectra of products such as exiting neutrons, γ-rays and light charged particles were bombarded with Pb targets by 400MeV / u 16 O , Output and angular distribution of the physical measurements, the first time in the country to achieve accelerator-driven white MeV to hundreds of MeV wide range of white-light neutron energy spectrum measurements. The experimental results show that the experimental device is operating normally and the experimental scheme is reliable and correct.