TeO_2晶体材料的纯度和低本底γ测量

TeO_2 crystal materials purity and low background gamma measurement

CUORE是测量中微子质量和性质的实验装置,本文介绍我们在其探测单元生长过程中,控制其放射性污染的测量方法和技术,为控制污染所采取的具体方法和技术,包括本底的γ射线测量,原料所含的微量元素的纯度测量,γ射线的检测,以及为γ射线检测所进行的探测器的探测效率的实验和模拟计算。

CUORE （Cryogenic Underground Observatory for Rare Events） is one neutrino detection system. Techniques and methods to control the radiation during the CUORE module production are introduced, including the results heavy elements amount in TeO2 powder and acid, gamma ray measurement, the detection efficient of the gamma ray HPGe detector and the comparison with GEANT4 simulation.