William R Russ

US Patent:

7274013, Sep 25, 2007

Filed:

Jun 13, 2003

Appl. No.:

10/461760

Inventors:

William R. Russ - East Hampton CT, US
Frazier L. Bronson - Branford CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

G01D 18/00

US Classification:

2502521

Abstract:

In a preferred embodiment, an automatic gain adjust method for radiation spectrometers, including: placing a calibration source emitting known energies at a radiation detector; acquiring a spectrum of the known energies; automatically analyzing the spectrum and comparing the spectrum with the known energies; automatically adjusting gain of an amplifier of the spectrum until peaks of the spectrum are in correct channels.

US Patent:

7462837, Dec 9, 2008

Filed:

Aug 26, 2005

Appl. No.:

11/661221

Inventors:

William R. Russ - East Hampton CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

G01J 1/42
G01T 1/00

US Classification:

250395, 2502521, 250362, 250369

Abstract:

In a preferred embodiment, a method of identifying nuclides, including the steps of: determining spectral continuum via a peak erosion process to render a residual peak spectrum; filtering a standard nuclide library specified by a user to select candidate nuclides; simultaneously fitting calibrations and activities of selected candidate nuclides from the standard library to the peak spectrum using a standard least squares method; calculating statistical significances of optimized nuclide activities and determining shape correlations between optimized candidate nuclide peak spectra and measured peak spectrum with alternative candidates subtracted; and identifying and providing activities of nuclides determined to have sufficiently significant activities and sufficient shape correlations.

US Patent:

7636638, Dec 22, 2009

Filed:

Nov 27, 2007

Appl. No.:

11/945851

Inventors:

William Robert Russ - East Hampton CT, US
Massimo Morichi - Madison CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

G01N 31/00

US Classification:

702 22, 250363, 25037001, 25037013, 702 76, 702 85

Abstract:

A system for combining the spectral data from multiple ionizing radiation detectors of different types and having different photopeak energy resolutions. First, baseline estimation is performed on each spectral histogram separately, discerning peak regions from underlying continuum using respective peak response functions. All spectra are subsequently rebinned to the same energy calibration and the peak spectra are convolved to produce a single convolution spectrum. All peak counts are redistributed locally according to the convolution spectrum in energy regions proportional to respective local energy resolution. The summation of these redistributed peak spectra can then be analyzed as a single spectrum using a common photopeak response and energy calibration. This process can be embodied in software or firmware. A preferred hybrid system might include a combination of lower resolution, higher efficiency detectors and higher resolution, lower efficiency detectors.

US Patent:

7888631, Feb 15, 2011

Filed:

Aug 11, 2006

Appl. No.:

12/067609

Inventors:

Fazier Bronson - Branford CT, US
William Russ - East Hampton CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

G01D 18/00

US Classification:

2502521

Abstract:

The method of analyzing the measured radiation spectra to estimate the identified nuclide activities using a designated efficiency calibration based on average expected geometry and using spectral characteristics to flag significant shielding that would otherwise skew said nuclide activities (FIG. ). And providing an estimation of activity correction factor or attenuation factor for each affected nuclide ().

US Patent:

7957939, Jun 7, 2011

Filed:

Feb 1, 2006

Appl. No.:

11/883201

Inventors:

Frazier Bronson - Branford CT, US
William Russ - East Hampton CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

H03F 1/26

US Classification:

702190

Abstract:

Methods of detecting radioactivity in dynamic situations in which radiation is detected from large and small radioactive objects with at least one radiation detector as the objects pass through the field of view and combinations are made from those measurements which are either adjacent in time, from multiple detectors, or at different energies. An elevated signal is reported when an analysis of the various combinations shows an elevated signal in anyone combination. Small amounts of radioactivity can be detected even in the presence of large amounts.

US Patent:

20100264319, Oct 21, 2010

Filed:

Sep 4, 2009

Appl. No.:

12/554716

Inventors:

Massimo Morichi - Madison CT, US
Marijke Keters - Leuven, BE
Frazier Bronson - Branford CT, US
Robert A. Zakrzewski - Wallingford CT, US
Olivier Evrard - Brussels, BE
William R. Russ - East Hampton CT, US

International Classification:

G01T 1/20
G01T 1/24

US Classification:

250362, 250361 R

Abstract:

A radiation detection apparatus that utilizes a radiation sensor device that includes a scintillator device that is optically coupled to a plurality of silicon drift detector devices. Each silicon drift detector device segment includes an output anode that supplies the segment output to dedicated sensor processing circuitry. With each anode having dedicated processing circuitry, each output can be processed simultaneously. Also provided is a spectroscopic analysis device that is coupled with the sensor processing circuitry for computing spectral data associated with the radiation detection event. The spectroscopic analysis device accurately characterizes the detected radionuclide and prepares the results for display before the user. Networking capabilities also allow multiples of such apparatuses to communicate in an intelligent grid, providing even greater radionuclide characterization capabilities.

US Patent:

20120305756, Dec 6, 2012

Filed:

Apr 26, 2012

Appl. No.:

13/457019

Inventors:

William R. Russ - East Hampton CT, US

International Classification:

G01T 1/36

US Classification:

2502521, 2503361

Abstract:

A spectrometer calibration system and method that permits a database of spectral peak shapes to be applied as basis template functions to characterize a radiation detector is disclosed. The disclosed system/method interpolates stored arrays representing a series of spectral peak shapes at a range of specified energies to enable formation of a calibration peak shape template at any desired spectral energy level. These basis functions may be generated from analytical functions and/or empirically measured spectral data and produce output shape calibration templates that are independent of the generation method for the basis templates. The disclosed system/method acts as an abstraction layer between the method of peak shape determination and the use of the peak shape basis functions in any subsequent spectroscopic analysis, permitting rapid and inexpensive spectrometer calibration updates without the need for any embedded spectrometer software modifications.

US Patent:

20130173220, Jul 4, 2013

Filed:

Nov 12, 2012

Appl. No.:

13/674649

Inventors:

Canberra Industries, Inc. - Meriden CT, US
Ramkumar Venkataraman - Middletown CT, US
Andrey Leonidovich Bosko - Meriden CT, US
Nabil Menaa - Meriden CT, US
William Robert Russ - East Hampton CT, US

Assignee:

Canberra Industries, Inc. - Meriden CT

International Classification:

G06F 17/00
G01T 1/00

US Classification:

702189

Abstract:

A radiation analysis system/method that automatically optimizes the efficiency calibration of a counting system based on benchmark data and variable parameters associated with radiation source/sensor/environment (RSSE) combinations is disclosed. The system/method bifurcates RSSE context (SSEC) model parameters into WELL-KNOWN (fixed) parameters (WNP) and NOT-WELL-KNOWN (variable) parameters (NWP). The NWP have associated lower/upper limit values (LULV) and a shape distribution (LUSD) describing NWP characteristics. SSEC models are evaluated using randomized statistical NWP variations or by using smart routines that perform a focused search within the LULV/LUSD to generate model calibration values (MCV) and calibration uncertainty values (UCV) describing the overall SSEC efficiencies. Sensor measurements using the MCV/UCV generate a measurement value and uncertainty estimation value. An exemplary embodiment optimizes geometry models of radiation sources by benchmarking with respect to measurement data from spectroscopy detectors and/or dose rate detectors.

Address:

3526 Stettinius Ave, Cincinnati, OH 45208

VIN:

1GNFK13077J143643

Make:

CHEV

Model:

TAHO

Year:

2007