Discrimination, of non-radiation backgrounds in the proportional counter of MARDS

作者：Liang Na; Guo Xiaofeng; Luo Fei; Hao Fanhua; Ze RenDe; Xiang Qingpei^*; Chu Chengsheng; Xiang Yongchun; Yan Zhaotong; Li Wei

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2017, 848: 99-105.

DOI：10.1016/j.nima.2016.12.052

• MARDS
• Ar-37
• Digital pulse shape discrimination
• Principal component analysis
• Non-radiation background discrimination

The Movable Ar-37 Rapid Detection System (MARDS) was developed by the Institute of Nuclear Physics and Chemistry of the China Academy of Engineering Physics in 2006 for on-site inspections under the Comprehensive Test Ban Treaty. It is a small and portable system that can quickly acquire data at suspected nuclear test sites. In this work, digital pulse shape discrimination (PSD) was used to process data from test samples to reduce electronic noise. The experimental results demonstrate that PSD combined with principal component analysis can classify and reject many noise sources. Thus, the threshold for the signal can be set low, expanding MARDS valid data acquisition capability, especially in very low-level and low-energy counting situations.

• 出版日期2017-3-11
• 单位中国工程物理研究院; 清华大学; 中国工程物理研究院核物理与化学研究所