Performance of a data acquisition system for a large germanium detector arrayA. Kimura1, M. Koizumi1, Y. Toh1, J. Goto2 and M. Oshima1
1 Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Ibaraki-ken, Japan
2 Niigata University, 1-757 Asahimachi-dori, Niigata-shi, Niigata-ken, Japan
Published online: 21 May 2008
We have evaluated the performance of our new data acquisition system (DAQ), which utilizes digital signal processing techniques and was developed for a 4π Ge spectrometer. The total energy resolution of this system was 2.5 keV in FWHM for 1.33-MeV gamma rays and 16.4 keV in FWHM for 10.83-MeV prompt gamma rays. The time resolution of timing signals, which are used for the measurements of coincident gamma rays, was 120 ns in FWHM. Those values fulfilled our requirements for the DAQ. A method of dead time correction with this system was also developed.
© CEA 2008