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Alumni J-TAC, Summer 2000
Alumni magazine of Tarleton State University providing information on events at the school and news about university students, staff, and alumni.
Date:
Summer 2000
Creator:
Tarleton State University
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
RF Capture Simulation for Gold Ions in AGS
N/A
Date:
October 1, 2000
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
The J-TAC (Stephenville, Tex.), Vol. 160, No. 12, Ed. 1 Thursday, November 30, 2000
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
November 30, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 160, No. 1, Ed. 1 Thursday, September 7, 2000
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
September 7, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 160, No. 7, Ed. 1 Thursday, October 19, 2000
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
October 19, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Notes on Switching between Proton and gold Operation in Booster and AGS
N/A
Date:
April 1, 2000
Creator:
Ahrens, L. A. & Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Fragmentation and Resulting Shrapnel Penetration of Naturally Fragmenting Cylindrical Bombs
Fragmentation of exploding cylinders and penetration mechanics of surrounding vessel walls were examined and a qualitative understanding was achieved. This understanding provided a basis for making simplifying approximations and assumptions that aided in creating a shrapnel penetration model. Several mathematical models were discussed, and results from 6 cylinder tests were analyzed in order to select a model that best represented the data. It was determined that the overall best mathematical model to predict shrapnel penetration uses the modified Gurney equation to calculate fragment velocity, the Mott equation to calculate largest fragment weight, and the Christman/Gehring equation to calculate penetration depth.
Date:
August 1, 2000
Creator:
Gardner, S. E.
Object Type:
Report
System:
The UNT Digital Library
Slant Borehole Demonstration Summary Report
This report provides a summary of the demonstration project for development of a slant borehole to retrieve soil samples from beneath the SX-108 single-shell tank. It provides a summary of the findings from the demonstration activities and recommendations for tool selection and methods to deploy into the SX Tank Farm. Daily work activities were recorded on Drilling and Sampling Daily Work Record Reports. The work described in this document was performed during March and April 2000.
Date:
July 19, 2000
Creator:
GARDNER, M.G.
Object Type:
Report
System:
The UNT Digital Library
Drift waves in stellarator geometry
Drift waves are investigated in a real three-dimensional stellarator geometry. A linear system, based on the cold ion fluid model and a ballooning mode formalism, is solved numerically in the geometry of the stellarator H1-NF. The spectra of stable and unstable modes, as well as localization, are discussed. The dependence of the spectrum of the unstable modes on the wavevector, plasma density variation, and the location in the plasma is presented.
Date:
February 7, 2000
Creator:
Persson, M.; Nadeem, M.; Lewandowski, J.L.V. & Gardner, H.J.
Object Type:
Report
System:
The UNT Digital Library
FODO/Doublet Lattice for the SNS Accumulator Ring.
Requirements of minimum beam loss for hand-on maintenance and flexibility for future operations are essential for the lattice design of the Spallation Neutron Source (SNS) accumulator ring. In this paper, we present a hybrid lattice that consists of FODO arcs and doublet straights, emphasizing injection and collimation optimization and flexibility, split tunes for coupling control, sextupole families for chromaticity control, and compatibility to future upgrades.
Date:
June 30, 2000
Creator:
Wei, J.; Gardner, C.; Lee, Y. Y. & Tsoupas, N.
Object Type:
Article
System:
The UNT Digital Library
Monte Carlo Advances for the Eolus Asci Project
The Eolus ASCI project includes parallel, 3-D transport simulation for various nuclear applications. The codes developed within this project provide neutral and charged particle transport, detailed interaction physics, numerous source and tally capabilities, and general geometry packages. One such code is MCNPW which is a general purpose, 3-dimensional, time-dependent, continuous-energy Monte Carlo fully-coupled N-Particle transport code. Significant advances are also being made in the areas of modern software engineering and parallel computing. These advances are described in detail.
Date:
January 1, 2000
Creator:
Hendrick, J. S.; Mckinney, G. W. & Cox, L. J.
Object Type:
Article
System:
The UNT Digital Library
Low Loss Rapid Cycling Synchrotron Design for the Spallation Neutron Source.
None
Date:
June 30, 2000
Creator:
Wei, J.; Beebe-Wang, J.; Blaskiewicz, M.; Brennan, M.; Cameron, P.; Catalan-Lasheras, N. et al.
Object Type:
Article
System:
The UNT Digital Library
Texas Attorney General Opinion: JC-307
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, John Cornyn, regarding a legal question submitted for clarification: Whether a criminal violation of the Open Meetings Act, chapter 551 of the Government COde, occurs when a person urges individual members of a commissioners court's agenda or to vote a certain way on an item on the agenda (RQ-0242-JC)
Date:
November 20, 2000
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
SNS Ring Study at the AGS Booster
During the g-2 run at the BNL AGS in early 2000, a 200 MeV storage-ring-like magnetic cycle has been set-up and tuned at the Booster in preparing for the Spallation Neutron Source (SNS) accumulator ring study. In this article, we report the progress of the machine set-up, tuning, some preliminary studies, and the future plan.
Date:
June 30, 2000
Creator:
Zhang, S. Y.; Ahrens, L.; Beebe-Wang, J.; Blaskiewicz, M.; Fedotov, A.; Gardner, C. et al.
Object Type:
Article
System:
The UNT Digital Library
A new assessment of RELAP5-3D using a General Electric level swell problem
The RELAP5-3D (version bt) computer program was used to assess a GE level swell experiment. The primary goal of the new assessment models was to faithfully represent the experimental facility and instrumentation. In developing the new models, a non-physical representation of the vessel heads in a previous assessment was found. This distortion resulted in predictions that closely matched the experimental data, but were in error. The new assessment also highlighted an instability in the calculation of interfacial drag. To explore this issue, analyses were performed using three different interfacial drag correlations appropriate for large diameter pipes and/or vessels. The results of this study show that the Kataoka-Ishii correlation, which is currently used in RELAP5-3D, compares most favorably with the experimental data. Additionally, a numerical instability was uncovered with the analysis performed using the Gardner correlation and was traced to the calculation of bubble diameter in the bubbly flow regime.
Date:
September 1, 2000
Creator:
Aumiller, D. L.; Tomlinson, E. T. & Clarke, W. G.
Object Type:
Article
System:
The UNT Digital Library
LLE Review, Quarterly Report: Volume 84, July-September 2000
This volume of the LLE Review, covering July-September 2000, begins with an article by T. R. Boehly, V. N. Goncharov, O. Gotchev, J. P. Knauer, D. D. Meyerhofer, D. Oron, S. P. Regan, Y. Srebro, W. Seka, D. Shvarts, S. Skupsky, and V.A. Smalyuk, who describe measurements of the effect of beam smoothing and pulse shape on imprinting. (Imprinting is defined as the imposition of pressure perturbations on the target by spatial variations in the laser intensity.) A principal result is the observation of reduced levels of imprint with the higher beam smoothing afforded by 1-THz smoothing by spectral dispersion (SSD). Additional highlights of research presented in this issue are: (1) P. W. McKenty, V. N. Goncharov, R. P. J. Town, S. Skupsky, R. Betti, and R. L. McCrory describe calculations of directly driven ignition capsule performance on the National Ignition Facility (NIF). The authors detail how the various contributors to implosion disruption (laser imprint, power imbalance, and target roughness) affect target performance and final gain. The conclusions are obtained by examining the simulated target evolution with the two-dimensional hydrodynamics computer code ORCHID. (2) D. D. Meyerhofer, J. A. Delettrez, R. Epstein, V. Yu. Glebov, V. N. Goncharov, R. L. …
Date:
December 1, 2000
Creator:
Marshall, Frederic J.
Object Type:
Report
System:
The UNT Digital Library
SYNCHROTRONS AND ACCUMULATORS FOR HIGH INTENSITY PROTONS: ISSUES AND EXPERIENCES.
This paper summarizes physical and engineering issues of high-intensity synchrotrons and accumulators, and discusses future applications and outlook.
Date:
June 30, 2000
Creator:
WEI,J.
Object Type:
Article
System:
The UNT Digital Library
Unsaturated Zone and Saturated Zone Transport Properties (U0100)
This Analysis/Model Report (AMR) summarizes transport properties for the lower unsaturated zone hydrogeologic units and the saturated zone at Yucca Mountain and provides a summary of data from the Busted Butte Unsaturated Zone Transport Test (UZTT). The purpose of this report is to summarize the sorption and transport knowledge relevant to flow and transport in the units below Yucca Mountain and to provide backup documentation for the sorption parameters decided upon for each rock type. Because of the complexity of processes such as sorption, and because of the lack of direct data for many conditions that may be relevant for Yucca Mountain, data from systems outside of Yucca Mountain are also included. The data reported in this AMR will be used in Total System Performance Assessment (TSPA) calculations and as general scientific support for various Process Model Reports (PMRs) requiring knowledge of the transport properties of different materials. This report provides, but is not limited to, sorption coefficients and other relevant thermodynamic and transport properties for the radioisotopes of concern, especially neptunium (Np), plutonium (Pu), Uranium (U), technetium (Tc), iodine (I), and selenium (Se). The unsaturated-zone (UZ) transport properties in the vitric Calico Hills (CHv) are discussed, as are colloidal …
Date:
December 20, 2000
Creator:
Conca, J.
Object Type:
Report
System:
The UNT Digital Library
Optical measurement of photosensitizer concentration using a probe with a small source-detector separation
None
Date:
January 1, 2000
Creator:
Canpolat, M. & Mourant, J. R.
Object Type:
Article
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 105, No. 5, Ed. 1 Wednesday, January 19, 2000
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 19, 2000
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Final Report U.S. Department of Energy Joint Inversion of Geophysical Data for Site Characterization and Restoration Monitoring
The purpose of this project was to conduct basic research leading to significant improvements in the state-of-the-art of geophysical imaging of the shallow subsurface. Geophysical techniques are commonly used for underground imaging for site characterization and restoration monitoring. in order to improve subsurface imaging, the objective was to develop improved methods for interpreting geophysical data collected in the field, by developing better methods for relating measured geophysical properties, such as seismic velocity and electrical conductivity, to hydrogeology parameters of interest such as porosity, saturation, and soil composition. They met the objectives using an approach that combined laboratory experiments, comparison to available field data, rock physics theories, and modeling, to find relationships between geophysical measurements, hydrogeological parameters and soil composition. The primary accomplishments of this project in the last year (FY99) were that they completed the laboratory measurements of ultrasonic velocities in soils at low pressures and the measurements of complex electrical conductivity in those same soils; they used x-ray computed microtomography to image the microstructure of several soil samples; they used rock physics theories and modeling to relate the geophysical measurements to the microstructure and hydrological properties; they developed a theoretical technique for relating compressional and shear wave velocities to …
Date:
July 31, 2000
Creator:
Berge, P. A.; Berryman, J. G.; Bertete-Aguirre, H.; Bonner, B. P.; Roberts, J. J. & Wildenschild, D.
Object Type:
Report
System:
The UNT Digital Library
Chemical Technology Division annual report, 1999.
None
Date:
July 17, 2000
Creator:
Lewis, D.; Miller, J. F.; Einziger, R. E.; Gay, E. C. & Green, D. W.
Object Type:
Report
System:
The UNT Digital Library
Permanganate Treatment of DNAPLs in Reactive Barriers and Source Zone Flooding Schemes - Final Report
This study provides a detailed process-level understanding of the oxidative destruction of the organic contaminant emphasizing on reaction pathways and kinetics. A remarkable rise in the MnO{sup {minus}} consumption rate with TCA and PCE mixtures proves that the phase transfer catalysts have the ability to increase oxidation rate of DNAPLs either in pure phase or mixtures and that there is significant potential for testing the catalyzed scheme under field conditions. Secondly, as an attempt to enhance the oxidation of DNAPL, we are trying to exploit cosolvency effects, utilizing various alcohol-water mixtures to increase DNAPL solubilization. Preliminary results of cosolvency experiments indicate the enhancement in the transfer of nonaqueous phase TCE to TBA-water solution and the rate of TCE degradation in aqueous phase.
Date:
October 1, 2000
Creator:
Schwartz, F. W.
Object Type:
Report
System:
The UNT Digital Library
Advanced Geothermal Turbodrill
Approximately 50% of the cost of a new geothermal power plant is in the wells that must be drilled. Compared to the majority of oil and gas wells, geothermal wells are more difficult and costly to drill for several reasons. First, most U.S. geothermal resources consist of hot, hard crystalline rock formations which drill much slower than the relatively soft sedimentary formations associated with most oil and gas production. Second, high downhole temperatures can greatly shorten equipment life or preclude the use of some technologies altogether. Third, producing viable levels of electricity from geothermal fields requires the use of large diameter bores and a high degree of fluid communication, both of which increase drilling and completion costs. Optimizing fluid communication often requires creation of a directional well to intersect the best and largest number of fracture capable of producing hot geothermal fluids. Moineau motor stators made with elastomers cannot operate at geothermal temperatures, so they are limited to the upper portion of the hole. To overcome these limitations, Maurer Engineering Inc. (MEI) has developed a turbodrill that does not use elastomers and therefore can operate at geothermal temperatures. This new turbodrill uses a special gear assembly to reduce the output …
Date:
May 1, 2000
Creator:
Maurer, W. C.
Object Type:
Report
System:
The UNT Digital Library