BEPCⅡ周边土壤及关键部件的感生放射性测量

Measurement of the Induced Radioactivity of the Soil and Accelerator Components of BEPCⅡ

用高纯锗γ谱仪测量北京正负电子对撞机周边土壤及关键部件的感生放射性。通过测量,得到BEPCⅡ环境土壤样品的γ放射性核素含量,对比BEPCⅡ运行前的测量结果表明:BEPCⅡ的运行未增加周边土壤的放射性核素成分和含量。对加速器隧道内的几处关键部件进行γ放射性核素测量,发现隧道内部件均受到不同程度的活化。

The HPGe γ spectrometer used in the study of induced radioactivity of soil sample and accelerator components of BEPCⅡ is presented. Compared to the results obtained before the operation of BEPCⅡ, measure- ments of gamma radioactive of soil samples indicate that the components and contents of the gamma radioactive nuclide has not increased with the operation of BEPCⅡ. Meanwhile, measurement of gamma radioactive at some accelerator components in the tunnel shows that the components in the tunnel are activated at different levels.