高精度数据驱动型TDC在高能物理实验中应用的研究  

The test of data driven TDC application in high energy physics experiment

作　　者：刘树彬[1] 郭建华[1] 张艳丽[1] 赵龙[1] 安琪[1] 

机构地区：[1]中国科学技术大学近代物理系快电子学实验室,合肥230026

出　　处：《核技术》2006年第1期72-76,共5页Nuclear Techniques

摘　　要：目前国际国内高能物理方面时间数字转换的发展趋势是使用集成的、高精度、多次击中型TDC,数据驱动型TDC(DataDrivenTDC)是其中的热点。研究高性能TDC的具体指标以及改进的方法对高能物理实验中的应用具有指导作用。我们对北京谱仪(BESIII)中考虑使用的一种新型高精度TDC进行了测量研究。本文介绍了我们为此建立的测量平台,和对该TDC进行非线性、分辨率、双脉冲分辨等测量的手段和结果,探讨了对其进行甚高精度(24.4ps)修正的方法,给出了修正的效果。In the high energy physics domain there is a trend to use integrated, high resolution, multi-hit time-digital-converter for time measurement, of which the data driven TDC is an important direction. Study on the method of how to test high performance TDC＇s characters and how to improve these characters will help us to select the proper TDC. We have studied the testing of a new high resolution TDC, which is planned to use in the third modification project of Beijing Spectrometer （BESIII）. This paper introduces the test platform we built for the TDC, and the method by which we tested for nonlinearity, resolution, double pulse resolution characters, etc. The paper also gives the test results and introduces the compensation way to achieve a very high resolution （24.4 ps）.

关 键 词：HPTDC 时间分辨率 码密度测量 非线性 线延迟测量 修正 

分 类 号：TN0[电子电信—物理电子学]