Design of a High-Count-Rate Photomultiplier Base Board on PGNAA Application
Prompt Gamma Neutron Activation Analysis (PGNAA) technology has become the best choice to meet the needs of detecting the composition of industrial materials. High count rate is an important indicator of PGNAA and a large size NaI(Tl) detector is used. Two types of base board design are used to provide biasing voltage. “Simple” resistive base board design can not work properly in high count rate condition. The developed design with current source, achieved by transistors, can work properly in high count rate condition and has been greatly improved in various indicators. This paper includes PGNAA introduction, detector system introduction, two types of base board design and test result.
KeywordsPGNAA High count rate Base board
- 1.Liu, Y., Chen, L., Liang, F. et al.: High counting-rate data acquisition system for the applications of PGNAA. In: Real Time Conference (RT), 2016 IEEE-NPSS, pp. 1–4. IEEE (2016)Google Scholar
- 2.Heifets, M., Margulis, P.: Fully active voltage divider for PMT photo-detector. In: Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE, pp. 807–814. IEEE (2012)Google Scholar