States

System modeling for the longitudinal beam dynamics control problem in heavy ion induction accelerators (open access)

System modeling for the longitudinal beam dynamics control problem in heavy ion induction accelerators

We address the problem of developing system models that are suitable for studying the control of the longitudinal beam dynamics in induction accelerators for heavy ions. In particular, we present the preliminary results of our efforts to devise a general framework for building detailed, integrated models of accelerator systems consisting of pulsed power modular circuits, induction cells, beam dynamics, and control system elements. Such a framework will permit us to analyze and design the pulsed power modulators and the control systems required to effect precise control over the longitudinal beam dynamics.
Date: May 17, 1993
Creator: Payne, A. N.
Object Type: Article
System: The UNT Digital Library
Inspection of management of excess personal property at Rocky Flats (open access)

Inspection of management of excess personal property at Rocky Flats

Inspection revealed that immediate management attention is needed to properly control, store, and dispose of excess personal property at Rocky Flats. Current system of operation does not allow for efficient, timely, cost effective management; current storage and disposal practices are not consistent with contract requirements or DOE policies and procedures. Other deficiencies are pointed out. Results of inspection are divided into 4 sections: contract changeover issues, moratorium issues, additional excess property issues, and award fee observations. Recommendations are outlined.
Date: May 17, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Parallel mathematical software. Annual report, September 15, 1991--August 31, 1993 (open access)

Parallel mathematical software. Annual report, September 15, 1991--August 31, 1993

This report discusses parallel software for nonlinear systems of equations.
Date: May 17, 1993
Creator: Watson, L. T. & Ribbens, C. J.
Object Type: Report
System: The UNT Digital Library
Development and testing of industrial scale, coal fired combustion system, Phase 3. Fifth quarterly technical progress report, January 1, 1993--March 31, 1993 (open access)

Development and testing of industrial scale, coal fired combustion system, Phase 3. Fifth quarterly technical progress report, January 1, 1993--March 31, 1993

In the present reporting period, the first quarter of calendar year 1993, the effort was divided between Task 2. ``Pre Systems Tests`` and Task 4 ``Economics and Commercialization Plan.`` A major part of the task 2 effort was devoted converting the nozzle from adiabatic to air cooted operation. This conversion will allow immediate implementation of the longer duration task 3.2 tests after the completion of the task 2 tests. Therefore, a significant pan of the exit nozzle conversion effort is also part of task 3.1, ``Combustor Refurbishment.`` In task 1 the only activity remaining is to receive the results of the BYU combustion modeling. The results are anticipated this Spring. One of the three remaining tests in task 2 was implemented in late January under freezing weather and snow conditions. Ice plugged the coal feed lines and stack scrubber water outlet and ice jammed and damaged the coal metering auger. While these lines were thawed, the combustor was fired with oil. The coal used in this test contained fine fibrous tramp material which passed through the two tramp material retaining screens and eventually plugged several of the coal feed lines to the combustor. This cut the planned coal feed rate …
Date: May 17, 1993
Creator: Zauderer, B.
Object Type: Report
System: The UNT Digital Library
Energy Transformation in Molecular Electronic Systems (open access)

Energy Transformation in Molecular Electronic Systems

This laboratory has developed many new ideas and methods in the electronic spectroscopy of molecules. This report covers the contract period 1993-1995. A number of the projects were completed in 1996, and those papers are included in the report. The DOE contract was terminated at the end of 1995 owing to a reorganizational change eliminating nationally the projects under the Office of Health and Environmental Research, U. S. Department of Energy.
Date: May 17, 1999
Creator: Kasha, Michael
Object Type: Report
System: The UNT Digital Library
AutoCAD discipline layering convention. Revision 1 (open access)

AutoCAD discipline layering convention. Revision 1

This document is a user`s guide to establishing layering standards for drawing development. Uniform layering standards are established to exchange of AutoCAD datasets between organizations and companies. Consistency in the layering conventions assists the user through logical separation and identification of drawing data. This allows the user to view and plot related aspects of a drawing separately or in combination. The use of color and Linetype by layer is the preferred layering convention method, however to accommodate specific needs, colors and linetypes can also be assigned on an entity basis. New drawing setup files (also identified in AutoCAD documentation as Prototype drawings) use this layering convention to establish discipline drawing layers that are routinely used. Additions, deletions or revisions to the layering conventions are encourage.
Date: May 17, 1995
Creator: Nielsen, B. L.
Object Type: Report
System: The UNT Digital Library
Observation of top quark production using kinematic techniques (open access)

Observation of top quark production using kinematic techniques

We present analysis results of the top quark production using kinematic techniques in p{bar p} collisions at {radical}s = 1.8 TeV with the Collider Detector at Fermilab (CDF). We analyzed a data sample corresponding to an integrated luminosity of 67 pb{sup {minus}1}. First, we compare the kinematic properties, the second and third leading jet E{sub T} of W+ > 3 jet events with expectations for t{bar t} production and its back-ground processes, predominantly direct W + jet production. The probability that backgrounds fake the excess in the signal region was found to be less than 0.26%. Next, we use a scaler sum of the transverse energies of the lepton, neutrino and jets in W+{ge}4 jet events. This analysis shows t{bar t} events exist significantly in the event sample, and enables us to estimate the top quark mass to be M{sub top} = 180 {plus_minus} 12 {sub {minus}15}{sup +19} GeV/c{sup 2}. Finally, we analyse the dijet invariant mass in the W+{ge}4 jet events. It shows a significant mass peak consistent with a mass peak of W decaying into dijet. From these results and counting experiment, we have confirmed previous evidence reported in 1994 April and observed top quark production.
Date: May 17, 1995
Creator: Kim, Shinhong
Object Type: Article
System: The UNT Digital Library
Magnet coil electrical gaskets of high compliance and ampacity (open access)

Magnet coil electrical gaskets of high compliance and ampacity

Coils employed in the magnets of the PHENIX Detector, presently under construction for RHIC (Relativistic Heavy Ion Collider) at the Brookhaven National Laboratory, are massive (weight {approximately} 8000 kG each). For that reason we subdivided them into a series of manageable subcoils that we will subsequent bolt together. Electrical terminals attached to the subcoils conductors are rigidly embedded and precisely located during vacuum impregnation. However; we anticipate some misalignment and nonuniform gaping to occur between terminals at assembly. We have elected to use electrical gaskets of compliance and ampacity between the bolted terminals to enhance the current carrying capability of the electrical joints. This paper describes the material candidates selected, the tests performed, and the relative ranking of the materials tested.
Date: May 17, 1995
Creator: Harvey, A.R. & Yamamoto, R.M.
Object Type: Article
System: The UNT Digital Library
Lessons learned from applying VIM to fast reactor critical experiments (open access)

Lessons learned from applying VIM to fast reactor critical experiments

VIM is a continuous energy Monte Carlo code first developed around 1970 for the analysis of plate-type, fast-neutron, zero-power critical assemblies. In most respects, VIM is functionally equivalent to the MCNP code but it has two features that make uniquely suited to the analysis of fast reactor critical experiments: (1) the plate lattice geometry option, which allows efficient description of and neutron tracking in the assembly geometry, and (2) a statistical treatment of neutron cross section data in the unresolved resonance range. Since its inception, VIM`s capabilities have expanded to include numerous features, such as thermal neutron cross sections, photon cross sections, and combinatorial and other geometry options, that have allowed its use in a wide range of neutral-particle transport problems. The earliest validation work at Argonne National Laboratory (ANL) focused on the validation of VIM itself. This work showed that, in order for VIM to be a ``rigorous`` tool, extreme detail in the pointwise Monte Carlo libraries was needed, and the required detail was added. The emphasis soon shifted to validating models, methods, data and codes against VIM. Most of this work was done in the context of analyzing critical experiments in zero power reactor (ZPR) assemblies. The purpose …
Date: May 17, 1995
Creator: Schaefer, R.W.; McKnight, R.D. & Collins, P.J.
Object Type: Article
System: The UNT Digital Library
45-day safety screen results for tank 241-U-204, push mode, cores 81 and 82 (open access)

45-day safety screen results for tank 241-U-204, push mode, cores 81 and 82

This is the 45-Day report for the fiscal year 1995 tank 241-U-204 (U-204) push-mode characterization effort. Included are a summary of analytical results and copies of the differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) scans. Core samples 81 and 82 from tank U-204, obtained by the push-mode core sampling method, were received by the 222-S Laboratories. Each core consisted of only one segment. Both core samples and the field blank were extruded, subsampled, and analyzed in accordance with Reference 1. Drainable liquids and the field blank were analyzed at the segment level for energetics by DSC, percent water by TGA, and total organic carbon (TOC) by furnace oxidation. In addition, the presence or absence of any separable, presumably organic, layer in drainable liquid samples was noted and none was observed. The solids were analyzed directly at the half segment level for energetics by DSC, percent water by TGA, and TOC by persulfate oxidation. Total alpha activity was determined on fusion digestions of the sludge subsamples. No immediate notifications were necessary on samples from cores 81 or 82.
Date: May 17, 1995
Creator: Bell, Kevin E.
Object Type: Report
System: The UNT Digital Library
Hanford Well Remediation and Decommissioning Plan (open access)

Hanford Well Remediation and Decommissioning Plan

This plan provides the requirements for conducting well remediation and decommissioning activities.
Date: May 17, 1996
Creator: Skoglie, D. E.
Object Type: Report
System: The UNT Digital Library
Manufactured Homes Simulated Thermal Analysis and Cost Effectiveness Report. (open access)

Manufactured Homes Simulated Thermal Analysis and Cost Effectiveness Report.

In 1988 and 1989, 150 manufactured homes were built to comply with Super Good Cents (SGC) specifications adapted from the existing specifications for site-built homes under the Residential Construction Demonstration Project (RCDP). Engineering calculations and computer simulations were used to estimate the effects of the SGC specifications on the thermal performance of the homes. These results were compared with consumer costs to establish the cost-effectiveness of individual measures. Heat loss U-factors for windows, walls, floors and ceilings were established using the standard ASHRAE parallel heat flow method. Adjustments resulted in higher U-factors for ceilings and floors than assumed at the time the homes were approved as meeting the SGC specifications. Except for those homes which included heat pumps, most of the homes did not meet the SGC compliance standards. Nonetheless these homes achieved substantial reductions in overall heat loss rate (UA) compared to UAs estimated for the same homes using the standard insulation packages provided by the manufacturers in the absence of the RCDP program. Homes with conventional electric furnaces showed a 35% reduction in total UA while homes with heat pumps had a 25% reduction. A regression analysis showed no significant relationship between climate zone, manufacturer and UA. A …
Date: May 17, 1990
Creator: Baylon, David
Object Type: Report
System: The UNT Digital Library
Emission from ferroelectric cathodes (open access)

Emission from ferroelectric cathodes

We have recently initiated an investigation of electron emission from ferroelectric cathodes. Our experimental apparatus consisted of an electron diode and a 250 kV, 12 ohm, 70 ns pulsed high voltage power source. A planar triode modulator driven by a synthesized waveform generator initiates the polarization inversion and allows inversion pulse tailoring. The pulsed high voltage power source is capable of delivering two high voltage pulses within 50 ns of each other and is capable of operating at a sustained repetition rate of 5 Hz. Our initial measurements indicate that emission current densities above the Child-Langmuir Space Charge Limit are possible. We explain this effect to be based on a non-zero initial energy of the emitted electrons. We also determined that this effect is strongly coupled to relative timing between the inversion pulse and application of the main anode-cathode pulse. We also have initiated brightness measurements of the emitted beam. As in our previous measurements at this Laboratory, we performed the measurement using a pepper pot technique. Beam-let profiles are recorded with a fast phosphor and gated cameras. We describe our apparatus and preliminary measurements.
Date: May 17, 1993
Creator: Sampayan, S. E.; Caporaso, G. J.; Holmes, C. L.; Lauer, E. J.; Prosnitz, D.; Trimble, D. O. et al.
Object Type: Article
System: The UNT Digital Library
The Savannah River Site`s Groundwater Monitoring Program. Fourth quarter 1992 (open access)

The Savannah River Site`s Groundwater Monitoring Program. Fourth quarter 1992

This report summarizes the Savannah River Site (SRS) groundwater monitoring program conducted by the Environmental Protection Department`s Environmental Monitoring Section (EPD/EMS) during the fourth quarter of 1992. It includes the analytical data, field data, data review, quality control, and other documentation for this program, provides a record of the program`s activities; and serves as an official document of the analytical results.
Date: May 17, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Dairy Provisions of the Enacted 1996 Farm Bill (open access)

Dairy Provisions of the Enacted 1996 Farm Bill

None
Date: May 17, 1996
Creator: Chite, Ralph M.
Object Type: Report
System: The UNT Digital Library
A 600 MeV cyclotron for radioactive beam production (open access)

A 600 MeV cyclotron for radioactive beam production

The magnetic field design for a 600 MeV proton cyclotron is described. The cyclotron has a single stage, a normal conducting magnet coil and a 9.8 m outside yoke diameter. It has 8 sectors, with a transition to 4 sectors in the center region. The magnetic field design was done using 1958 Harwell rectangular ridge system measurements and was compared with recent 3-dimensional field calculations with the program TOSCA at NSCL. The center region 4--8 sector transition focussing was also checked with TOSCA.
Date: May 17, 1993
Creator: Clark, D. J.
Object Type: Article
System: The UNT Digital Library
Surfactant Development for Enhanced Oil Recovery. Second Quarterly Report, January 1, 1994--March 31, 1994 (open access)

Surfactant Development for Enhanced Oil Recovery. Second Quarterly Report, January 1, 1994--March 31, 1994

This report summarizes the activities of this grant during the second reporting period. During this period, several research activities concerning the synthesis and characterization of novel surfactants were performed. Of immediate interest was the investigation of surfactants identified in the first quarterly report, such as cetyltripropylammonium bromide and cetyltributylammonium bromide. These surfactants were of interest because of the low critical micelle concentration they exhibit.
Date: May 17, 1994
Creator: unknown
Object Type: Report
System: The UNT Digital Library
RHIC Combined Element Magnet End Volume Sleeve Evaluation (open access)

RHIC Combined Element Magnet End Volume Sleeve Evaluation

None
Date: May 17, 1995
Creator: Farland, A.; Kane, S. & Mulhall, S.
Object Type: Report
System: The UNT Digital Library
Engineering development of advanced coal-fired low-emission boiler systems. Technical progress report No. 10, January 1995--March 1995 (open access)

Engineering development of advanced coal-fired low-emission boiler systems. Technical progress report No. 10, January 1995--March 1995

The project is on schedule and under budget. The current status is shown in the Milestone Schedule Report included as Appendix A. All Project Plans were updated based on the revised finding level authorized for FY95 and anticipated for FY96. Technology Transfer activities included {open_quotes}supplying{close_quotes} three executives and several team members to the LEBS Workshop, delivering a technical paper at a conference, and working on a Combustion 2000 Session for another conference. ABBES and CeraMem reached agreement concerning Task 7 work, including ownership and disposition of project-purchased equipment to be used during Task 7 and also during Task 11. A test plan was prepared. Task 7 activities for the Low-NO{sub x} Firing System included computational modeling of the firing arrangement. Reasonable comparisons to experimental data previously obtained in the Boiler Simulation Facility were achieved. A kinetic evaluation for both baseline and low NO{sub x} firing arrangements was also performed, with results indicating that the final reducing zone within the main windbox has a dominant effect on NO{sub x} reduction, with higher temperatures being more favorable for lower NO{sub x}. A week of combustion testing was completed in the Fundamental Scale Burner Facility to examine the impact of integrated fuel staging …
Date: May 17, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Lessons learned from applying VIM to fast reactor critical experiments, summary (open access)

Lessons learned from applying VIM to fast reactor critical experiments, summary

VIM is a continuous energy Monte Carlo code first developed around 1970 for the analysis of plate-type, fast-neutron, zero-power critical assemblies. In most respects, VIM is functionally equivalent to the MCNP code but it has two features that make uniquely suited to the analysis of fast reactor critical experiments: (1) the place lattice geometry option, which allows efficient description of and neutron tracking in the assembly geometry, and (2) a statistical treatment of neutron cross section data in the unresolved resonance range. Since its inception, VIM`s capabilities have expanded to include numerous features, such as thermal neutron cross sections, photon cross sections, and combinatorial and other geometry options, that have allowed its use in a wide range of neutral-particle transport problems. The earliest validation work at Argonne National Laboratory (ANL) focused on the validation of VIM itself. This work showed that, in order for VIM to be a ``rigomus`` tool, extreme detail in the pointwise Monte Carlo libraries was needed, and the required detail was added. The emphasis soon shifted to validating models, methods, data and codes against VIM. Most of this work was done in the context of analyzing critical experiments in zero power reactor (ZPR) assemblies. The purpose …
Date: May 17, 1995
Creator: Schaefer, R.W.; McKnight, R.D. & Collins, P.J.
Object Type: Article
System: The UNT Digital Library
Two stage, low temperature, catalyzed fluidized bed incineration with in situ neutralization for radioactive mixed wastes (open access)

Two stage, low temperature, catalyzed fluidized bed incineration with in situ neutralization for radioactive mixed wastes

A two stage, low temperature, catalyzed fluidized bed incineration process is proving successful at incinerating hazardous wastes containing nuclear material. The process operates at 550{degrees}C and 650{degrees}C in its two stages. Acid gas neutralization takes place in situ using sodium carbonate as a sorbent in the first stage bed. The feed material to the incinerator is hazardous waste-as defined by the Resource Conservation and Recovery Act-mixed with radioactive materials. The radioactive materials are plutonium, uranium, and americium that are byproducts of nuclear weapons production. Despite its low temperature operation, this system successfully destroyed poly-chlorinated biphenyls at a 99.99992% destruction and removal efficiency. Radionuclides and volatile heavy metals leave the fluidized beds and enter the air pollution control system in minimal amounts. Recently collected modeling and experimental data show the process minimizes dioxin and furan production. The report also discusses air pollution, ash solidification, and other data collected from pilot- and demonstration-scale testing. The testing took place at Rocky Flats Environmental Technology Site, a US Department of Energy facility, in the 1970s, 1980s, and 1990s.
Date: May 17, 1995
Creator: Wade, Jonathan F. & Williams, Paul M.
Object Type: Report
System: The UNT Digital Library
Texas Disease Prevention News, Volume 53, Number 10, May 1993 (open access)

Texas Disease Prevention News, Volume 53, Number 10, May 1993

Newsletter of the Texas Department of Health discussing the news, activities, and events of the organization and other information related to health in Texas.
Date: May 17, 1993
Creator: Texas. Department of Health.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Parks & Wildlife News, May 17, 1991 (open access)

Texas Parks & Wildlife News, May 17, 1991

Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date: May 17, 1991
Creator: Texas. Parks and Wildlife Department.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The Role of Departments and Agencies in Budget Development (open access)

The Role of Departments and Agencies in Budget Development

Federal departments and agencies play an integral role in the development of the President's budget. The Budget and Accounting Act of 1921 requires the President to prepare and submit a comprehensive federal budget to Congress each year. Due to the size and complexity of the federal budget, however, the President relies on departments and agencies to bear the primary responsibility for formulating their budget requests.
Date: May 17, 1999
Creator: Heniff, Bill, Jr.
Object Type: Report
System: The UNT Digital Library