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Amplifier with time-invariant trapezoidal shaping and shape-sensitive pileup rejector for high-rate spectroscopy

Conference · · IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:6177741
An amplifier with trapezoidal pulse shaping was developed for high-rate high-energy gamma spectroscopy using NaI(T1) scintillation detectors. It employs a double delay-line technique for producing a nearly triangular pulse shape combined with a linear circuit for producing a flattopped pulse. Good energy resolution and short resolving time make this amplifier especially suitable for high count rate gamma ray spectroscopy. To provide a versatile high-performance system, it includes a pileup rejector based on inspection of a pileup signal obtained by combining the slow output signal and fast-shaped input signal. The trapezoidal shape provides a short resolving time for minimal occurrence of pileup with a width suitable for presentation to a standard multichannel analyzer. The performance of the system was tested, and the results are presented.
Research Organization:
Boris Kidric Institute of Nuclear Sciences, Belgrade (YU); Science Applications International Corp., Santa Clara, CA (US)
OSTI ID:
6177741
Report Number(s):
CONF-881103-
Conference Information:
Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: 36:1
Country of Publication:
United States
Language:
English