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 (4): 237-241 doi: 10.13538/j.1001-8042/nst.23.237-241

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A 16-channel gated integrator for high-resolution energy spectroscopy systems

ZHOU Chaoyang(1,2) SU Hong1 KONG Jie1 DONG Chengfu1 QIAN Yi1 YANG Haibo(1,2) MA Xiaoli1   

  1. 1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China
ZHOU Chaoyang, SU Hong, KONG Jie, DONG Chengfu, QIAN Yi, YANG Haibo, MA Xiaoli. A 16-channel gated integrator for high-resolution energy spectroscopy systems.Nuclear Science and Techniques, 2012, 23(4): 237-241     doi: 10.13538/j.1001-8042/nst.23.237-241

Abstract:

A 16-channel gated integrator(GI) module following semi-Gaussian shaping amplifiers was developed for high-resolution energy spectroscopy systems at Institute of Modern Physics,Chinese Academy of Sciences.This GI solved the ballistic deficit problem by integrating the signal until all the charge was collected from the detector at counting rates up to 100 K.In this paper,a fast shaper was used to optimize the gate logic to ensure nonlinearity of the GI less than 0.17%; and a novel compensation approach,to reduce the charge injection from the switches in the GI; and a T-switch configuration,to eliminate leakage current in the reset switch.

Key words: Energy spectroscopy, Gated integrator, Charge injection compensation, Leakage current elimination