A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board

被引：7
|
作者：
An Ran [1 ]
Chen Bin [1 ]
Liu Yan-Fen [1 ]
Ye Bang-Jiao [1 ]
Kong Wei [1 ]
Ritt, Stefan [2 ]
机构：
[1] Univ Sci & Technol, Dept Modern Phys, State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China
[2] Paul Scherrer Inst, CH-5242 Villigen, Switzerland
来源：
CHINESE PHYSICS C | 2014年 / 38卷 / 05期
基金：
中国国家自然科学基金;
关键词：
digital lifetime spectrometer; timing; waveform sampling; DRS4; chip; FAST DIGITAL OSCILLOSCOPE;
D O I：
10.1088/1674-1137/38/5/056001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A new simple digital positron lifetime spectrometer has been developed. It includes a DRS4 waveform digitizing board and two scintillation detectors based on the XP2020Q photomultiplier tubes and LaBr3 scintillators. The DRS4 waveform digitizing can handle small pulses, down to few tens of millivolts, and its time scale linearity and stability are very good. The new system has reached a 206 ps time resolution, which is better than the conventional analog apparatus using the same detectors. These improvements make this spectrometer more simple and convenient in comparison with other spectrometers, and it can be applied to the other scintillation timing measurements with picosecond accuracy.
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页数：5
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