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Method and apparatus for digitally based high speed x-ray spectrometer

Patent ·
OSTI ID:871215
 [1];  [2]
  1. 1300 Mills St., Menlo Park, CA 94025
  2. Santa Cruz, CA
+ Show Author Affiliations

A high speed, digitally based, signal processing system which accepts input data from a detector-preamplifier and produces a spectral analysis of the x-rays illuminating the detector. The system achieves high throughputs at low cost by dividing the required digital processing steps between a "hardwired" processor implemented in combinatorial digital logic, which detects the presence of the x-ray signals in the digitized data stream and extracts filtered estimates of their amplitudes, and a programmable digital signal processing computer, which refines the filtered amplitude estimates and bins them to produce the desired spectral analysis. One set of algorithms allow this hybrid system to match the resolution of analog systems while operating at much higher data rates. A second set of algorithms implemented in the processor allow the system to be self calibrating as well. The same processor also handles the interface to an external control computer.

Research Organization:
X-RAY INSTRUMENTATION ASSOC
DOE Contract Number:
FG03-92ER81311
Assignee:
Warburton, William K. (Menlo Park, CA)
Patent Number(s):
US 5684850
OSTI ID:
871215
Country of Publication:
United States
Language:
English

References (7)

Digital pulse-shape analyzer based on fast sampling of an integrated charge pulse journal January 1995
Digital techniques for real-time pulse shaping in radiation measurements
  • 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
journal December 1994
A new pulse height analysis system based on fast ADC digitizing technique journal August 1993
Improving EDS Performance with Digital Pulse Processing book January 1995
Development and testing of a flash analog-to-digital converter based system for pulse shape discrimination of nuclear radiation pulses journal October 1994
X‐ray signal processing electronics for solid state detectors journal February 1995
An analog-to-digital conversion based on a moving window deconvolution journal January 1994

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