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Title: Method and apparatus for combinatorial logic signal processor in a digitally based high speed x-ray spectrometer

Abstract

A high speed, digitally based, signal processing system is disclosed which accepts a digitized input signal and detects the presence of step-like pulses in the this data stream, extracts filtered estimates of their amplitudes, inspects for pulse pileup, and records input pulse rates and system lifetime. The system has two parallel processing channels: a slow channel, which filters the data stream with a long time constant trapezoidal filter for good energy resolution; and a fast channel which filters the data stream with a short time constant trapezoidal filter, detects pulses, inspects for pileups, and captures peak values from the slow channel for good events. The presence of a simple digital interface allows the system to be easily integrated with a digital processor to produce accurate spectra at high count rates and allow all spectrometer functions to be fully automated. Because the method is digitally based, it allows pulses to be binned based on time related values, as well as on their amplitudes, if desired. 31 figs.

Inventors:
Issue Date:
Research Org.:
X-Ray Instrumentation Associates
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321286
Patent Number(s):
5873054
Application Number:
PAN: 8-730,916; TRN: 99:003321
Assignee:
William K. Warburton, Menlo Park, CA (United States)
DOE Contract Number:  
FG03-92ER81311
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 16 Feb 1999
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; X-RAY SPECTROMETERS; DIGITAL SYSTEMS; DATA PROCESSING; PARALLEL PROCESSING; DIGITAL FILTERS; DESIGN

Citation Formats

Warburton, W K. Method and apparatus for combinatorial logic signal processor in a digitally based high speed x-ray spectrometer. United States: N. p., 1999. Web.
Warburton, W K. Method and apparatus for combinatorial logic signal processor in a digitally based high speed x-ray spectrometer. United States.
Warburton, W K. Tue . "Method and apparatus for combinatorial logic signal processor in a digitally based high speed x-ray spectrometer". United States.
@article{osti_321286,
title = {Method and apparatus for combinatorial logic signal processor in a digitally based high speed x-ray spectrometer},
author = {Warburton, W K},
abstractNote = {A high speed, digitally based, signal processing system is disclosed which accepts a digitized input signal and detects the presence of step-like pulses in the this data stream, extracts filtered estimates of their amplitudes, inspects for pulse pileup, and records input pulse rates and system lifetime. The system has two parallel processing channels: a slow channel, which filters the data stream with a long time constant trapezoidal filter for good energy resolution; and a fast channel which filters the data stream with a short time constant trapezoidal filter, detects pulses, inspects for pileups, and captures peak values from the slow channel for good events. The presence of a simple digital interface allows the system to be easily integrated with a digital processor to produce accurate spectra at high count rates and allow all spectrometer functions to be fully automated. Because the method is digitally based, it allows pulses to be binned based on time related values, as well as on their amplitudes, if desired. 31 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {2}
}

Works referenced in this record:

An analog-to-digital conversion based on a moving window deconvolution
journal, January 1994


Digital pulse-shape analyzer based on fast sampling of an integrated charge pulse
journal, January 1995


A new pulse height analysis system based on fast ADC digitizing technique
journal, August 1993


Digital techniques for real-time pulse shaping in radiation measurements
journal, December 1994

  • Jordanov, Valentin T.; Knoll, Glenn F.; Huber, Alan C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 353, Issue 1-3
  • https://doi.org/10.1016/0168-9002(94)91652-7

X‐ray signal processing electronics for solid state detectors
journal, February 1995