Journal ArticleDOI
Pulse Timing System for Use with Gamma Rays on Ge(Li) Detectors
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TLDR
A zero crossing technique has been employed to reduce energy‐dependent time errors when detecting gamma rays with Ge(Li) detectors to minimize timing errors associated with pulse shape variation.Abstract:
A zero crossing technique has been employed to reduce energy‐dependent time errors when detecting gamma rays with Ge(Li) detectors. The timing errors associated with pulse shape variation have been evaluated so that circuit parameters might be chosen to minimize those errors. Results of coincidence measurements using a plastic scintillator and a Ge(Li) detector are presented. Typical results using an 8 cc planar detector are 0.8 nsec FWHM at 2.75 MeV, 2.8 nsec FWHM at 511 keV, and 1.5 nsec variation in coincidence peak position from 500 keV to 2.75 MeV.read more
Citations
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Journal Article
Fast-timing methods for semiconductor detectors
TL;DR: In this article, the authors present a fast-time detection method for semiconductor detectors, which is based on the Fast-TIMing METHODs for SEMICONDUCTOR DETECTORS (FTMM) presented by Helmuth Spieler.
Journal ArticleDOI
On the construction of a fast constant fraction trigger with integrated circuits and application to various photomultipliertubes
M.R. Maier,P. Sperr +1 more
TL;DR: In this paper, a simple realisation of a constant fraction of pulse height trigger with integrated circuits is described, and some results for time walk and time resolution are given which were obtained with Valvo XP 1021, RCA 8575, and RCA C 31000 D photomultipliertubes and 1.5″ × 1.0″ Naton 136 scintillator.
Journal ArticleDOI
Fast Timing Methods for Semiconductor Detectors
TL;DR: In this paper, the basic parameters which determine the accuracy of timing measurements and their effect in a practical application, specifically timing with thin-surface barrier detectors, are discussed, focusing on properties of the detector, low-noise amplifiers, trigger circuits and time converters.
Book ChapterDOI
Single photon detection and timing - Experiments and techniques.
TL;DR: In this paper, the detection and timing of a single photoelectron released by light from a photosensitive surface of a photomultiplier, channel multiplier, avalanche multiplier photodiode, or other photodevice are discussed.
Journal ArticleDOI
Comparative study of the timing techniques currently employed with Ge detectors
Z.H. Cho,R.L. Chase +1 more
TL;DR: In this article, the effects of rise time variations and discontinuous slope changes at constant energy, as well as the energy-dependent time walks, are considered for the three most commonly used techniques for timing with Ge detectors, namely, the leading edge timing (LET), the extrapolated LEI (ELET), and amplitude and rise time-compensated (ARC) timing.
References
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Journal ArticleDOI
Semiconductor detectors for nuclear spectrometry, I
TL;DR: In this article, the authors discuss the problems associated with obtaining good energy resolution in detector systems dealing primarily with electrical noise and statistical fluctuations of the charge produced in the detector, and a semi-theoretical treatment of the detector pulse shape considerations is given.
Journal ArticleDOI
A constant fraction of pulse height trigger for optimum time resolution
D.A. Gedcke,W.J. McDonald +1 more
TL;DR: In this paper, a fast discriminator has been designed which triggers at a constant fraction of the input signal amplitude, when operated by the anode current pulse from a photomultiplier tube, making it possible to obtain optimum timing over a 100 : 1 dynamic range.
Journal ArticleDOI
A survey of the latest developments in delayed coincidence measurements
TL;DR: A survey of the techniques for measurement of sub-milli-mircosecond nuclear lifetimes by the delayed coincidence method is presented in this paper, where the time response and limitations of photomultiplier, plastic scintillator and associated electronics are discussed.
Journal ArticleDOI
A synchronising discriminator for scintillation counter pulses
TL;DR: In this paper, an amplitude discriminator circuit is described which is suitable for use with pulses from fast scintillation counters, where one part provides an output pulse which is closely synchronised to the input pulse over a wide range of amplitude.
Journal ArticleDOI
Multiple Coincidence Circuit
TL;DR: A general purpose “fast‐slow” multiple coincidence circuit is described, which can be used either to detect an early point on the rise of the input signals or the time of input signal zero transition and can be varied over a wide range without affecting the circuit recovery time.
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