States

Experimental and theoretical particle physics. Final report (open access)

Experimental and theoretical particle physics. Final report

A brief sketch of the accomplishments made in the past year is given for the following: {epsilon} expansion analysis of weak first-order transitions in the cubic anisotropy model; the non-Abelian Debye screening length beyond leading order; electric-magnetic duality and the heavy quark potential; ice water vapor interface; groups in cold dark matter simulations; Compton scattering on black body photons; nuclear reaction rates in a plasma; comparison of jets from electron-positron interactions and hadronic collisions; the energy-energy correlation in perturbation theory; CPT violation search in the kaon system; regularization of chiral gauge theories; dynamical supersymmetry breaking; electroweak baryogenesis; quenched chiral perturbation theory for heavy-light mesons; testing the chiral behavior of the hadron spectrum; hadron spectrum with Wilson fermions; quenched chiral perturbation theory for baryons; matrix elements of 4-fermion operators with quenched Wilson fermions; classical preheating and decoherence; reheating and thermalization in a simple scalar model; and from quantum field theory to hydrodynamics: transport coefficients and effective kinetic theory.
Date: July 9, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Advanced turbine systems program: Conceptual design and product development. Quarterly report, November 1, 1995--January 31, 1996 (open access)

Advanced turbine systems program: Conceptual design and product development. Quarterly report, November 1, 1995--January 31, 1996

Several tasks were completed. Design and test of critical components are discussed. Plans for the next reporting period are outlined.
Date: April 9, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Proof-of-concept tests of the magnetohydrodynamic steam-bottoming system at the DOE Coal-Fired Flow Facility. Final report (open access)

Proof-of-concept tests of the magnetohydrodynamic steam-bottoming system at the DOE Coal-Fired Flow Facility. Final report

The development of coal-fired magnetohydrodynamic (MHD) power can be viewed as consisting of two parts; the topping cycle and the bottoming cycle. The topping cycle consists of the coal combustor, MHD generator and associated components. The bottoming cycle consists of the heat recovery, steam generation, seed recovery/regeneration, emissions control (gas and particulate), ash handling and deposition, and materials evaluation. The report concentrates on the bottoming cycle, for which much of the technology was developed at the University of Tennessee Space Institute (UTSI). Because of the complexity of the required technology, a number of issues required investigation. Of specific concern regarding the bottoming cycle, was the design of the steam cycle components and emissions control. First, the high combustion temperatures and the use of large quantities of potassium in the MHD combustor results in a difference in the composition of the gases entering the bottoming cycle compared to conventional systems. Secondly, a major goal of the UTSI effort was to use a variety of coals in the MHD system, especially the large reserves of high-sulfur coals available in the United States.
Date: October 9, 1996
Creator: Attig, R.C.
Object Type: Report
System: The UNT Digital Library
Safety evaluation for packaging for 1720-DR sodium-filled tank (open access)

Safety evaluation for packaging for 1720-DR sodium-filled tank

Preparations are under way to sell the sodium stored in the 1720-DR tank in the 1720-DR building. This will require that the tank, as well as the 1720-DR facility, be moved to the 300 Area, so that the sodium may be melted and transferred into a railroad tanker car. Because the sodium is a hazardous material and is being shipped in a nonspecification packaging, a safety evaluation for packaging (SEP) is required. This SEP approves the sodium-filled tank for a single shipment from the 105-DR area to the 300 Area.
Date: March 9, 1996
Creator: Mercado, M. S.
Object Type: Report
System: The UNT Digital Library
Shared memory vs. message passing: The COMOPS benchmark experiment (open access)

Shared memory vs. message passing: The COMOPS benchmark experiment

This paper presents the comparison of the COMOPS benchmark performance in MPI and shared memory on three different shared memory platforms: the DEC AlphaServer 8400/300, the SGI Power Challenge, and the HP-Convex Exemplar SPP1600. The paper also qualitatively analyzes the obtained performance data based on an understanding of the corresponding architecture and the MPI implementations. Some conclusions are made for the inter-processor communication performance on these three shared memory platforms.
Date: December 9, 1996
Creator: Luo, Yong
Object Type: Article
System: The UNT Digital Library
VDTT removal system functional design criteria (open access)

VDTT removal system functional design criteria

Two Velocity Density Temperature Trees (H-2-815016) are to be removed from risers 14A and 1B of tank 241-SY-101. This document provides functional design criteria for the removal system. The removal system consists of a Liquid Removal Tool, Flexible Receiver (H-2-79216), Burial Container, Transport Trailers, and associated equipment.
Date: February 9, 1996
Creator: Legare, D.E.
Object Type: Report
System: The UNT Digital Library
National Ignition Facility frequency converter development (open access)

National Ignition Facility frequency converter development

A preliminary error budget for the third harmonic converter for the National Ignition Facility (NIF) laser driver has been developed using a root-sum-square-accumulation of error sources. Such a budget sets an upper bound on the allowable magnitude of the various effects that reduce conversion efficiency. Development efforts on crystal mounting technology and crystal quality studies are discussed.
Date: December 9, 1996
Creator: Barker, C.E.; Auerbach, J.M. & Adams, C.H.
Object Type: Article
System: The UNT Digital Library
System design description for sampling fuel in K basins (open access)

System design description for sampling fuel in K basins

This System Design Description provides: (1) statements of the Spent Nuclear Fuel Projects (SNFP) needs requiring sampling of fuel in the K East and K West Basins, (2) the sampling equipment functions and requirements, (3) a general work plan and the design logic being followed to develop the equipment, and (4) a summary description of the design for the sampling equipment. The report summarizes the integrated application of both the subject equipment and the canister sludge sampler in near-term characterization campaigns at K Basins.
Date: February 9, 1996
Creator: Baker, R.B.
Object Type: Report
System: The UNT Digital Library
Beyond the Brillouin limit with the Penning fusion experiment (open access)

Beyond the Brillouin limit with the Penning fusion experiment

Several years ago, it was proposed that a dense nonneutral plasma could be produced in a Penning trap. Nonneutral plasmas have excellent confinement. Thus, such a dense plasma might produce simultaneously high density and good confinement (as needed for fusion). Recently, this theoretical conjecture has been demonstrated in a small (3 mm radius) electron experiment (PFX). Densities up to 35 times the Brillouin density (limiting number density in a static trap) have been inferred from the observed strong (100:1) spherical focussing. Electrons are injected at low energy from a single pole of the sphere. A surprising observation is the self-organization of the system into a spherical state, which occurs precisely when the trap parameters are adjusted to produce a spherical well. This organization is observed by a bootstrapping which produces a hysteresis. Additional observations which confirm the dense spherical focus are energy-scattered electrons and deflections of an electron probe beam by the space charge of the central focus.
Date: November 9, 1996
Creator: Barnes, D. C.; Mitchell, T. B. & Schauer, M. M.
Object Type: Article
System: The UNT Digital Library
Development of long-lifetime, low-contamination beam dumps for NIF (open access)

Development of long-lifetime, low-contamination beam dumps for NIF

The laser architecture of the NIF beamlines requires small-area beam dumps to safely absorb back reflections from the output and leakage through the PEPC switch. The problems presented by these beam dumps are that fluences they must absorb are very large, beyond the damage threshold of any material, and ablation of beam dump materials potentially contaminates adjacent optical components. Full scale tests have demonstrated that a stainless steel beam dump will survive fluence levels and energies as high as 820 j/CM{sup 2} and 2.5 kJ, respectively. Small scale tests with tungsten, tantalum, and stainless steel have demonstrated erosion rates less than about 0.5 {mu}m/shot, with stainless steel having the smallest rate. They also suggest that increased angles of incidence ({ge}60{degree}) will greatly reduce the material ablated directly back along the beam path.
Date: December 9, 1996
Creator: Norton, M. A.; Murray, J. E.; Boley, C. D.; Milam, D.; Sell, W. D.; Feit, M. D. et al.
Object Type: Article
System: The UNT Digital Library
Tank characterization report for single-shell tank 241-BY-108 (open access)

Tank characterization report for single-shell tank 241-BY-108

This report summarizes information on the historical uses, current status, and sampling and analysis results of waste stored in single-shell underground tank 241-BY-108.
Date: February 9, 1996
Creator: Baldwin, J.H.
Object Type: Report
System: The UNT Digital Library
Review of mineral estate of the United States at Naval Petroleum Reserve No. 2, Buena Vista Hills Field, Kern County, California (open access)

Review of mineral estate of the United States at Naval Petroleum Reserve No. 2, Buena Vista Hills Field, Kern County, California

The purpose of this report is to present this Consultant`s findings regarding the nature and extent of the mineral estate of the United States at National Petroleum Reserve No. 2 (NPR-2), Buena Vista Hills Field, Kern County, California. Determination of the mineral estate is a necessary prerequisite to this Consultant`s calculation of estimated future cash flows attributable to said estate, which calculations are presented in the accompanying report entitled ``Phase II Final Report, Study of Alternatives for Future Operations of the Naval Petroleum and Oil Shale Reserves, NPR-2, California.`` This Report contains a discussion of the leases in effect at NPR-2 and subsequent contracts affecting such leases. This Report also summarizes discrepancies found between the current royalty calculation procedures utilized at NPR-2 and those procedures required under applicable agreements and regulations. Recommendations for maximizing the government`s income stream at NPR-2 are discussed in the concluding section of this Report.
Date: August 9, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
National Ignition Facility system design requirements conventional facilities SDR001 (open access)

National Ignition Facility system design requirements conventional facilities SDR001

This System Design Requirements (SDR) document specifies the functions to be performed and the minimum design requirements for the National Ignition Facility (NIF) site infrastructure and conventional facilities. These consist of the physical site and buildings necessary to house the laser, target chamber, target preparation areas, optics support and ancillary functions.
Date: April 9, 1996
Creator: Hands, J.
Object Type: Report
System: The UNT Digital Library
Utility Advanced Turbine Systems (ATS) technology readiness testing and pre-commercialization demonstration. Quarterly report, April 1--June 30, 1996 (open access)

Utility Advanced Turbine Systems (ATS) technology readiness testing and pre-commercialization demonstration. Quarterly report, April 1--June 30, 1996

This report covers the period April--June, 1996 for the utility advanced turbine systems (ATS) technical readiness testing and pre-commercial demonstration program. The topics of the report include NEPA information, ATS engine design, integrated program plan, closed loop cooling, thin wall casting development, rotor air sealing development, compressor aerodynamic development, turbine aerodynamic development, phase 3 advanced air sealing development, active tip clearance control, combustion system development, ceramic ring segment, advanced thermal barrier coating development, steam cooling effects, directionally solidified blade development, single crystal blade development program, advanced vane alloy development, blade and vane life prediction, nickel based alloy rotor, and plans for the next reporting period.
Date: September 9, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Particulate Hot Gas Stream Cleanup Technical Issues: Quarterly report, July 1-September 30, 1996 (open access)

Particulate Hot Gas Stream Cleanup Technical Issues: Quarterly report, July 1-September 30, 1996

This is the eighth in a series of quarterly reports describing the activities performed under Contract No. DE-AC21-94MC31160. Analyses of Hot Gas Stream Cleanup (HGCU) ashes and descriptions of filter performance address aspects of filter operation that are apparently linked to the characteristics of the collected ash or the performance of the ceramic barrier filter elements. Task 1 is designed to generate a data base of the key characteristics of ashes collected from operating advanced particle filters (APFS) and to relate these ash properties to the operation and performance of these filters. Task 2 concerns testing and failure analysis of ceramic filter elements. Under Task I during the past quarter, additional analyses were performed on ashes from the Ahlstrom 10 MWt Pressurized Fluidized Circulating Fluid Bed (PCFB) facility located at Karhula, Finland. Work continued on the HGCU data base being constructed in Microsoft Access. A variety of information has been entered into the data base, including numerical values, short or long text entries, and photographs. Detailed design of a bench top device for high temperature measurement of ash permeability has also begun. In addition to these activities, a paper was prepared and a poster was presented summarizing recent work performed …
Date: December 9, 1996
Creator: Pontius, D.H.
Object Type: Report
System: The UNT Digital Library
Tank 241-TX-105 tank characterization plan (open access)

Tank 241-TX-105 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-TX-105.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-AX-104 tank characterization plan (open access)

Tank 241-AX-104 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-AX-104.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-AN-104 tank characterization plan (open access)

Tank 241-AN-104 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of double-shell tank 241-AN-104.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-U-106 tank characterization plan (open access)

Tank 241-U-106 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-U-106.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-S-110 tank characterization plan (open access)

Tank 241-S-110 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-S-110.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-AN-103 tank characterization plan (open access)

Tank 241-AN-103 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of double-shell tank 241-AN-103.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-S-112 tank characterization plan. Revision 1 (open access)

Tank 241-S-112 tank characterization plan. Revision 1

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-S-112.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
Tank 241-TX-111 tank characterization plan (open access)

Tank 241-TX-111 tank characterization plan

This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-TX-111.
Date: May 9, 1996
Creator: Homi, C. S.
Object Type: Report
System: The UNT Digital Library
TWRS systems engineering software configuration management plan (open access)

TWRS systems engineering software configuration management plan

This plan delineates the requirements for control of software developed and supported by the Tank Waste Remediation System (TWRS) Technical Integration organization. The information contained in this plan shall assist employees involved with software modification and configuration control.
Date: October 9, 1996
Creator: Porter, P.E.
Object Type: Report
System: The UNT Digital Library