Patents by Inventor David L. Chichester

David L. Chichester has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10114130
    Abstract: Neutron detectors for measuring a neutron yield of a neutron generator may include at least one particle counter disposed in a housing and at least one removable cartridge for receiving at least one collection medium. The at least one removable cartridge configured to be at least partially inserted into the housing to position the collection medium proximate the at least one particle counter. Detector assemblies for evaluating an output of a particle generator may include a housing and a plurality of cartridges that may be selectively received in the housing. Methods of detecting an output of a neutron source include inserting a collection medium into a cartridge, positioning the collection medium proximate a neutron source, and inserting the cartridge with the collection medium into a housing of a neutron yield detector.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 30, 2018
    Assignee: Battelle Energy Alliance, LLC
    Inventors: David L. Chichester, Scott J. Thompson, James T. Johnson, Scott M. Watson, Robert S. Schley
  • Publication number: 20180149761
    Abstract: Neutron detectors for measuring a neutron yield of a neutron generator may include at least one particle counter disposed in a housing and at least one removable cartridge for receiving at least one collection medium. The at least one removable cartridge configured to be at least partially inserted into the housing to position the collection medium proximate the at least one particle counter. Detector assemblies for evaluating an output of a particle generator may include a housing and a plurality of cartridges that may be selectively received in the housing. Methods of detecting an output of a neutron source include inserting a collection medium into a cartridge, positioning the collection medium proximate a neutron source, and inserting the cartridge with the collection medium into a housing of a neutron yield detector.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 31, 2018
    Inventors: DAVID L. CHICHESTER, SCOTT J. THOMPSON, JAMES T. JOHNSON, SCOTT M. WATSON, ROBERT S. SCHLEY
  • Publication number: 20180137945
    Abstract: A nuclear fuel assay system comprises a nuclear fuel assembly comprising structures containing nuclear fuel, and a neutron collar surrounding sides of the nuclear fuel assembly and comprising pressurized 4He scintillation detectors. A system for assaying nuclear fuel, and a method of quantifying nuclear material are also described.
    Type: Application
    Filed: November 11, 2016
    Publication date: May 17, 2018
    Inventors: DAVID L. CHICHESTER, SCOTT J. THOMPSON, JAMES T. JOHNSON, JEFFREY D. SANDERS, SCOTT M. WATSON
  • Patent number: 9689814
    Abstract: A chemical detection system includes a frame, an emitter coupled to the frame, and a detector coupled to the frame proximate the emitter. The system also includes a shielding system coupled to the frame and positioned at least partially between the emitter and the detector, wherein the frame positions a sensing surface of the detector in a direction substantially parallel to a plane extending along a front portion of the frame. A method of analyzing composition of a suspect object includes directing neutrons at the object, detecting gamma rays emitted from the object, and communicating spectrometer information regarding the gamma rays. The method also includes presenting a GUI to a user with a dynamic status of an ongoing neutron spectroscopy process. The dynamic status includes a present confidence for a plurality of compounds being present in the suspect object responsive to changes in the spectrometer information during the ongoing process.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: June 27, 2017
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Augustine J. Caffrey, David L. Chichester, Ann E. Egger, Kenneth M. Krebs, Edward H. Seabury, Clinton D. Van Siclen, C. Jayson Wharton, John M. Zabriskie
  • Publication number: 20160358679
    Abstract: A method of determining an amount of fissile material in a reactor includes sensing neutrons or photons emitted from the reactor before and after a change in a reactor operating parameter and determining a mass of fissile material responsive to a difference between the intensities of the radiation. A system for determining an amount of fissile material includes a radiation detector and a computing system. The radiation detector may be configured to detect neutrons or photons. The computing system may be configured for calculating mass of the fissile material based at least in part on a change in the power output from the reactor as a function of time. Some methods include collecting radiation emitted by a reactor, generating an electrical signal responsive to the collected radiation, and evaluating mass of the fissile material responsive to the magnitude and response of the electrical signal after a change in the reactor.
    Type: Application
    Filed: June 2, 2016
    Publication date: December 8, 2016
    Inventors: SEAN R. MORRELL, THOMAS V. HOLSCHUH, WADE R. MARCUM, DAVID L. CHICHESTER
  • Publication number: 20150309185
    Abstract: Systems and methods of monitoring radiation include a radiation monitoring glove. The glove is to be worn by a person that may be exposed to the radiation and includes at least one fiber sleeve attached to at least one finger of the glove. The glove also includes at least one scintillating fiber disposed in the at least one fiber sleeve. The scintillating fiber is configured for generating photons responsive to exposure to radiation in proximity thereto. The glove also includes a photon-sensing device disposed in a collector pocket on the glove. The photon-sensing device is operably coupled to a distal end of the one or more scintillating fibers.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 29, 2015
    Applicant: Battelle Energy Alliance, LLC
    Inventors: David L. Chichester, Scott M. Watson, Madelyn R. Wolter
  • Patent number: 9046619
    Abstract: Methods and apparatus to capture images of fluorescence generated by ionizing radiation and determine a position of a beam of ionizing radiation generating the fluorescence from the captured images. In one embodiment, the fluorescence is the result of ionization and recombination of nitrogen in air.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: June 2, 2015
    Assignees: Raytheon Company, U.S. Department of Energy
    Inventors: Brandon W. Blackburn, David L. Chichester, Scott M. Watson, James T. Johnson, Mathew T. Kinlaw
  • Patent number: 8625744
    Abstract: The present disclosure relates, according to some embodiments, to apparatus, devices, systems, and/or methods for real-time detection of a concealed or camouflaged explosive device (e.g., EFPs and IEDs) from a safe stand-off distance. Apparatus, system and/or methods of the disclosure may also be operable to identify and/or spatially locate and/or detect an explosive device. An apparatus or system may comprise an x-ray generator that generates high-energy x-rays and/or electrons operable to contact and activate a metal comprised in an explosive device from a stand-off distance; and a detector operable to detect activation of the metal. Identifying an explosive device may comprise detecting characteristic radiation signatures emitted by metals specific to an EFP, an IED or a landmine. Apparatus and systems of the disclosure may be mounted on vehicles and methods of the disclosure may be performed while moving in the vehicle and from a safe stand-off distance.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 7, 2014
    Assignees: U.S. Department of Energy, Raytheon Company
    Inventors: Brandon W. Blackburn, Alan W. Hunt, David L. Chichester
  • Publication number: 20130153773
    Abstract: Methods and apparatus to capture images of fluorescence generated by ionizing radiation and determine a position of a beam of ionizing radiation generating the fluorescence from the captured images. In one embodiment, the fluorescence is the result of ionization and recombination of nitrogen in air.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Inventors: Brandon W. Blackburn, David L. Chichester, Scott M. Watson, James T. Johnson, Mathew T. Kinlaw
  • Publication number: 20110121979
    Abstract: The present disclosure relates, according to some embodiments, to apparatus, devices, systems, and/or methods for real-time detection of a concealed or camouflaged explosive device (e.g., EFPs and IEDs) from a safe stand-off distance. Apparatus, system and/or methods of the disclosure may also be operable to identify and/or spatially locate and/or detect an explosive device. An apparatus or system may comprise an x-ray generator that generates high-energy x-rays and/or electrons operable to contact and activate a metal comprised in an explosive device from a stand-off distance; and a detector operable to detect activation of the metal. Identifying an explosive device may comprise detecting characteristic radiation signatures emitted by metals specific to an EFP, an IED or a landmine. Apparatus and systems of the disclosure may be mounted on vehicles and methods of the disclosure may be performed while moving in the vehicle and from a safe stand-off distance.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Applicant: Raytheon Company
    Inventors: Brandon W. Blackburn, Alan W. Hunt, David L. Chichester