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Expected Harmonics (Version 1.0) in BNL-built LHC Dipoles
None
Date:
January 1, 1998
Creator:
A., Jain
Object Type:
Report
System:
The UNT Digital Library
Fundamental studies of fusion plasmas. Final report
Lodestar has carried out a vigorous research program in the areas of rf, edge plasma and divertor physics, with emphasis largely geared towards improving the understanding and performance of ion-cyclotron heating and current drive (ICRF) systems. Additionally, a research program in the field of edge plasma and divertor modeling was initiated. Theoretical work on high power rf sheath formation for multi-strap rf arrays was developed and benchmarked against recent experimental data from the new JET A2 antennas. Sophisticated modeling tools were employed to understand the sheath formation taking into account realistic three-dimensional antenna geometry. A novel physics explanation of an observed anomaly in the low power loading of antennas was applied to qualitatively interpret data on DIII-D in terms of rf sheaths, and potential applications of the idea to develop a near-field sheath diagnostic were explored. Other rf-wave related topics were also investigated. Full wave ICRF modeling studies were carried out in support of ongoing and planned tokamaks experiments, including the investigation of low frequency plasma heating and current drive regimes for IGNITOR. In a cross-disciplinary study involving both MHD and ICRF physics, ponderomotive feedback stabilization by rf was investigated as a potential means of controlling external kink mode disruptions. …
Date:
January 30, 1998
Creator:
Aamodt, R.E.
Object Type:
Report
System:
The UNT Digital Library
[Email from Julie Abel to Nancy Berry, January 22, 1998]
Email from Julie Abel to Nancy Berry acknowledging the grant reports from the National Center for Art Museum/School Program to the Getty Institute and approving NCAMSC's request to carryover network funds.
Date:
January 22, 1998
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Abilene City Council Minutes: 1998]
Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from January 8,1998 to December 17, 1998.
Date:
1998-01-08/1998-12-17
Creator:
Abilene (Tex.)
Object Type:
Book
System:
The Portal to Texas History
Tank waste remediation system mission analysis report
This document describes and analyzes the technical requirements that the Tank Waste Remediation System (TWRS) must satisfy for the mission. This document further defines the technical requirements that TWRS must satisfy to supply feed to the private contractors` facilities and to store or dispose the immobilized waste following processing in these facilities. This document uses a two phased approach to the analysis to reflect the two-phased nature of the mission.
Date:
January 9, 1998
Creator:
Acree, C. D.
Object Type:
Report
System:
The UNT Digital Library
Tank waste remediation system mission analysis report
The Tank Waste Remediation System Mission Analysis Report identifies the initial states of the system and the desired final states of the system. The Mission Analysis Report identifies target measures of success appropriate to program-level accomplishments. It also identifies program-level requirements and major system boundaries and interfaces.
Date:
January 6, 1998
Creator:
Acree, C. D.
Object Type:
Report
System:
The UNT Digital Library
Readiness to proceed: Characterization planning basis
This report summarizes characterization requirements, data availability, and data acquisition plans in support of the Phase 1 Waste Feed Readiness to Proceed Mid-Level Logic. It summarizes characterization requirements for the following program planning documents: Waste Feed Readiness Mid-Level Logic and Decomposition (in development); Master blue print (not available); Tank Waste Remediation System (TWRS) Operations and Utilization Plan and Privatization Contract; Enabling assumptions (not available); Privatization low-activity waste (LAW) Data Quality Objective (DQO); Privatization high-level waste (HLW) DQO (draft); Problem-specific DQOs (in development); Interface control documents (draft). Section 2.0 defines the primary objectives for this report, Section 3.0 discusses the scope and assumptions, and Section 4.0 identifies general characterization needs and analyte-specific characterization needs or potential needs included in program documents and charts. Section 4.0 also shows the analyses that have been conducted, and the archive samples that are available for additional analyses. Section 5.0 discusses current plans for obtaining additional samples and analyses to meet readiness-to-proceed requirements. Section 6.0 summarizes sampling needs based on preliminary requirements and discusses other potential characterization needs. Many requirements documents are preliminary. In many cases, problem-specific DQOs have not been drafted, and only general assumptions about the document contents could be obtained from the authors. …
Date:
January 19, 1998
Creator:
Adams, M.R.
Object Type:
Report
System:
The UNT Digital Library
Superconducting gravity gradiometers for underground target recognition. Final report
One of the most formidable intelligence challenges existing in the non-proliferation community is the detection of buried targets. The physical parameter that all buried targets share, whether the target is buried armaments, a tunnel or a bunker, is mass. In the case of buried armaments, there is an excess mass (higher density) compared to the surrounding area; for a tunnel or bunker, the mass is missing. In either case, this difference in mass generates a distinct gravitational signature. The Superconducting Gravity Gradiometer project at Sandia worked toward developing an airborne device for the detection of these underground structures.
Date:
January 1, 1998
Creator:
Adriaans, M.J.
Object Type:
Report
System:
The UNT Digital Library
Direct-drive laser fusion: status and prospects
Techniques have been developed to improve the uniformity of the laser focal profile, to reduce the ablative Rayleigh-Taylor instability, and to suppress the various laser-plasma instabilities. There are now three direct-drive ignition target designs that utilize these techniques. Evaluation of these designs is still ongoing. Some of them may achieve the gains above 100 that are necessary for a fusion reactor. Two laser systems have been proposed that may meet all of the requirements for a fusion reactor.
Date:
January 14, 1998
Creator:
Afeyan, B B; Bodner, S E; Gardner, J H; Knauer, J P; Lee, P; Lehmberg, R H et al.
Object Type:
Report
System:
The UNT Digital Library
Characterization and Prediction of Subsurface Pneumatic PressureVariations at Yucca Mountain, Nevada
Yucca Mountain, Nevada is being investigated as the proposed site for geologic disposal of high level nuclear waste. A massive data collection effort for characterization of the unsaturated zone is being carried out at the site. The USGS is monitoring the subsurface pressure variations due to barometric pumping in several boreholes. Numerical models are used to simulate the observed subsurface pressure variations. Data inversion is used to characterize the unsaturated system and estimate the pneumatic diffusivity of important geologic features. Blind predictions of subsurface response and subsequent comparison to recorded data have built confidence in the models of Yucca Mountain.
Date:
January 2, 1998
Creator:
Ahlers, C. Fredrik; Finsterle, Stefan & Bodvarsson, Gudmundur S.
Object Type:
Article
System:
The UNT Digital Library
Report to users of ATLAS, January 1998
This report is aimed at informing users about the operating schedule, user policies, and recent changes in research capabilities. It covers the following subjects: (1) status of the Argonne Tandem-Linac Accelerator System (ATLAS) accelerator; (2) the move of Gammasphere from LBNL to ANL; (3) commissioning of the CPT mass spectrometer at ATLAS; (4) highlights of recent research at ATLAS; (5) Program Advisory Committee; and (6) ATLAS User Group Executive Committee.
Date:
January 1, 1998
Creator:
Ahmad, I. & Hofman, D.
Object Type:
Report
System:
The UNT Digital Library
Developing enabling optics finishing technologies for the National Ignition Facility
Lawrence Livermore National Laboratory is in the process of constructing the National Ignition Facility, a half million square foot facility which will house a 192 beam laser system capable of generating the 2 million joules of ultraviolet light energy necessary to achieve fusion ignition with inertial targets by 2004. More than 7,000 meter class optics will need to be manufactured by LLNL`s industrial partners to construct the laser system. The components will be manufactured starting in 1998 and will be finished by 2003. In 1994 it became clear through a series of funded cost studies that, in order to fabricate such an unprecedented number of large precision optics in so short a time for the lowest possible cost, new technologies would need to be developed and new factories constructed based on those technologies. At that time, LLNL embarked on an ambitious optics finishing technology development program costing more than $6M over 3 years to develop these technologies, working with three suppliers of large precision optics. While each development program centered upon the specialties and often proprietary technologies already existing in the suppliers facility, many of the technologies required for manufacturing large precision optics at the lowest cost possible are common …
Date:
January 8, 1998
Creator:
Aikens, D. M.; Rich, L.; Bajuk, D. & Slomba, A.
Object Type:
Article
System:
The UNT Digital Library
NMR studies of bond arrangements in alkali phosphate glasses
Solid-state magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy has become a powerful tool for the investigation of local structure and medium range order in glasses. Previous {sup 31}P MAS NMR studies have detailed the local structure for a series of phosphate glasses. Phosphate tetrahedra within the glass network are commonly described using the Q{sup n} notation, where n = 0, 1, 2, 3 and represents the number of bridging oxygens attached to the phosphate. Using {sup 31}P MAS NMR different phosphate environments are readily identified and quantified. In this paper, the authors present a brief description of recent one dimensional (1D) {sup 6}Li, {sup 7}Li and {sup 31}P MAS experiments along with two-dimensional (2D) {sup 31}P exchange NMR experiments for a series of lithium ultraphosphate glasses. From the 2D exchange experiments the connectivities between different Q{sup n} phosphate tetrahedra were directly measured, while the 1D experiments provided a measure of the P-O-P bond angle distribution and lithium coordination number as a function of Li{sub 2}O concentration.
Date:
January 1, 1998
Creator:
Alam, T.M. & Brow, R.K.
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. Quarterly progress report, October 1, 1997--December 31, 1997
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 constructed 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:
January 1, 1998
Creator:
Allison, M. L.
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, October 1--December 1997
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 constructed 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. Two activities continued this quarter as part of the geological and petrophysical characterization of the fluvial-deltaic Ferron Sandstone and are described within: (1) regional stratigraphic interpretation and (2) technology transfer.
Date:
January 1, 1998
Creator:
Allison, M. L.
Object Type:
Report
System:
The UNT Digital Library
The Holifield Radioactive Ion Beam Facility at the Oak Ridge National Laboratory: Present status and Future Plans
The Holifield Radioactive Ion Beam Facility (HRIBF) is a first generation national user facility for nuclear physics and nuclear astrophysics research with radioactive ion beams (RIBs). The reconfiguration, construction, and equipment commissioning phases have been completed and the beam development program is in progress. In this article, descriptions of the facility and newly implemented experimental equipment for use in the nuclear and astrophysics programs will be given and an outline of the initial experimental program will be presented. Special target ion source related problems, endemic to the production of specific short lived RIBs will be discussed. In addition, plans, which involve either a 200 MeV or a 1 GeV proton linac driver for a second generation ISOL facility, will be presented.
Date:
January 1, 1998
Creator:
Alton, G. D. & Beene, J. R.
Object Type:
Article
System:
The UNT Digital Library
Southwest Retort, Volume 50, Number 14, January 1998
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
January 1998
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Low-quality natural gas sulfur removal/recovery
A significant fraction of U.S. natural gas reserves are subquality due to the presence of acid gases and nitrogen; 13% of existing reserves (19 trillion cubic feed) may be contaminated with hydrogen sulfide. For natural gas to be useful as fuel and feedstock, this hydrogen sulfide has to be removed to the pipeline specification of 4 ppm. The technology used to achieve these specifications has been amine, or similar chemical or physical solvent, absorption. Although mature and widely used in the gas industry, absorption processes are capital and energy-intensive and require constant supervision for proper operation. This makes these processes unsuitable for treating gas at low throughput, in remote locations, or with a high concentration of acid gases. The U.S. Department of Energy, recognizes that exploitation of smaller, more sub-quality resources will be necessary to meet demand as the large gas fields in the U.S. are depleted. In response to this need, Membrane Technology and Research, Inc. (MTR) has developed membranes and a membrane process for removing hydrogen sulfide from natural gas. During this project, high-performance polymeric thin-film composite membranes were brought from the research stage to field testing. The membranes have hydrogen sulfide/methane selectivities in the range 35 to …
Date:
January 29, 1998
Creator:
Amo, K.; Baker, R. W.; Helm, V. D.; Hofmann, T.; Lokhandwala, K. A.; Pinnau, I. et al.
Object Type:
Report
System:
The UNT Digital Library
Task 3.16 -- Low-cost coal-water fuel for entrained-flow gasification. Semi-annual report, July 1--December 31, 1995
Continued interest in gasification technologies has led to the need for more technological advances in the area of fuel cleanup and fuel feed systems, which invariably affect the other components comprised by gasification systems. Some entrained-flow gasifiers require the fuel to be a slurry form or a coal-water fuel (CWF). Recent technological advances at the Energy and Environmental Research Center (EERC) have led to potential means for improving efficiency and air toxics control for gasifiers that utilize CWF. Highly reactive low-rank coals present an attractive CWF gasification feedstock. Hydrothermally treating low-rank coals allows a CWF to be formulated that has an elevated solids content, which reduces the amount of water fed to the gasifier, thereby decreasing the amount of oxygen needed to gasify the coal. Preliminary measurements show that the process would increase the solids content from 53 to 63 wt%, giving a 20% improvement in energy density. The specific objective of this research project is to assess the potential process efficiency and pollution control benefits that may result from applying the hydrothermal, or hot-water-drying (HWD), process to low-rank coals as related to entrained-flow gasification systems. Project emphasis is on identifying more efficient coal dewatering and CWF formulation methods prior …
Date:
January 1, 1998
Creator:
Anderson, C.M.
Object Type:
Report
System:
The UNT Digital Library
Document Template for Printed Circuit Board Layout
The purpose of this document is to list the information that may be required to properly specify a printed circuit board (PCB) design. You must provide sufficient information to the PCB layout vendor such that they can quote accurately and design the PCB that you need. Use the following information as a guide to write your specification. Include as much of it as is necessary to get the PCB design that you want.
Date:
January 1, 1998
Creator:
Anderson, J. T.
Object Type:
Report
System:
The UNT Digital Library
University Press (Beaumont, Tex.), Vol. 74, No. 26, Ed. 1 Wednesday, January 14, 1998
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
January 14, 1998
Creator:
Andris, Tonya
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 74, No. 27, Ed. 1 Friday, January 23, 1998
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
January 23, 1998
Creator:
Andris, Tonya
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 74, No. 28, Ed. 1 Wednesday, January 28, 1998
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
January 28, 1998
Creator:
Andris, Tonya
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 74, No. 29, Ed. 1 Friday, January 30, 1998
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
January 30, 1998
Creator:
Andris, Tonya
Object Type:
Newspaper
System:
The Portal to Texas History