Performance of digital data acquisition system in gamma-ray spectroscopy

• 作者: Di-Wen Luo Hong-Yi Wu Zhi-Huan Li Chuan Xu Hui Hua Xiang-Qing Li Xiang Wang Shuang-Quan Zhang Zhi-Qiang Chen Chen-Guang Wu Yu Jin Jie Lin
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: NUCLEAR ELECTRONICS AND INSTRUMENTATION
• 页码范围: 12-22
• 页数: 11页
• 语种: 英文

摘要

A newly developed digital data acquisition sys-tem,which is based on the digital pulse processor Pixie-16 modules by XIA LLC,was tested with the γ-ray detector array of the China Institute of Atomic Energy using the γ-ray source and in-beam γ-rays.A comparison between this digital data acquisition system and the conventional analog data acquisition system was made.At a low count rate,both systems exhibit good and comparable energy resolu-tions.At a high count rate above 8.8 k/s,while the energy resolution obtained by the analog system deteriorates sig-nificantly,the energy resolution obtained by the digital system is nearly unchanged.Meanwhile,experimental data with higher statistics can be collected by the digital system.The advantage of this digital system over the conventional analog system can be ascribed to its excellent capability of handling pile-up pulses at higher count rates,and the fact that it has nearly no dead time in data transmission and conversion.