Zero dead time spectroscopy without full charge collection

Odell, Dan; Bushart, B.; Harpring, L. J.; Moore, F.S.; Riley, T.N.

doi:10.1016/s0168-9002(98)00984-x

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…The use of Field Programmable Gate Arrays (FPGAs) is now widely spread in these instruments [6], [7], allowing the implementation of traditionally cumbersome and time consuming algorithms in a fast and reliable way [3]. The theoretically near-optimum filtering is now a possibility for these digital spectrometers, along with a series of unprecedented procedures such as real-time amplitude correction of some frontend drawbacks like the incomplete charge collection and the ballistic deficit [8].…”

Section: Introductionmentioning

confidence: 99%

“…However, a series of limitations still remain for these spectrometers: (i) weighting functions are somehow standard in the way that the same functions are used regardless of the physical conditions present in the experimental apparatus being therefore still far from optimal, (ii) pulse pile-up events are still neglected thus reducing count rate efficiency or ignoring possible event correlations, (iii) achievable throughput is still away from the theoretically possible of the high resolution digital spectrometers. In order to overcome these limitations several hardware modules have been previously proposed [6], [7], using either Digital Signal Processors (DSP) or Field Programmable Gate Arrays (FPGA), or a combination of both [9], to attain high-speed acquisition and real-time processing. This kind of spectrometer digitizes pre-amplifier's signal, in order to minimize the external noise sources, thus by-passing the traditional analog electronic amplification and shaping blocks.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of digital spectrometers using a pulse streaming generator

Cardoso

Martins²,

Simões³

et al.

IEEE Symposium Conference Record Nuclear Science 2004.

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This paper presents a digital pulse streaming generator developed to test and optimize the design of real-time digital spectrometers. The purpose of this generator is to produce a stream of digital data capable of reproducing the typical pulse response of a pre-amplifier used with solid state or other radiation detectors. This process not only avoids the use of X-ray sources during the test and calibration procedures as it also allows the experimentalist to take in account as many stream pulse scenarios as he desires. Using this tool it is possible to simulate a number of signal parameters that are characteristics of each front-end electronic apparatus. Such parameters include pulse amplitude distribution, rise-time components, decay-time of RC feedback pre-amps, frequency of occurrence, ballistic deficit, etc., as well as noise parameters (amplitude, power spectra density, type, etc.). In order to test a specific digital spectrometer implementation, this generator includes step, delta and optionally 1/|f | noise sources. Pulse pile-up effects arise due to the fact that we use a Poisson distribution to reproduce a real stream of events. The digital data stream is directly fed into the FPGA reproducing the behavior of the fast acquisition channel (FADC) of the spectrometer. This is an important auxiliary tool to the design and debug of the FPGA, namely when the implementation of near-optimum signal-to-noise ratio filters is desired.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of digital spectrometers using a pulse streaming generator

Cardoso

Martins²,

Simões³

et al.

IEEE Symposium Conference Record Nuclear Science 2004.

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A novel non-linear recursive filter design for extracting high rate pulse features in nuclear medicine imaging and spectroscopy

Sajedi

Asl

et al. 2013

Medical Engineering & Physics

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A Reconfigurable Instrument System for Nuclear and Particle Physics Experiments

Sang¹,

Li²,

Xiao³

et al. 2014

Plasma Sci. Technol.

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We developed a reconfigurable nuclear instrument system (RNIS) that could satisfy the requirements of diverse nuclear and particle physics experiments, and the inertial confinement fusion diagnostic. Benefiting from the reconfigurable hardware structure and digital pulse processing technology, RNIS shakes off the restrictions of cumbersome crates and miscellaneous modules. It retains all the advantages of conventional nuclear instruments and is more flexible and portable. RNIS is primarily composed of a field programmable hardware board and relevant PC software. Separate analog channels are designed to provide different functions, such as amplifiers, ADC, fast discriminators and Schmitt discriminators for diverse experimental purposes. The high-performance field programmable gate array could complete high-precision time interval measurement, histogram accumulation, counting, and coincidence anticoincidence measurement. To illustrate the prospects of RNIS, a series of applications to the experiments are described in this paper. The first, for which RNIS was originally developed, involves nuclear energy spectrum measurement with a scintillation detector and photomultiplier. The second experiment applies RNIS to a G-M tube counting experiment, and in the third, it is applied to a quantum communication experiment through reconfiguration.

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Zero dead time spectroscopy without full charge collection

Cited by 7 publications

References 8 publications

Optimization of digital spectrometers using a pulse streaming generator

Optimization of digital spectrometers using a pulse streaming generator

A novel non-linear recursive filter design for extracting high rate pulse features in nuclear medicine imaging and spectroscopy

A Reconfigurable Instrument System for Nuclear and Particle Physics Experiments

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