中国散裂中子源剂量监测器系统

In order to monitor the neutron and gamma radiation dose in the workplace and surrounding environment of China spallation neutron source, various types of dose-monitors have been developed and applied. According to the type of rays, and ray energy, will place neutron dose monitor and gamma dose monitor of workplace monitoring for staff to provide reliable data and super threshold dose monitoring alarm function. The environment neutron dose monitor and environment gamma dose monitor of environmental monitoring stations, provides an accurate dose levels surrounding environment, ensure the safety of the public, surrounding by the relevant national regulatory authorities provide strong regulatory basis. In China spallation neutron source commissioning phase, from four key 1~4 months monitoring data can be seen that the four points of the average dose rate is far lower than the China spallation neutron source 10 mSv/a of management requirements. The 9-day monitoring spectrogram of the white neutron experimental area and the target station water cooling equipment can be seen that, with the increase and decrease of the operating power, the monitor can reflect the real-time dose rate change. The spectrum of the environmental monitoring site for 9 days shows that the dose level of the environment is always at the natural background level, below the national limit of 0.1 mSv/a.