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

A precise time measurement evaluation board for a radiography system of high- Z materials 1 2 first-author 1 2 corresp Corresponding author. E-mail address: simonlh@ustc.edu.cn Corresponding author. E-mail address: simonlh@ustc.edu.cn simonlh@ustc.edu.cn 3 1 2 State Key Laboratory of Particle Detection & Electronics, Hefei 230026, China State Key Laboratory of Particle Detection & Electronics, Hefei 230026, China Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China 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. Radiography Time measurement TDC CFD Resolution Linearity References Hohlmann M , Ford P , Gnanvo K . IEEE Trans Nucl Sci , 2009 , 56 : 1356 - 1363 . IEEE Trans Nucl Sci Borozdin K N , Hogan G E , Morris C . Nature , 2003 , 422 : 277 - 277 . Nature Priedhorsky W C , Borozdin K N , Hogan G E . Rev Sci Instrum , 2003 , 74 : 4294 - 4297 . Rev Sci Instrum Schultz L J , Borozdin K N , Gomez J J . Nucl Instrum Meth Phys Res A , 2004 , 519 : 687 - 694 . Nucl Instrum Meth Phys Res A Xie Y G , Chen Ch , Wang M . Particle detectors and data acquisition , Beijing (China) : Science Press , 2003 , 91 - 104 . Particle detectors and data acquisition Yang T , Zhao B , Zhang Ch . Nucl Electr Detect Technol , 2002 , 5 : 244 - 246 . Nucl Electr Detect Technol TDC-GP2.2-channel Universal Time-to-Digital Converter , version 2.0 , May, 2010 . TDC-GP2.2-channel Universal Time-to-Digital Converter Zhang Y H , Li F , Jin G . Nucl Tech , 2007 , 3 : 227 - 230 . Nucl Tech 10.13538/j.1001-8042/nst.23.284-288 Supported by National Natural Science Foundation of China (Grant No. 11005108) 2011-11-16 2012-10-20 2021-01-19 2012 Nuclear Science and Techniques 05 23