一套用于激光多步共振电离截面测量的多定标数据获取系统  

A data acquisition system for measuring ionization cross section in laser multi-step resonant ionization experiment

作　　者：钱东斌[1] 马新文[1] 赵之正[1] 王彦瑜[1] 郭玉辉[1] 祖凯玲[1] 张大成[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《核技术》2006年第11期859-863,共5页Nuclear Techniques

摘　　要：本文主要介绍了一套应用于激光多步共振电离截面测量的CAMAC多定标数据获取系统。它可以实现严格同步采集多个实验参数,并能灵活适应实验条件的宽范围变化。CAMAC前端的定标器数目可通过更改数据读出表文件来任意增减;获取方式分为自动重复获取和手动单次获取;获取时间单位可在1ms—800s范围内调节。经过测试得到,本数据获取系统的获取时间单位选择100s时长时间工作的稳定性(△t/t)好于±0.01%,充分证实了该套数据获取系统长时间在线采集实验数据的可靠性。最后利用这套系统同步测量了三台热电偶激光功率探头的功率-响应时间曲线。A CAMAC data acquisition system for measuring ionization cross section in laser multi-step resonant ionization experiment is described. The number of scalers in the front-end CAMAC can be adjusted by changing the data read-out table files. Both continuous and manual acquisition models are available, and there is a wide adjustable range from lms to 800 s with the acquisition time unit. The long-term stability, △t/t, for the data acquisition system with an acquisition time unit of 100 s was measured to be better than ±0.01%, thus validating its reliability in long-term online experimental data acquisition. The time response curves for three electrothermal power-meters were also measured by this DAQ system.

关 键 词：CAMAC 数据获取 机箱控制器.GTBC 多路定标 精密脉宽时钟发生器 

分 类 号：TL67[核科学技术—核技术及应用]