Proton and deuteron structure functions in muon scattering at 470 GeV (open access)

Proton and deuteron structure functions in muon scattering at 470 GeV

The proton and deuteron structure functions F{sub 2}{sup p} and F{sub 2}{sup d} measured in inelastic muon scattering with an average beam energy of 470 GeV. The data were taken at Fermilab experiment 665 during 1991-1992 using liquid hydrogen and deuterium targets. The F{sub 2} measurements are reported in the range 0.0008 < x < 0.6 and 0.2 < Q{sup 2} < 75 GeV{sup 2}. These are the first precise measurements of F{sub 2} in the low x and Q{sub 2} range of the data. The E665 data overlap in x with the HERA data, and there is a smooth connection in Q{sup 2} between the two data sets. At high Q{sup 2} the E665 measurements are consistent with QCD-evolved leading twist structure function models. The data are qualitatively described by structure function models incorporating the hadronic nature of the photon at low Q{sup 2}. The Q{sup 2} and the W dependence of the data measure the transition in the nature of the photon between a point-probe at high Q{sup 2} and a hadronic object at low Q{sup 2}.
Date: May 1, 1995
Creator: Kotwal, A.V. & Collaboration, E665
Object Type: Report
System: The UNT Digital Library
Summary report of incineration plenum fire: Building 771, July 2, 1980 (open access)

Summary report of incineration plenum fire: Building 771, July 2, 1980

At about 1100 on July 2, 1980, a temperature rise above normal was recorded on charts monitoring operation of the incinerator in Room 149, Building 771. The plenum overheat alarm sounded at 1215, emergency actions initiated, and the fire was extinguished and mop-up began at about 1300. Investigation determined that the fire in the plenum was caused by a heat rise in the system, a deteriorated bypass valve on the No. 3 heat exchanger (KOH scrubber), nitration of the urethane seal on the HEPA filter media to the filter frame, and accumulation of metallic fines on the filter media. It was concluded that the management system responded properly, except for the ring- down system to activate the Emergency Operations Center.
Date: May 31, 1995
Creator: Fretthold, J.K.
Object Type: Report
System: The UNT Digital Library
The Speciation of Groundwater Contaminated with Coal Pile Leachate at the Savannah River Site, South Carolina (open access)

The Speciation of Groundwater Contaminated with Coal Pile Leachate at the Savannah River Site, South Carolina

Modeling the transport of contaminant metals and designing systems for their remediation requires an understanding of the metal`s speciation. Thus, analysis of contaminant speciation and evaluation of the processes that can change the speciation should be done during characterization of the contaminated site. This approach is being used at the Savannah River Site for a metals contaminated site that will serve as a test platform for metals remediation technologies. The site is adjacent to a coal storage pile and the basin that contains the coal pile runoff. A network of well clusters allows definition of the plume, including profiles of contamination with depth. The groundwater is acidic (pH {approx} 2) and contains high concentrations of sulfate (up to 2300 mg/l) and metals, with chromium, nickel, cadmium and lead exceeding drinking water standards. Aluminum and total iron concentrations range up to 1326 mg/l and 7991 mg/l, respectively. Speciation calculations on dissolved contaminants indicate that as much as 65% of the lead, 54% of the cadmium, and 34% of the nickel may be present in sulfate complexes. Chromium occurs predominantly as Cr{sup +3}. There is evidence that some contaminant metals may be associated with colloidal material. Contamination in the groundwater is stratified …
Date: May 15, 1995
Creator: Denham, M. E. & Nichols, R. L.
Object Type: Article
System: The UNT Digital Library
Waste characterization of the 101-SY hydrogen mitigation mixing pump shipping container (open access)

Waste characterization of the 101-SY hydrogen mitigation mixing pump shipping container

The Hydrogen Mitigation Mixing Pump (HMMP) in Tank 241-SY-101 will need to be removed at some point. At that time, the HMMP will be placed in a shipping container and transferred to a designated onsite location depending on waste classification. This report shows how the radioactive material content of shipping container will be determined. Once the radioactive material loading is known, the waste classification of the container may be determined in accordance with established procedures.
Date: May 19, 1995
Creator: Gedeon, S.R.
Object Type: Report
System: The UNT Digital Library
Computer modeling of electrical performance of detonators (open access)

Computer modeling of electrical performance of detonators

An empirical model of detonator electrical performance which describes the resistance of the exploding bridgewire (EBW) or exploding foil initiator (EFI or slapper) as a function of energy, deposition will be described. This model features many parameters that can be adjusted to obtain a close fit to experimental data. This has been demonstrated using recent experimental data taken with the cable discharge system located at Sandia National Laboratories. This paper will be a continuation of the paper entitled ``Cable Discharge System for Fundamental Detonator Studies`` presented at the 2nd NASA/DOD/DOE Pyrotechnic Workshop.
Date: May 1, 1995
Creator: Furnberg, C.M.; Peevy, G.R.; Brigham, W.P. & Lyons, G.R.
Object Type: Article
System: The UNT Digital Library
Hydrogen program combustion research: Three dimensional computational modeling (open access)

Hydrogen program combustion research: Three dimensional computational modeling

We have significantly increased our computational modeling capability by the addition of a vertical valve model in KIVA-3, code used internationally for engine design. In this report the implementation and application of the valve model is described. The model is shown to reproduce the experimentally verified intake flow problem examined by Hessel. Furthermore, the sensitivity and performance of the model is examined for the geometry and conditions of the hydrogen-fueled Onan engine in development at Sandia National Laboratory. Overall the valve model is shown to have comparable accuracy as the general flow simulation capability in KIVA-3, which has been well validated by past comparisons to experiments. In the exploratory simulations of the Onan engine, the standard use of the single kinetic reaction for hydrogen oxidation was found to be inadequate for modeling the hydrogen combustion because of its inability to describe both the observed laminar flame speed and the absence of autoignition in the Onan engine. We propose a temporary solution that inhibits the autoignition without sacrificing the ability to model spark ignition. In the absence of experimental data on the Onan engine, a computational investigation was undertaken to evaluate the importance of modeling the intake flow on the combustion …
Date: May 1, 1995
Creator: Johnson, N. L.; Amsden, A. A. & Butler, T. D.
Object Type: Article
System: The UNT Digital Library
Quench antennas for RHIC quadrupole magnets (open access)

Quench antennas for RHIC quadrupole magnets

Quench antennas for RHIC quadrupole magnets are being developed jointly by KEK and BNL. A quench antenna is a device to localize a quench origin using arrays of pick-up coils lined up along the magnet bore. Each array contains four pick-up coils: sensitive to normal sextupole, skew sextupole, normal octupole, and skew octupole field. This array configuration allows an azimuthal localization of a quench front while a series of arrays gives an axial localization and a quench propagation velocity. Several antennas have been developed for RHIC magnets and they are now routinely used for quench tests of production magnets. The paper discusses the description of the method and introduces a measured example using an antenna designed for quadrupole magnets.
Date: May 1, 1995
Creator: Ogitsu, T.; Terashima, A.; Tsuchiya, K.; Ganetis, G.; Muratore, J. & Wanderer, P.
Object Type: Article
System: The UNT Digital Library
A one piece wall box for space electronics (open access)

A one piece wall box for space electronics

In extraterrestrial applications, satellite payloads have printed circuit modules that are housed in boxes or chassis. The box may be a one piece wall or a segmented wall. These two wall options are compared for function and cost.
Date: May 1, 1995
Creator: Greenwood, W.H.
Object Type: Report
System: The UNT Digital Library
Flat panel planar optic display. Revision 4/95 (open access)

Flat panel planar optic display. Revision 4/95

A prototype 10 inch flat panel Planar Optic display, (POD), screen has been constructed and tested. This display screen is comprised of hundreds of planar optic glass sheets bonded together with a cladding layer between each sheet where each glass sheet represents a vertical line of resolution. The display is 9 inches wide by 5 inches high and approximately 1 inch thick. A 3 milliwatt HeNe laser is used as the illumination source and a vector scanning technique is employed.
Date: May 1, 1995
Creator: Veligdan, J.T.
Object Type: Article
System: The UNT Digital Library
Test plan/procedure for the shock limiting device of the radioisotope thermoelectric generator package mounting subsystem 145. Revision 1 (open access)

Test plan/procedure for the shock limiting device of the radioisotope thermoelectric generator package mounting subsystem 145. Revision 1

This document defines the procedure to be used in the 18 inch drop test to be used for design verification of the RTG Transportation System Package Mounting.
Date: May 25, 1995
Creator: Satoh, J.A.
Object Type: Report
System: The UNT Digital Library
Fullerene-based materials research and development. LDRD final report (open access)

Fullerene-based materials research and development. LDRD final report

The chemistry and physical properties of fullerenes, the third, molecular allotrope of carbon, have been studied using both experimental and computational techniques. Early computational work investigated the stability of fullerene isomers and oxides, which was followed by extensive work on hydrogenated fullerenes. Our work led to the first synthesis of a polymer containing C{sub 60} and the synthesis of the simplest hydrocarbon derivatives of C{sub 60} and C{sub 70}. The excellent agreement between theory and experiment ({plus_minus} 0.1 kcal/mol in the relative stability of isomers) has provided insight into the chemical nature of fullerenes and has yielded a sound basis for prediction of the structure of derivatized fullerenes. Such derivatives are the key to the preparation of fullerene-based materials.
Date: May 1, 1995
Creator: Cahill, P. A.; Henderson, C. C.; Rohlfing, C. M.; Loy, D. A.; Assink, R. A.; Gillen, K. T. et al.
Object Type: Report
System: The UNT Digital Library
Hanford coring bit temperature monitor development testing results report (open access)

Hanford coring bit temperature monitor development testing results report

Instrumentation which directly monitors the temperature of a coring bit used to retrieve core samples of high level nuclear waste stored in tanks at Hanford was developed at Sandia National Laboratories. Monitoring the temperature of the coring bit is desired to enhance the safety of the coring operations. A unique application of mature technologies was used to accomplish the measurement. This report documents the results of development testing performed at Sandia to assure the instrumentation will withstand the severe environments present in the waste tanks.
Date: May 1995
Creator: Rey, D.
Object Type: Report
System: The UNT Digital Library
Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Technical progress report, January 1, 1995--March 31, 1995 (open access)

Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Technical progress report, January 1, 1995--March 31, 1995

The objective of this project is to develop a comprehensive, interdisciplinary, and quantitative characterization of a fluvial-deltaic reservoir which will allow realistic inter-well and reservoir-scale modeling to be developed for improved oil-field development in similar reservoirs world-wide. The geological and petrophysical properties of the Cretaceous Ferron Sandstone in east-central Utah will be quantitatively determined. Both new and existing data will be integrated into a three-dimensional representation of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Transfer of the project results to the petroleum industry is an integral component of the project.
Date: May 2, 1995
Creator: Allison, M. L.
Object Type: Report
System: The UNT Digital Library
Alignment and survey of the elements in RHIC (open access)

Alignment and survey of the elements in RHIC

The Relativistic Heavy Ion Collider (RHIC) consists of two rings with cryogenic magnets at a 4.5K operating temperature. Control of positions of the dipole and quadrupole cold masses (iron laminations) and the beam position monitors (BPM`s) during production and installation is presented. The roll of the dipoles is controlled by a combination of rotating coil measurements with the surveying measurements. The center of the quadrupole magnetic field is obtained by direct measurement of the field shape within a colloidal cell placed inside the quadrupoles. Special attention is given to the triplet quadrupole alignment and determination of the field center position.
Date: May 1, 1995
Creator: Trbojevic, D.; Cameron, P. & Ganetis, G. L.
Object Type: Article
System: The UNT Digital Library
Modeling the dynamic crush of impact mitigating materials (open access)

Modeling the dynamic crush of impact mitigating materials

Crushable materials are commonly utilized in the design of structural components to absorb energy and mitigate shock during the dynamic impact of a complex structure, such as an automobile chassis or drum-type shipping container. The development and application of several finite-element material models which have been developed at various times at LLNL for DYNA3D will be discussed. Between the models, they are able to account for several of the predominant mechanisms which typically influence the dynamic mechanical behavior of crushable materials. One issue we addressed was that no single existing model would account for the entire gambit of constitutive features which are important for crushable materials. Thus, we describe the implementation and use of an additional material model which attempts to provide a more comprehensive model of the mechanics of crushable material behavior. This model combines features of the pre-existing DYNA models and incorporates some new features as well in an invariant large-strain formulation. In addition to examining the behavior of a unit cell in uniaxial compression, two cases were chosen to evaluate the capabilities and accuracy of the various material models in DYNA. In the first case, a model for foam filled box beams was developed and compared to …
Date: May 12, 1995
Creator: Logan, R.W. & McMichael, L.D.
Object Type: Article
System: The UNT Digital Library
A diethyl phosphonate containing oxazoline: Synthesis and characterization of monomer and homopolymer (open access)

A diethyl phosphonate containing oxazoline: Synthesis and characterization of monomer and homopolymer

A diethyl phosphonate oxazoline monomer and its polymer have been synthesized. The monomer appears to polymerize via a ring-opening mechanism giving the expected polyethyleneimine backbone with pendant carbonyl groups. Two distinct molecular weights were produced during polymerization suggesting two mechanisms of chain growth. Studies are underway to elucidate the reasons for this. This polymer has potential as a metal-chelating agent.
Date: May 1, 1995
Creator: Hermes, R.E.; Thompson, R.D. & Valdez, L.S.
Object Type: Article
System: The UNT Digital Library
Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994 (open access)

Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994

Yucca Mountain, Nevada, is being investigated as a potential site for a high-level radioactive waste repository. This report summarizes the lithologic logging of new and existing boreholes at Yucca Mountain that was done from August 1993 to February 1994 by the Rock Characteristics Section, Yucca Mountain Project Branch, US Geological Survey (USGS). Units encountered during logging include Quaternary-Tertiary alluvium/colluvium, Tertiary Rainier Mesa Tuff, all units in the Tertiary Paintbrush Group, Tertiary Calico Hills Formation and Tertiary Prow Pass Tuff. We present criteria used for recognition of stratigraphic contacts, logging results as tables of contact depths for core from neutron (UZN) boreholes and graphical lithologic logs for core from non-UZN boreholes, and descriptions of several distinctive nonwelded tuffs recognized in the PTn hydrogeologic unit of the Paintbrush Group.
Date: May 1, 1995
Creator: Geslin, J.K.; Moyer, T.C. & Buesch, D.C.
Object Type: Report
System: The UNT Digital Library
Recent progress on beam stability study in the PSR (open access)

Recent progress on beam stability study in the PSR

A fast transverse instability has been observed in the Los Alamos Proton Storage Ring (PSR) when the injected beam intensity reaches more than 2 {times} 10{sup 13} protons per pulse. Understanding the cause and control of this instability has taken on new importance as the neutron-scattering community considers the next generation of accelerator-driven spallation-neutron sources, which call for peak-proton intensities of 10{sup 14} per pulse or higher. Previous observations and theoretical studies indicate that the instability in the PSR is most likely driven by electrons trapped within the proton beam. Recent studies using an experimental electron-clearing system and voltage-biased pinger-electrodes for electron clearing and collection support this hypothesis. Experiments have also been performed to study the instability threshold when varying the electron production rate. Theoretical studies include a computer simulation of a simplified model for the e -- p instability and the investigation of possible electron confinement in the ring-element magnetic fields. This paper reports some recent results from these studies.
Date: May 1, 1995
Creator: Wang, T.; Channell, P. & Cooper, R.
Object Type: Article
System: The UNT Digital Library
Photon and diphoton production at CDF and D0 (open access)

Photon and diphoton production at CDF and D0

Measurements of prompt photon production in {anti p}p collisions at {radical}s = 1.8 TeV from the CDF and D0 experiments at Fermilab are presented. The measured inclusive isolated photon spectrum at CDF and D0 are used to test current parton distribution functions and NLO QCD predictions. No new resonance is found in the photon + jet mass spectrum from D0 which is consistent with NLO QCD predictions. The pseudorapidity distribution of the leading jet in photon events at CDF is used to constrain the parton distribution sets while the angular distribution is found to be better explained by a larger Bremsstrahlung contribution. The soft diphoton spectrum is compared to NLO QCD predictions. The diphoton system P{sub T} is found to agree better with the LO shower monte-carlo prediction of Pythia than NLO QCD. Finally, the {gamma} + charm cross section is measured and compared to the LO Pythia prediction.
Date: May 1, 1995
Creator: Lamoureux, J. I. & Collaboration, D0
Object Type: Report
System: The UNT Digital Library
Cancer and birth defects surveillance system for communities around the Savannah River Site. Phase 1, Technical progress report: Cancer (open access)

Cancer and birth defects surveillance system for communities around the Savannah River Site. Phase 1, Technical progress report: Cancer

Year 04 began the second three-year grant period, the overall goals of which were to consolidate and continue the aims of the first period, with the important exception that a great deal more effort would be expended on promoting community awareness and knowledge, as these characteristics relate to the residents` perceptions of major potential health effects. It was anticipated that more time would be available during the second period to accomplish this aim because the difficult early work of gaining hospital and community acceptance would have been done. Specifically, the goals were to: Maintain and refine the cancer registry; Inaugurate the birth defects registry if it were funded; and Enhance community involvement and education.
Date: May 1, 1995
Creator: Dunbar, J.B.
Object Type: Report
System: The UNT Digital Library
The state-of-the-art port of entry workshop (open access)

The state-of-the-art port of entry workshop

The increased demand for freight movements through international ports of entry and the signing of the North American Free Trade Agreement (NAFTA) have increased freight traffic at border ports of entry. The State-of-the-Art Port of Entry Workshop initiated a dialogue among technologists and stakeholders to explore the potential uses of technology at border crossings and to set development priorities. International ports of entry are both information and labor intensive, and there are many promising technologies that could be used to provide timely information and optimize inspection resources. Participants universally held that integration of technologies and operations is critical to improving port services. A series of Next Steps was developed to address stakeholder issues and national priorities, such as the National Transportation Policy and National Drug Policy. This report documents the views of the various stakeholders and technologists present at the workshop and outlines future directions of study.
Date: May 1, 1995
Creator: Godfrey, B.
Object Type: Article
System: The UNT Digital Library
Cost benefit and risk assessment for selected tank waste process testing alternatives (open access)

Cost benefit and risk assessment for selected tank waste process testing alternatives

The US Department of Energy has established the Tank Waste Remediation System (TWRS) program to safely manage wastes currently stored in underground tank at the Hanford Site. A TWRS testing and development strategy was recently developed to define long-range TWRS testing plans. The testing and development strategy considered four alternatives. The primary variable in the alternatives is the level of pilot-scale testing involving actual waste. This study evaluates the cost benefit and risks associated with the four alternatives. Four types of risk were evaluated: programmatic schedule risk, process mishap risk, worker risk, and public health risk. The structure of this report is as follows: Section 1 introduces the report subject; Section 2 describes the test strategy alternative evaluation; Section 3 describes the approach used in this study to assess risk and cost benefit; Section 4 describes the assessment methodologies for costs and risks; Section 5 describes the bases and assumptions used to estimate the costs and risks; Section 6 presents the detailed costs and risks; and Section 7 describes the results of the cost benefit analysis and presents conclusions.
Date: May 22, 1995
Creator: Gasper, K. A.
Object Type: Report
System: The UNT Digital Library
Compact X-band high power load using magnetic stainless steel (open access)

Compact X-band high power load using magnetic stainless steel

We present design and experimental results of a high power X-band load. The load is formed as a disk-loaded waveguide structure using lossy, Type 430 stainless steel. The design parameters have been optimized using the recently developed mode-matching code MLEGO. The load has been designed for compactness while maintaining a band width greater than 300 MHz.
Date: May 1, 1995
Creator: Tantawi, S. G. & Vlieks, A. E.
Object Type: Article
System: The UNT Digital Library
Tank 241-SX-106 vapor sampling and analysis tank characterization report (open access)

Tank 241-SX-106 vapor sampling and analysis tank characterization report

This report presents the details of the Hanford waste tank characterization study for tank 241-SX-106. The drivers and objectives of the headspace vapor sampling and analysis were in accordance with procedure that were presented in other reports. The vapor and headspace gas samples were collected and analyzed to determine the potential risks to tank farm workers due to fugitive emissions from the tank.
Date: May 31, 1995
Creator: Huckaby, J. L.
Object Type: Report
System: The UNT Digital Library