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Planning for the next generation of standard electronics

Description: Recommendations of a committee for a new standard to meet needs of new high-energy physics experiments are summarized in a nontechnical manner. Existing standards, including CAMAC, were examined; it was felt that none would meet the future needs of high-energy physics. The original committee gave its recommendations and disbanded. The design committee has begun its work; it anticipates finishing in about two years, in time for application of its recommendations to ISABELLE. (RWR)
Date: September 9, 1977
Creator: Leipuner, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Head assembly for multiposition borehole extensometer

Description: A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight… more
Date: June 9, 1981
Creator: Frank, D.N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Survey of thermal imaging technology and applications at the Savannah River Site

Description: This memorandum is an introduction to thermal imaging systems and their use. Emission of infrared radiation from ideal and real materials is described, as are methods of detection in modern thermal imaging systems. Typical specifications and features of commercially available thermal imaging systems are described, and uses of thermal imaging are discussed. At the Savannah River Site (SRS), thermal imaging has been used extensively to measure the temperature of surface water that carries heat fr… more
Date: October 9, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical evaluation report on the proposed amendment to the technical specifications on the reactor protection system and the engineered safety features actuation system for Ft. Calhoun, Unit No. 1

Description: This report documents the technical evaluation of the application to amend the Technical Specifications for the Ft. Calhoun Unit No. 1 Nuclear Generating Plant. The review criteria are based on the Technical Specifications of St. Lucie and Calvert Cliffs, IEEE Standards, Combustion Engineering Standard Technical Specifications, and the Code of Federal Regulations. The evaluation compares the submittal made by the licensee with the NRC staff position and the review criteria and presents the revi… more
Date: April 9, 1982
Creator: Selan, J.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calculation of the energy-dependent efficiency of gridded /sup 3/He fast-neutron ionization chambers

Description: Research and development activities under this contract proceeded along several lines, including development of a gas jet facility for the transport and isolation of fission product activities with half lives in the range T/sub 1/2/ less than or equal to 2 sec, studies on the factors affecting the energy and timing resolution of gridded /sup 3/He ionization detectors for delayed neutron spectroscopy and the development of simple models for calculation of the beta-decay characteristics of short-… more
Date: February 9, 1982
Creator: Prussin, S.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Survey of digital imaging technology and applications at the Savannah River Site

Description: An introduction to methods of digital image analysis is presented. Modern commercially available digital image analysis systems are described, along with applications that may be useful to programs at the Savannah River Site (SRS). Systems to aid inspection of tritium reservoir fill stems and a system to enhance inspection of radiographs of pinch weld closures of tritium reservoirs have already been developed at SRS. Modern digital analysis systems based on personal computers have been and are … more
Date: October 9, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Ultra-Precise System for Electrical Resistivity Tomography Measurements

Description: The objective of this research was to determine the feasibility of building and operating an ERT system that will allow measurement precision that is an order of magnitude better than existing systems on the market today and in particular if this can be done without significantly greater manufacturing or operating costs than existing commercial systems. Under this proposal, we performed an estimation of measurement errors in galvanic resistivity data that arise as a consequence of the type of e… more
Date: December 9, 2008
Creator: LaBrecque, Douglas J & Adkins, Paula L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent results from the Crystal Barrel experiment

Description: The Crystal Barrel experiment has been constructed and installed at the Low Energy Antiproton Ring (LEAR) at CERN. It has been fully operational since late 1989. In this talk, recent results of meson spectroscopy in p[bar p]-annihilations are presented. The main emphasis is on all-neutral annihilations, the study of the strange quark content of the proton, and the investigation of the decay mode of il particles. A 2[sup ++] resonance decaying into [pi][degrees][pi][degrees]at a mass of 1515 [pl… more
Date: October 9, 1991
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Capabilities for measuring physiocochemical properties at high pressure. [Up to 2000/sup 0/C and 30 GPa]

Description: A group of high-pressure systems that measure physicochemical properties of various media up to 2000/sup 0/C and 30 GPa is described. With these systems it is possible to determine complete stress-strain behavior, ultrasonic velocities, permeability, phase studies, fracture-flow behavior, and optical and electrical properties. The apparatus is described in terms of published results, photographs, and schematic diagrams. 63 references.
Date: February 9, 1978
Creator: Heard, H.C. & Duba, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent results from the Crystal Barrel experiment

Description: The Crystal Barrel experiment has been constructed and installed at the Low Energy Antiproton Ring (LEAR) at CERN. It has been fully operational since late 1989. In this talk, recent results of meson spectroscopy in p{bar p}-annihilations are presented. The main emphasis is on all-neutral annihilations, the study of the strange quark content of the proton, and the investigation of the decay mode of il particles. A 2{sup ++} resonance decaying into {pi}{degrees}{pi}{degrees}at a mass of 1515 {pl… more
Date: October 9, 1991
Creator: The Crystal Barrel Collaboration
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Multi-frame x-ray imaging with a large area 40ps camera

Description: The authors have developed a large area short pulse framing camera that is capable of sixteen frames and shutter times of 40ps per frame. This is accomplished with a high fidelity electrical circuit and a L/D = 20 microchannel plate, driven by a short pulse (80ps) high amplitude electrical driver. They show results of this work they have done to support this type of shutter time and the difficulties associated with large area high speed shuttering.
Date: November 9, 1992
Creator: Bell, P. M.; Kilkenny, J. D.; Landen, O. L.; Hanks, R. L.; Wiedwald, J. D. & Bradley, D. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Charge Distribution Analysis instrument for catalysis and material science applications. Second quarterly technical progress report, January 1, 1994--March 31, 1994

Description: The instrument has four basic components: OEM analytical balance, pivot point and capacitor plates for sensing and controlling the position of the long inverted pendulum, gas confinement tower and high voltage bias electrodes, and furnace. Work during the second quarter has resulted in detailed design of the pivot point and capacitive sensing and control assembly to be attached onto the platen of a Denver Instruments A-series analytical balance.
Date: May 9, 1994
Creator: Freund, F. & Plombon, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Free Space Optical Communications Utilizing MEMS Adaptive Optics Correction

Description: Free space optical communications (FSO) are beginning to provide attractive alternatives to fiber-based solutions in many situations. Currently, a handful of companies provide fiberless alternatives specifically aimed at corporate intranet and sporting event video applications. These solutions are geared toward solving the ''last mile'' connectivity issues. There exists a potential need to extend this pathlength to distances much greater than a 1 km, particularly for government and military app… more
Date: July 9, 2002
Creator: Thompson, C. A.; Kartz, M. W.; Flath, L. M.; Wilks, S. C.; Young, R. A.; Johnson, G. W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Nanolaminate Thin Shell Mirrors

Description: The space science community has identified a need for ultra-light weight, large aperture optical systems that are capable of producing high-resolution images of low contrast. Current mirror technologies are limited due either to not being scalable to larger sizes at reasonable masses, or to lack of surface finish, dimensional stability in a space environment or long fabrication times. This paper will discuss the development of thin-shell, nano-laminate mirror substrates that are capable of bein… more
Date: August 9, 2002
Creator: Hickey, G S; Lih, S S & Barbee, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Using Plasmon Peaks in Electron Energy-Loss Spectroscopy to Determine the Physical and Mechanical Properties of Nanoscale Materials

Description: In this program, we developed new theoretical and experimental insights into understanding the relationships among fundamental universality and scaling phenomena, the solid-state physical and mechanical properties of materials, and the volume plasmon energy as measured by electron energy-loss spectroscopy (EELS). Particular achievements in these areas are summarized as follows: (i) Using a previously proposed physical model based on the universal binding-energy relation (UBER), we established c… more
Date: May 9, 2013
Creator: Howe, James M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Integro-differential equation analysis and radioisotope imaging systems. Research proposal. [Testing of radioisotope imaging system in phantoms]

Description: Design modifications of a five-probe focusing collimator coincidence radioisotope scanning system are described. Clinical applications of the system were tested in phantoms using radioisotopes with short biological half-lives, including /sup 75/Se, /sup 192/Ir, /sup 43/K, /sup 130/I, and /sup 82/Br. Data processing methods are also described. (CH)
Date: March 9, 1976
Creator: Hart, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Implementation And Performance of the ATLAS Second Level Jet Trigger

Description: ATLAS is one of the four major LHC experiments, designed to cover a wide range of physics topics. In order to cope with a rate of 40MHz and 25 interactions per bunch crossing, the ATLAS trigger system is divided in three different levels. The jet selection starts at first level with dedicated processors that search for high E{sub T} hadronic energy depositions. At the LVL2, the jet signatures are verified with the execution of a dedicated, fast jet reconstruction algorithm, followed by a calibr… more
Date: November 9, 2011
Creator: Conde Muino, Patricia; Aracena, I.; Brelier, B.; Cranmer, K.; Delsart, P. A.; Dufour, M. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Laboratory Directed Research and Development Annual Report for 2011

Description: This report documents progress made on all LDRD-funded projects during fiscal year 2011. The following topics are discussed: (1) Advanced sensors and instrumentation; (2) Biological Sciences; (3) Chemistry; (4) Earth and space sciences; (5) Energy supply and use; (6) Engineering and manufacturing processes; (7) Materials science and technology; (8) Mathematics and computing sciences; (9) Nuclear science and engineering; and (10) Physics.
Date: April 9, 2012
Creator: Hughes, Pamela J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation transmission measurements on a small warm ion chamber

Description: Measurements were made on a small warm ion chamber (WIC) to determine if high energy neutrons travelling up the gaps of the SLD end plates may pose a problem during an accident. Measurement results are given through gaps, through the WIC body thickness. Photon and neutron penetration through end caps and the main body of the WIC are then extrapolated to apply to the SLD. (LEW)
Date: October 9, 1986
Creator: Jenkins, T. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sequential probability ratio tests for reactor signal validation and sensor surveillance applications

Description: This paper examines the properties of sequential probability ratio tests (SPRT's) and the application of these tests to nuclear power reactor operation. Recently SPRT's have been applied to delayed-neutron (DN) signal data analysis using actual reactor data from the Experimental Breeder Reactor-II, which is operated by Argonne National Laboratory. The implementation of this research as part of an expert system is described. Mathematical properties of the SPRT are investigated, and theoretical r… more
Date: November 9, 1989
Creator: Humenik, K. (Maryland Univ., Baltimore, MD (USA)) & Gross, K. C. (Argonne National Lab., IL (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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