Magnetic measurements of the storage ring quadrupole magnets for the 7-GeV Advanced Photon Source (open access)

Magnetic measurements of the storage ring quadrupole magnets for the 7-GeV Advanced Photon Source

The pre-production quadrupole magnet for the Advanced Photon Source (APS) storage ring has been used. The multipole coefficients meet the tolerance requirements. The field-gradient integrals are measured relative to a reference quadrupole. By using two laser beam units, the magnetic and geometrical axes of the magnet are aligned within 0.2 mrad. The dependencies of the sextupole coefficient and the magnetic center on the excitation current are corrected by shunting the magnetic potentials of the top and bottom yokes.
Date: July 1, 1993
Creator: Kim, S. H.; Kim, K.; Doose, C.; Hogrefe, R. & Merl, R.
Object Type: Article
System: The UNT Digital Library
A pulsed septum magnet for the APS (open access)

A pulsed septum magnet for the APS

A pulsed septum magnet has been designed and constructed for beam injection and extraction in the Advanced Photon Source at Argonne National Laboratory. The magnets will be similar for the Positron Accumulator Ring (PAR), the Injector Synchrotron, and the Storage Ring. The septum itself is 2 mm thick and consists of 1-mm-thick copper and S1010 steel explosion-bonded together. The PAR magnet is driven by a 1500-Hz, 12-kA half sine wave current pulse. The core is made of 0.36-mm-thick laminations of silicon steel. The nearly uniform interior field is 0.75 T and the exterior field is 0.0004 T at the undisturbed beam position and 0.0014 T at the bumped beam position. Testing of the magnet awaits the completion of the power supply.
Date: July 1, 1993
Creator: Turner, L. R.; McGhee, D. G.; Mills, F. E. & Reeves, S.
Object Type: Article
System: The UNT Digital Library
Material-not-categorized-as-waste survey for 1992 (open access)

Material-not-categorized-as-waste survey for 1992

In October 1992, the US Department of Energy, Richland Field Office (RL) requested that Westinghouse Hanford Company (WHC) respond to a letter from EM-331 asking for completion of a survey of items in storage but not categorized as waste (Roberts 1992). The letter contained an attachment with instructions on how to fill out the attached form and what to exclude from the survey (Appendix A). This report is a summary of the information from the response issued to RL. This report primarily is for use in estimating future waste volumes that may have been overlooked because of the nature of their classification as material not categorized as waste (MNCAW) (i.e., not yet declared Waste).
Date: July 1, 1993
Creator: Jacobsen, P. H.
Object Type: Report
System: The UNT Digital Library
Analysis of superconducting magnetic energy storage applications at a proposed wind farm site near Browning, Montana (open access)

Analysis of superconducting magnetic energy storage applications at a proposed wind farm site near Browning, Montana

A computer program was developed to analyze the viability of integrating superconducting magnetic energy storage (SMES) with proposed wind farm scenarios at a site near Browning, Montana. The program simulated an hour-by-hour account of the charge/discharge history of a SMES unit for a representative wind-speed year. Effects of power output, storage capacity, and power conditioning capability on SMES performance characteristics were analyzed on a seasonal, diurnal, and hourly basis. The SMES unit was assumed to be charged during periods when power output of the wind resource exceeded its average value. Energy was discharged from the SMES unit into the grid during periods of low wind speed to compensate for below-average output of the wind resource. The option of using SMES to provide power continuity for a wind farm supplemented by combustion turbines was also investigated. Levelizing the annual output of large wind energy systems operating in the Blackfeet area of Montana was found to require a storage capacity too large to be economically viable. However, it appears that intermediate-sized SMES economically levelize the wind energy output on a seasonal basis.
Date: July 1, 1993
Creator: Gaustad, K. L. & De Steese, J. G.
Object Type: Article
System: The UNT Digital Library
Curecanti-Blue Mesa-Salida 115-kV transmission lines access roads rehabilitation, maintenance, and construction project. Environmental Assessment (open access)

Curecanti-Blue Mesa-Salida 115-kV transmission lines access roads rehabilitation, maintenance, and construction project. Environmental Assessment

Western Area Power Administration (Western) is a power marketing agency of the US Department of Energy, with jurisdiction in 15 western states. The Salt Lake City Area (SLCA) of Western performs the agency`s mission in parts of Colorado, New Mexico, Texas, Utah, Arizona, Wyoming, and Nevada. As part of its mission, Western owns, operates, and maintains a system of transmission lines for transmitting bulk electrical energy from points of generation to and between delivery points. Part of that system in southwestern Colorado includes the Blue Mesa-Curecanti and Blue Mesa-Salida 115-kV transmission lines. Western proposes to conduct maintenance and improve its access roads for these two transmission lines. This paper discusses the impacts to the existing environment as well as the environmental consequences resulting from the maintenance and construction that is proposed.
Date: July 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Investigation of oxygen functional groups in low rank coal (open access)

Investigation of oxygen functional groups in low rank coal

The distribution of the organic oxygen content of coals among the principal oxygen containing functional groups typically is determined by a combination of chemical and spectroscopic methods (1,2) and results in a classification scheme such as % carboxyl, % hydroxyl, % carbonyl, and % ether. A notable subdivision in this classification scheme is the differentiation of phenols in a coal on the basis of their ortho-substitution pattern (3). Apart from this distinction, the further classification of oxygen into functional group subsets is virtually nonexistent. This paper presents initial experiments that indicate a fuller characterization of oxygen distribution in low rank coal is possible. The experimental approach couples selective chemical perturbation and solid state NMR analysis of the material, specifically, the fluorination of Argonne Premium Coal {number_sign}8, North Dakota lignite, and spectroscopic examination by high resolution solid state {sup 19}F NMR (4). The fluorination reagent is diethylaminosulfur trifluoride (DAST), (Et){sub 2}NSF{sub 3}, which promotes a rich slate of oxygen functional group interconversions that introduce fluorine into the coal matrix (5). The virtual absence of this element in coals make {sup 19}F an attractive NMR nuclei for this application (6). The present experiments use direct detection of the {sup 19}F nucleus under …
Date: July 1, 1993
Creator: Hagaman, E. W. & Lee, S. K.
Object Type: Article
System: The UNT Digital Library
Radiative capture mechanisms in the {sup 89}Y({rvec p},{gamma}) reaction (open access)

Radiative capture mechanisms in the {sup 89}Y({rvec p},{gamma}) reaction

We have measured the spectra of gamma rays from approximately 14 MeV to the endpoint in the {sup 89}Y({rvec p},{gamma}) reaction with 19.6 MeV polarized protons from the TUNL tandem accelerator. Gamma spectra were measured with a pair of 25.4 cm {times} 25.4 cm anticoincidence shielded NaI detectors at angles of 30, 55, 90, 125, and 150{degrees} with respect to the incident beam. The {gamma}-ray spectra show significant analyzing powers and forward peaking of the angular distributions. These features allow for the discrimination between compound processes which do not exhibit interference between different channels, and direct processes. The observed interference effects indicate that multistep-direct processes are important at {gamma}-ray energies lower than those for which direct-semidirect capture is the dominant mechanism.
Date: July 28, 1993
Creator: Parker, W. E.; Dietrich, F. S.; Sale, K. E.; Kammeraad, J. E.; Luke, S. J.; Weller, H. R. et al.
Object Type: Article
System: The UNT Digital Library
Shock compression properties of silicon carbide (open access)

Shock compression properties of silicon carbide

An investigation of the shock compression and release properties of silicon carbide ceramic has been performed. A series of planar impact experiments has been completed in which stationary target discs of ceramic were struck by plates of either similar ceramic or other appropriate material at velocities up to 2.2 km/s with a propellant gun facility. The particle velocity history at the interface between the back of the target ceramic and a lithium-fluoride window material was measured with laser velocity interferometry (VISAR). Impact stresses achieved in these experiments range between about 10 and 50 GPa. Numerical solutions and analytic methods were used to determine the dynamic compression and release stress-strain behavior of the ceramic. Further analysis of the data was performed to determine dynamic strength and compressibility properties of silicon carbide.
Date: July 1, 1993
Creator: Grady, D. E. & Kipp, M. E.
Object Type: Report
System: The UNT Digital Library
Sol-spray preparation, particulate characteristics, and sintering of alumina powders (open access)

Sol-spray preparation, particulate characteristics, and sintering of alumina powders

Fine alumina powders of spherical morphology and narrow particle-size distribution have been synthesized by a technique that uses precipitation/peptization/spray drying of boehmite sol prepared from aluminum nitrate. The spray-dried powder was further washed with solvents of varying polarities, such as acetone, isopropanol, and tert-butanol. This post-spray-drying treatment changed the powder`s particle-size distribution, morphology, density, and compaction characteristics. Microstructure, dielectric properties, and effect of post-treatment on the boehmite-sol-derived alumina powders in reducing agglomeration are discussed.
Date: July 1, 1993
Creator: Varma, H. K.; Mani, T. V.; Damodaran, A. D.; Warrier, K. G. K. & Balachandran, U.
Object Type: Article
System: The UNT Digital Library
Measurement and analysis of three 1.5-GPa shock-wave profiles in copper (open access)

Measurement and analysis of three 1.5-GPa shock-wave profiles in copper

Three wave-profile experiments were performed on OFE fully annealed (600{degree}C for one hour) copper using a 101.6-mm-diam gas gun at impact velocities of 86 m/s. A symmetric impact produced a 1.5-GPa shock wave in the target. A sapphire window was bonded to the front (non-impact) face of the target, and a four-detector push-pull velocity interferometer (VISAR) measured the velocity of the copper/sapphire interface. The impactor thickness (4 mm) was the same in all experiments, the target thicknesses were 10, 20, and 30 mm. The stresses and strains, including the deviatoric stresses and strains, have been extracted from these data using a quasi-Lagrangian analysis. (The waves are not steady.) The use of three separate shots in Lagrangian analysis yields only approximate results for the deviatoric stresses; but the results for the normal stresses, and for the strains, are fairly accurate. Even though the strain rates fall in the Hopkinson bar regime, the mechanism of dislocation motion appears to be dislocation drag, as is the case for stronger shock waves in Cu.
Date: July 1, 1993
Creator: Warnes, R. H. & Tonks, D. L.
Object Type: Report
System: The UNT Digital Library
The effects of moisture on the microstructure of cement-based materials. Progress report (open access)

The effects of moisture on the microstructure of cement-based materials. Progress report

New information about shrinkage at the microstructural level has been acquired. Experiments and computer analysis serve as a basis for modeling. Some highlights: C-S-H (shrinking phase) shrinks and values for dimensional change are being determined. There may be two types of C-S-H, only one of which shrinks. All other phases serve as restraints to shrinkage. Pores expand on drying and therefore may be a mechanism for the ``size effect``, in addition to microcracks.
Date: July 15, 1993
Creator: Jennings, H. M.
Object Type: Report
System: The UNT Digital Library
Nuclear transparency and double beta decay of molybdenum 100. Annual progress report, February 1, 1993--January 31, 1994 (open access)

Nuclear transparency and double beta decay of molybdenum 100. Annual progress report, February 1, 1993--January 31, 1994

The analysis of the data obtained in an experiment to search for double beta decay in molybdenum 100 with collaborators from the Lawrence Berkeley Laboratory, the University of New Mexico, and the Idaho National Engineering Laboratory has nearly been completed, and a paper giving a lower limit of 0.44 {times} 10{sup 23} years on the lifetime of the O{sup +} {yields} O{sub +} neutrinoless doable beta decay mode has been accepted for publication in Physical Review Letters. A scintillating fiber beam hodoscope has been designed, built, and tested and used in the EVA detector during the June--July run of AGS Experiment 850 at the Brookhaven National Laboratory. The EVA detector is designed to study color transparency in nuclei and large angle exclusive reactions for momenta between 6 and 20 GeV/c incident beam momenta. At present, the construction of all systems of the EVA detector, which consists of a large superconducting solenoid, 5500 straw tubes arranged in four cylinders, and 500 trigger scintillation counters arranged in two rings and 100 channels of beam hodoscope, has nearly been completed, and the detector is currently being calibrated and is taking data at 6 GeV/c incident beam momentum. We have also been invited to …
Date: July 1, 1993
Creator: Nicholson, H. W.
Object Type: Report
System: The UNT Digital Library
Influence of restricted diffusion on retrogressive free-radical reactions (open access)

Influence of restricted diffusion on retrogressive free-radical reactions

The effects of restricted mass transport on retrogressive reaction pathways can be probed through the study of model compounds immobilized on silica surfaces. Silica-immobilized bibenzyl undergoes a free radical chain rearrangement reaction that converts the thermally labile bibenzylic linkage into a more refractory diphenylmethane-type linkage. The efficiency of this process was found to be quite sensitive to the structure of neighboring molecules on the surface. Co-immobilized naphthalene was more effective that co-immobilized tetralin (a hydrogen donor) in inhibiting the process, apparently by retarding the key hydrogen atom transfer step. The effect of the co-attached molecules on the retrogressive cyclization-dehydrogenation path as well as other reaction pathways for this complex system remain under investigation.
Date: July 1, 1993
Creator: Buchanan, A. C.; Britt, P. F. III & Thomas, K. B.
Object Type: Article
System: The UNT Digital Library
Enhanced oil recovery utilizing high-angle wells in the Frontier Formation, Badger Basin Field, Park County, Wyoming. Quarterly technical progress report, 1 March 1993--30 June 1993 (open access)

Enhanced oil recovery utilizing high-angle wells in the Frontier Formation, Badger Basin Field, Park County, Wyoming. Quarterly technical progress report, 1 March 1993--30 June 1993

Sierra Energy Company`s targeted goals during the third quarter of this Cooperative Agreement included the following objectives from the Statement of Work: in Phase 2A, completion of subtask 2.1.2--acquire best possible field data in the 3-D seismic program; and initiation of Subtask 2.1.3--process acquired 3-D seismic data. Technical progress is described for these tasks.
Date: July 10, 1993
Creator: Fortmann, R. G. & Walker, J. P.
Object Type: Report
System: The UNT Digital Library
Trapping of antiprotons -- a first step on the way to antihydrogen (open access)

Trapping of antiprotons -- a first step on the way to antihydrogen

A first step towards producing and effectively utilizing antihydrogen atoms consists of trapping antiprotons. The immediate next step must then be to control, i.e. trap the produced antihydrogen. The current state of the art in trapping antiprotons and positrons is reviewed, and the challenges in trapping the resulting neutral particles are discussed.
Date: July 1, 1993
Creator: Holzscheiter, M. H.
Object Type: Article
System: The UNT Digital Library
Three dimensional ultrasonic imaging: An aging aircraft nondestructive inspection tool (open access)

Three dimensional ultrasonic imaging: An aging aircraft nondestructive inspection tool

Ultrasonic nondestructive evaluation is a valuable technique for finding defects in aircraft structures. It can detect unbonds, corrosion damage and cracks in various aircraft components. Ultrasonic nondestructive evaluation techniques interrogate materials with high frequency acoustic energy. A piezoelectric transducer generates acoustic energy and converts returned acoustic energy into electrical signals which can be processed to identify the reflector. The acoustic energy propagates through the component and is reflected by abrupt changes in modulus and/or density that can be caused by a defect. Ultrasonic nondestructive evaluation typically provides a two dimensional image of internal defects. These images are either a planar view (C-scan) or a cross-sectional view (B-scan) of the component. The planar view is generated by raster scanning an ultrasonic transducer over the area of interest and capturing the peak amplitude of internal reflections. Depth information is generally ignored. The crass-sectional view is generated by scanning the transducer along a line and capturing the amplitude and time of flight for each internal reflection. The amplitude and time of flight information is converted into an image of the cross section of the component. By fusing the C-scan information with the B-scan information a three dimension image of the internal structure of …
Date: July 1, 1993
Creator: Thomas, G. H.; Benson, S. & Crawford, S.
Object Type: Article
System: The UNT Digital Library
Material control evaluation (open access)

Material control evaluation

Changes in the Department of Energy`s (DOE) scope of work have stimulated several laboratories and commercial companies to develop and apply technology to enhance nuclear material control. Accountability, inventory, radiation exposure, and insider protection concerns increase as many DOE facilities require increased storage. This paper summarizes a study of the existing material control technologies. The goal of the study is to identify, characterize, and quantify the trade-offs associated with using these technologies to provide real-time information on stored nuclear material that in turn supports decreasing the frequency of inventories conducted by site personnel.
Date: July 1, 1993
Creator: Waddoups, I. G.; Anspach, D. A. & Abbott, J. A.
Object Type: Article
System: The UNT Digital Library
Automatic emittance measurement at the ATF (open access)

Automatic emittance measurement at the ATF

An automatic emittance measurement system to characterize the transverse emittance of the electron beam produced by the BNL photocathode electron gun is described. The system utilize a VAX workstation and a Spiricon beam analyzer. A operator window (created through the Vista control software package) controls the emittance measurement system and the graphic presentation of the results. Quadrupole variation method is used for the ATF automatic emittance measurement system. A simple emittance formula was derived to study the performance of the quadrupole variation method, and compared with the ATF experimental data is also presented.
Date: July 1, 1993
Creator: Wang, X. J.; Malone, R.; Batchelor, K. & Ben-Zvi, Ilan
Object Type: Article
System: The UNT Digital Library
Environmental Monitoring Plan (open access)

Environmental Monitoring Plan

This Environmental Monitoring Plan was written to fulfill the requirements of Department of Energy (DOE) Order 5400.1 and DOE Environmental Regulatory Guide DOE/EH 0173T. This Plan documents the background, organizational structure, and methods used for effluent monitoring and environmental surveillance at Sandia National Laboratories/California. The design, rationale, and historical results of the environmental monitoring system are discussed in detail. Throughout the Plan, recommendations for improvements to the monitoring system are made. This revision to the Environmental Monitoring Plan was written to document the changes made to the Monitoring Program during 1992. Some of the data (most notably the statistical analyses of past monitoring data) has not been changed.
Date: July 1, 1993
Creator: Holland, R. C.
Object Type: Report
System: The UNT Digital Library
Studies of coal structure and extraction by magnetic relaxation techniques. [Quarterly technical progress report, March--May 1993] (open access)

Studies of coal structure and extraction by magnetic relaxation techniques. [Quarterly technical progress report, March--May 1993]

NMP-CS{sub 2} extraction of the Argonne Premium coals results in substantial uptake of NMP, apparently H-bonding most extensively to coals for which extraction is most efficient. The solvent mobilization and exposure of free radicals in the molecular and macromolecular parts of the coals leads to preferential loss of apparently more reactive heteroatom-bearing free radicals. The resulting extract and residue free radicals are more predominantly odd-alternate hydrocarbon fire radicals. SLR of these radicals is determined by the angular amplitudes of free radical motion at the resonance frequency that modulates the electron-nuclear dipolar interaction at the CH groups. The strength of the interaction depends on the degree of ring condensation because of its effect on diluting the electron spin density at the CH group.
Date: July 1, 1993
Creator: Doetschman, D. C.; Mehlenbacher, R. C. & Ito, O.
Object Type: Article
System: The UNT Digital Library
Texas Attorney General Opinion: DM-235 (open access)

Texas Attorney General Opinion: DM-235

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Whether a delinquent tax penalty adopted by the Cameron County Commissioners Court under section 33.07 of the Tax Code applies to delinquent taxes subject to installment agreements entered into under section 33.02 of the Tax Code prior to July 1 of the year which taxes became delinquent (RQ-528)
Date: July 12, 1993
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: DM-236 (open access)

Texas Attorney General Opinion: DM-236

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Whether the City of Austin has the authority to enact an ordinance prohibiting random drug testing by private employers within the city (RQ-526)
Date: July 20, 1993
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: DM-237 (open access)

Texas Attorney General Opinion: DM-237

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Validity of a state licensing fee assessed on certified public accounts who are employed by the federal government (RQ-485)
Date: July 21, 1993
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: DM-238 (open access)

Texas Attorney General Opinion: DM-238

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Whether chapter 106 of the Human Resources Code requires a facility that submits the name of an employee for a criminal conviction check to terminate the employee if the checks reveal convictions of certain offenses (RQ-211)
Date: July 21, 1993
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History