Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2012, Vol. 23 ›› Issue (5): 284-288 doi: 10.13538/j.1001-8042/nst.23.284-288

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A precise time measurement evaluation board for a radiography system of high-Z materials

DOU Fei 1,2 LIANG Hao 1,2,* ZHOU Lei 3 ZHOU Yongzhao 1,2   

  1. 1 State Key Laboratory of Particle Detection & Electronics, Hefei 230026, China 2 Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China 3 Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
DOU Fei, LIANG Hao, ZHOU Lei, ZHOU Yongzhao. A precise time measurement evaluation board for a radiography system of high-Z materials.Nuclear Science and Techniques, 2012, 23(5): 284-288     doi: 10.13538/j.1001-8042/nst.23.284-288

Abstract:

The time resolution of a radiography system for high-Z materials shall be at least 1 ns, hence the need of a time measurement system with a resolution of about 100 ps. In this paper, a Time Measurement Evaluation Board (TMEB) is developed to meet the need. It is based on the time-to-digital converter of ACAM TDC-GP2. Test results show an overall time resolution of 81 ps in detecting cosmic-rays with a plastic scintillator.

Key words: Radiography, Time measurement, TDC, CFD, Resolution, Linearity