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Improved Calibration Facility

Description: Aid in redesign of the calibration facility in order to: 1. Reduce the rate of exposure for calibration personnel below 1 mr/hr; 2. Reduce the rate of exposure outside of the 3745 Building; 3. Reduce the risk of breaking radium sources; 4. Improve the efficiency of calibration procedures by: a. Allowing calibration to be done faster; b. Providing several calibration ranges which can operate simultaneously in the present space allowed; c. Allowing instrument survey work to proceed while calibrat… more
Date: August 22, 1995
Creator: Roesch, W. C.
Item Type: Refine your search to only Report
open access

Sector 30 collimator radiation

Description: The collimators at Sector 30 of the SLAC accelerator are designed to scrape off a significant fraction (e.g., {approximately}20%) of the SLC beam. The electromagnetic cascade shower that develops in the collimator, and in the scraper and waveguide downbeam, leads to very high radiation exposures of TV cameras (and other devices) located nearby. The collimator (point) source accounts for one-third of the dose and is best shielded by extending the radius of the copper scraper. Radiation from the … more
Date: February 22, 1990
Creator: Namito, Y. (Ship Research Inst., Tokyo (Japan)); Nelson, W. R. & Benson, E.
Item Type: Refine your search to only Report
open access

Computational Quantum Chemistry [Website]

Description: This report contains the contents of a web page related to research on the development of quantum chemistry methods for computational thermochemistry and the application of quantum chemistry methods to problems in material chemistry and chemical sciences. Research programs highlighted include: Gaussian-2 theory; Density functional theory; Molecular sieve materials; Diamond thin-film growth from buckyball precursors; Electronic structure calculations on lithium polymer electrolytes; Long-distanc… more
Date: August 22, 1997
Item Type: Refine your search to only Report
open access

Radioactive demonstration of DWPF product control strategy

Description: The effectiveness of the product and process control strategies that will be utilized by the Defense Waste Processing Facility (DWPF) was demonstrated during a campaign in the Shielded Cells Facility (SCF) of the Savannah River Technology Center (SRTC). The remotely operated process included the preparation of the melter feed, vitrification in a slurry-fed 1/100th scale melter and analysis of the glass product both for its composition and durability. The campaign processed approximately 10 kg (… more
Date: April 22, 1992
Creator: Andrews, M. K. & Bibler, N. E.
Item Type: Refine your search to only Report
open access

High SO[sub 2] removal efficiency testing

Description: This document provides a discussion of the technical progress on DOE-PETC Project Number AC22-92PC91338, High Efficiency SO[sub 2] Removal Testing,'' for the time period from January 1 through March 31, 1993. The project involves testing at full-scale utility flue gas desulfurization (FGD) systems to evaluate low capital cost upgrades that may allow these systems to achieve up to 98% SO[sub 2] removal efficiency. The options to be evaluated primarily involve the addition of organic acid buffers… more
Date: April 22, 1993
Creator: Blythe, G.
Item Type: Refine your search to only Report
open access

High spectral resolution measurements for the ARM Program

Description: This report focuses on the design and fabrication of high spectral resolution FTIR (Fourier Transform Infrared) instrumentation for the CART sites of the Atmospheric Radiation Measurement (ARM) Program. The ultimate objective of this grant is to develop three different types of instruments, named the AERI, AERI-X, and SORT. The Atmospheric Emitted Radiance Interferometer (AERI) is the simplest. It will be available for early deployment at the first ARM site and will be deployable at several loc… more
Date: May 22, 1992
Creator: Revercomb, H. E.
Item Type: Refine your search to only Report
open access

Remediating biofouling of reverse osmosis membranes

Description: Several potential additives and the use of influent pH adjustment were examined to remediated the biofouling problem of the ETF reverse osmosis (RO) system. Tests were conducted with simulated RO feed containing salt, metal hydroxides and bacteria. The addition of sodium hexametaphosphate (SHMP), sodium bisulfite, and adjusting the influent pH to 3 were each successful in reducing the RO biofouling. Little or no benefit was found from the use of a biofilm remover (Filmtec Alkaline Cleaner) or t… more
Date: October 22, 1991
Creator: Siler, J. L.
Item Type: Refine your search to only Report
open access

Measurements of the Fermilab 200 MeV transfer line quadrupole magnets

Description: This report presents the results of measurements of two quadrupole magnets that are used in the 200 MeV transfer line. The measurements were performed to obtain data to evaluate the suitability of these magnets for use in a 400 MeV transfer line once the Linac Upgrade is complete. In order to provide a basis for comparison, data were obtained from Fermilab's Magnet Test Facility of measurements of magnets of similar size and strength that were built for the Loma Linda project. These Loma Linda … more
Date: March 22, 1990
Creator: Kroc, T.
Item Type: Refine your search to only Report
open access

Environmental report 1998, executive summary

Description: Lawrence Livermore National Laboratory (LLNL), a U.S. Department of Energy (DOE) facility operated by the University of California, serves as a national resource of scientific, technical, and engineering capabilities. The Laboratory's mission focuses on nuclear weapons and national security, and over the years has been broadened to include areas such as strategic defense, energy, the environment, biomedicine, technology transfer, the economy, and education. The Laboratory carries out this missi… more
Date: September 22, 1999
Creator: Larson, J. M.; Harrach, R. J.; Althouse, P. E.; Bertoldo, N. A.; Biermann, A. H.; Blake, R. G. et al.
Item Type: Refine your search to only Report
open access

Anti-proton tune measurements for the Fall 1995 accelerator studies

Description: A system to measure the tunes of a single antiproton (or proton) bunch was built and has been commissioned. The system achieved high sensitivity with a novel closed-orbit suppression system. The use of high bandwidth directional pickpus and kickers in conjunction with precise timing gates enabled the measurement of the tune of a single bunch.
Date: April 22, 1996
Creator: Marriner, John
Item Type: Refine your search to only Report
open access

Test facilities for evaluating nuclear thermal propulsion systems

Description: Interagency panels evaluating nuclear thermal propulsion (NTP) development options have consistently recognized the need for constructing a major new ground test facility to support fuel element and engine testing. This paper summarizes the requirements, configuration, and baseline performance of some of the major subsystems designed to support a proposed ground test complex for evaluating nuclear thermal propulsion fuel elements and engines being developed for the Space Nuclear Thermal Propuls… more
Date: September 22, 1992
Creator: Beck, D. F.; Allen, G. C.; Shipers, L. R.; Dobranich, D.; Ottinger, C. A.; Harmon, C. D. et al.
Item Type: Refine your search to only Article
open access

(Direct coal liquefaction baseline design and system analysis)

Description: The primary objective of the study is to develop a computer model for a base line direct coal liquefaction design based on two stage direct coupled catalytic reactors. This primary objective is to be accomplished by completing the following: a base line design based on previous DOE/PETC results from Wilsonville pilot plant and other engineering evaluations; a cost estimate and economic analysis; a computer model incorporating the above two steps over a wide range of capacities and selected proc… more
Date: June 22, 1992
Item Type: Refine your search to only Report
open access

Sensor modules for wireless distributed sensor networks

Description: A national security need as well as environmental monitoring need exists for networks of sensors. The advantages of a network of sensors over a single sensor are improved range, sensitivity, directionality, and data readability. Depending upon the particular application, sensors can be acoustic, chemical, biological, thermal or inertial. A major desire in these sensor networks is to have the individual sensor and associated electronics small and low enough in power that the battery can also be … more
Date: February 22, 1999
Creator: Lee, A. P.; McConaghy, C. F.; Simon, J. N.; Benett, W.; Jones, L. & Trevino, J.
Item Type: Refine your search to only Report
open access

Testbed model and data assimilation for ARM. Progress report No. 2, 1 March 1991--31 August 1992 (revised)

Description: The objectives of this contract are to further develop and test the ALFA (AER Local Forecast and Assimilation) model originally designed at AER for local weather prediction and apply it to three distinct but related purposes in connection with the Atmospheric Radiation Measurement (ARM) program: (a) to provide a testbed that simulates a global climate model in order to facilitate the development and testing of new cloud parametrizations and radiation models; (b) to assimilate the ARM data conti… more
Date: September 22, 1992
Creator: Louis, J. F.
Item Type: Refine your search to only Report
open access

Pulsed laser kinetic studies of liquids under high pressure. Progress report, November 25, 1991--September 18, 1992

Description: A laser flash photolysis kinetic study of 2,2{prime}-bipyridine bidentate chelating ligands with one claw in the first coordination sphere of a molybdenum carbonyl complex has been completed at pressures up to 150 MPa. The reaction mechanism for thermal ring closure is found from activation volumes to change from associative interchange to dissociative interchange as substituents on the 2,2{prime}-bipyridine ligands become bulkier. In a similar study of more rigid, substituted phenanthroline bi… more
Date: September 22, 1992
Creator: Eyring, E. M.
Item Type: Refine your search to only Report
open access

Primary water stress corrosion cracking of Alloy 600: Effects of processing parameters

Description: Correlations of stress corrosion cracking (SCC) data in deaerated water with temperature, stress, metallography, and processing for laboratory test specimens are presented. Initiation time data show that a low temperature anneal and resulting absence of grain boundary carbides result in a material having increased susceptibility to SCC. Data also show that hot worked and annealed Alloy 600 is more resistant than cold worked and annealed material, both having carbide decorated grain boundaries. … more
Date: October 22, 1993
Creator: Seman, D. J.; Webb, G. L. & Parrington, R. J.
Item Type: Refine your search to only Article
open access

Hazardous waste cleanup at federal facilities: Need for an integrated policy

Description: The U.S. Department of Energy (DOE) has generated and disposed of large volumes of hazardous and radioactive waste as a result of 50 years of nuclear weapons production. DOE is now faced with the problem of remediating its more than 13,000 hazardous waste sites. To be effective for the good of the environment and public health, our nation`s hazardous waste policy must first address several questions: What is the level of risk at federal facilities? (Is remediation really necessary?) Can and sho… more
Date: September 22, 1993
Creator: Travis, C. C. & Ladd, B.
Item Type: Refine your search to only Article
open access

Radioactive demonstration of DWPF product control strategy

Description: The effectiveness of the product and process control strategies that will be utilized by the Defense Waste Processing Facility (DWPF) was demonstrated during a campaign in the Shielded Cells Facility (SCF) of the Savannah River Technology Center (SRTC). The remotely operated process included the preparation of the melter feed, vitrification in a slurry-fed 1/100th scale melter and analysis of the glass product both for its composition and durability. The campaign processed approximately 10 kg (… more
Date: April 22, 1992
Creator: Andrews, M. K. & Bibler, N. E.
Item Type: Refine your search to only Report
open access

Advanced reactors transition fiscal year 1995 multi-year program plan WBS 7.3

Description: This document describes in detail the work to be accomplished in FY-1995 and the out years for the Advanced Reactors Transition (WBS 7.3). This document describes specific milestones and funding profiles. Based upon the Fiscal Year 1995 Multi-Year Program Plan, DOE will provide authorization to perform the work outlined in the FY 1995 MYPP. Following direction given by the US Department of Energy (DOE) on December 15, 1993, Advanced Reactors Transition (ART), previously known as Advanced Reacto… more
Date: September 22, 1994
Creator: Loika, E. F.
Item Type: Refine your search to only Report
open access

Anisotropy and spatial variation of relative permeability and lithologic character of Tensleep Sandstone reservoirs in the Bighorn and Wind River basins, Wyoming. Third quarterly technical progress report, April 1, 1994--June 30, 1994

Description: This multidisciplinary study is designed to provide improvements in advanced reservoir characterization techniques. This goal is to be accomplished through: (1) an examination of the spatial variation and anisotropy of relative permeability in the Tensleep Sandstone reservoirs of Wyoming; (2) the placement of that variation and anisotropy into paleogeographic, depositional, and diagenetic frameworks; (3) the development of pore-system imagery techniques for the calculation of relative permeabil… more
Date: July 22, 1994
Creator: Dunn, T. L.
Item Type: Refine your search to only Report
open access

Large eddy simultations of the atmospheric boundary layer east of the Colorado Rockies

Description: Large eddy simulation, LES, has often been carried out for the idealized situation of a simple convective boundary layer. Studies of dual Doppler radar and aircraft data from the Phoenix II experiment indicate that the boundary layer of the Colorado High Plains is not a purely convective boundary layer and it is influenced by the mountains to the west. The purpose of this study is to investigate the atmospheric boundary layer on one particular day on the Colorado High Plains. This research appl… more
Date: October 22, 1992
Creator: Costigan, K. R. & Cotton, W. R.
Item Type: Refine your search to only Report
open access

Positron annihilation study of Sr Doping in La{sub 2-x}Sr{sub x}CuO{sub 4}

Description: We present a combined experimental and threshold study of effects of Sr doping on electronic structure of La{sub 2-x}Sr{sub x}CuO{sub 4}. Electron-positron momentum distributions have been measured to high statistical precision (> 4 {times} 10{sup 8} counts) at room temperature for samples with Sr concentrations of x = 0.0, 0.1, 0.13 and 0.2. Analysis of all four spectra reveal strong features due to electron-positron wavefunction overlap, in quantitative agreement with theoretical calculations… more
Date: April 22, 1993
Creator: Sterne, P. A.; Howell, R. H.; Fluss, M. J.; Kaiser, J. H.; Kitazawa, K. & Kojima, H.
Item Type: Refine your search to only Article
open access

Orientational phase transitions in alloys

Description: Plastic crystal behavior is observed in semiconducting CsPb and NaSn at high temperature (600 and 500 C, respectively). This behavior is associated with M{sub 4}{sup 4{minus}} or A{sub 4}M{sub 4} structural units orientationally disordering about 50 C below the melting point where translational disorder sets in. This orientational disorder is different in the two phases, exhibiting jump reorientations in CsPb and a more isotropic behavior in NaSn. In other Zintl compounds such as KPb, there is … more
Date: September 22, 1992
Creator: Saboungi, M. L.; Johnson, G. K. & Price, D. L.
Item Type: Refine your search to only Article
open access

The effects of 450 kg surface explosions at the E layer of the ionosphere. Los Alamos Source Region Project

Description: A network of hf ionospheric sounders consisting of two transmitter and two receiver stations was deployed to detect the effects of acoustic waves generated by surface ground motion following an underground nuclear test (UGT) at the Nevada Test Site. The frequency of the transmissions were chosen so that the hf radio waves were totally reflected in the E layer of the ionosphere at an altitude of approximately 100 km. The transmissions were highly stable cw tones at two frequencies separated by 1… more
Date: October 22, 1992
Creator: Fitzgerald, T. J. & Carlos, R. C.
Item Type: Refine your search to only Report
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