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ROCK FALL CALCULATIONS FOR SINGLE CORROSION RESISTANT MATERIAL WASTE PACKAGES

Description: The purpose of this activity is to determine the structural performance of waste packages (WP) subject to rock fall design basis event (DBE) dynamic loads and document the calculation results that describe the threshold rock sizes for crack-initiation and through-cracks in waste package shells. This activity is associated with the waste package design. AP-3.12Q, Revision 0, ICN 0, Calculations, is used to develop the calculation.
Date: September 20, 1999
Creator: Bader, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HIGH TEMPERATURE HIGH PRESSURE THERMODYNAMIC MEASUREMENTS FOR COAL MODEL COMPOUNDS

Description: It is well known that the fluid phase equilibria can be represented by a number of {gamma}-models , but unfortunately most of them do not function well under high temperature. In this calculation, we mainly investigate the performance of UNIQUAC and NRTL models under high temperature, using temperature dependent parameters rather than using the original formulas. the other feature of this calculation is that we try to relate the excess Gibbs energy G{sup E}and enthalpy of mixing H{sup E}simulta… more
Date: February 20, 1999
Creator: Kabadi, Vinayak N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of Test Facility for Structural Evaluation of Composite Rotor Hubs

Description: The rotorcraft industry is constantly evaluating new types of lightweight composite materials that not only enhance the safety and reliability of rotor components, but also improve performance and extend operating life as well. The tests required for these evaluations are typically quite complex requiring massive test fixtures, in many cases, along with multiple actuators for loading test articles at various points simultaneously. This paper discusses the background for development of the facil… more
Date: July 20, 1999
Creator: Dorrell, Larry & Roach, Dennis
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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General and localized corrosion of the drip shield

Description: Ti Gr 7 is an extremely corrosion resistant material, with a very stable passive film. Based upon exposures in the LTCTF, it has been determined that the general corrosion and oxidation rates of Ti Gr 7 are essentially below the level of detection. In any event, over the 10,000 year life of the repository, general corrosion and oxidation should not be life limiting. The large separation between measured corrosion and threshold potentials indicate that localized breakdown of the passive film is … more
Date: August 20, 1999
Creator: Estill, J. C.; Farmer, J. C. & McCright, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Crust Ingestion on Mixer Pump Performance in Tank 241-SY-101: Workshop Results

Description: In August 1999, a workshop was held at Pacific Northwest National Laboratory to discuss the effects of crust ingestion on mixer pump performance in Hanford Waste Tank 241-SY-101. The main purpose of the workshop was to evaluate the potential for crust ingestion to degrade mixing and/or damage the mixer pump. The need for a previously determined 12-inch separation between the top of the mixer pump inlet and the crust base was evaluated. Participants included a representative from the pump manufa… more
Date: October 20, 1999
Creator: Brennen, C.E.; Stewart, C.W. & Meyer, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reduction of X-BPM systematic errors by modification of lattice in the APS storage ring.

Description: With recent developments, X-ray beam position monitors (BPMs) are capable of making accurate photon position measurements down to the sub-micron level. The true performance of X-ray beam position monitors when installed on insertion device beamlines is, however, severely limited due to the stray radiation traveling along the beamline that contaminates the insertion device photons. The stray radiation emanates from upstream and downstream dipole magnet fringe fields, from steering correctors, an… more
Date: April 20, 1999
Creator: Decker, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

TTP SR1-6-WT-31, Milestone C.3-2 Annual Report on Clemson/INEEL Melter Work

Description: This work is performed in collaboration with RL37WT31-C and ID77WT31-B. During the first two years of radioactive operation of the DWPF process, several areas for improvement in melter design have been identified. The continuing scope of this task is to address performance limitations and deficiencies identified by the user. SRS will design and test several configurations of the melter pour spout and associated equipment to improve consistency of performance and recommend design improvements.
Date: October 20, 1999
Creator: Bickford, D.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improved performance of the laser guide star adaptive optics system at Lick Observatory

Description: Results of experiments with the laser guide star adaptive optics system on the 3-meter Shane telescope at Lick Observatory have demonstrated a factor of 4 performance improvement over previous results. Stellar images recorded at a wavelength of 2 {micro}m were corrected to over 40% of the theoretical diffraction-limited peak intensity. For the previous two years, this sodium-layer laser guide star system has corrected stellar images at this wavelength to {approx}10% of the theoretical peak inte… more
Date: July 20, 1999
Creator: An, J. R.; Avicola, K.; Bauman, B. J.; Brase, J. M.; Campbell, E. W.; Carrano, C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Finite Element Modeling of Micromachined MEMS Photon Devices

Description: The technology of microelectronics that has evolved over the past half century is one of great power and sophistication and can now be extended to many applications (MEMS and MOEMS) other than electronics. An interesting application of MEMS quantum devices is the detection of electromagnetic radiation. The operation principle of MEMS quantum devices is based on the photoinduced stress in semiconductors, and the photon detection results from the measurement of the photoinduced bending. These dev… more
Date: September 20, 1999
Creator: Datskos, P. G.; Evans, B. M. & Schonberger, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Refrigerator and Solenoid Run Summary August/September 1999

Description: The helium refrigerator was cooled down and operated for the third time since its installation. D-Zero's 2 Tesla superconducting solenoid was cooled down and operated for its second time since its installation into the D-Zero detector. This engineering note summarizes the cryogenic aspects of the test run and performance measurements made. The main purpose of this run was to do field mapping of the solenoid with different combinations of field polarity on the Solenoid and CF iron magnets. This … more
Date: September 20, 1999
Creator: Rucinski, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Front-End Data Reduction in Computer-Aided Diagnosis of Mammograms: A Pilot Study

Description: This paper presents the results of a pilot study whose primary objective was to further substantiate the efficacy of front-end data reduction in computer-aided diagnosis (CAD) of mammograms. This concept is realized by a preprocessing module that can be utilized at the front-end of most mammographic CAD systems. Based on fractal encoding, this module takes a mammo-graphic image as its input and generates, as its output, a collection of subregions called focus-of-attention regions (FARs). These … more
Date: February 20, 1999
Creator: Gleason, S.S.; Nishikawa, R.M. & Sari-Sarraf, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance of a high-resolution x-ray microprobe at the Advanced Photon Source.

Description: The authors have developed a x-ray microprobe in the energy region from 6 to 20 keV using undulator radiation and zone-plate optics for microfocusing-based techniques and applications at a beamline at the Advanced Photon Source (APS). The performance of the beamline was shown to meet the design objectives, including preservation of the source brilliance and coherence, selectable transverse coherence length and energy bandwidth, high angular stability, and harmonic suppression of the beam. These… more
Date: December 20, 1999
Creator: Cai, Z.; Lai, B.; Yun, W.; McNulty, I.; Khounsary, A.; Maser, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance of hard X-ray zone plates at the Advanced Photon Source

Description: Fresnel zone plates have been highly successful as focusing and imaging optics for soft x-ray microscopes and microprobe. More recently, with the advent of third-generation high-energy storage rings, zone plates for the hard x-ray regime have been put to use as well. The performance of zone plates manufactured using a combination of electron-beam lithography and x-ray lithography is described.
Date: December 20, 1999
Creator: Maser, J.; Lai, B.; Cai, Z.; Rodrigues, W.; Legnini, D.; Ilinski, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wind-Diesel Hybrid Systems for Russia's Northern Territories

Description: This paper will summarize the DOE/Russian Ministry of Fuel and Energy (MF and E) activities in Russia's Northern Territories in the field of hybrid wind-diesel power systems over the last three years (1997-1999). The National Renewable Energy Laboratory (NREL) supplied technical assistance to the project, including resource assessment, system design, site identification, training and system monitoring. As a result, several wind-diesel systems have been installed and are operating in the Arkhang… more
Date: October 20, 1999
Creator: Gevorgian, V.; Touryan, K.; Bezrukikh, P.; Bezrukikh, P. Jr. & Karghiev, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Portable NDA equipment for enrichment measurements for the HEU transparency program

Description: In October 1996, the Department of Energy (DOE) and MINATOM agreed to use portable non-destructive assay (NDA) equipment to measure the {sup 235}U enrichment of material subject to the HEU Transparency agreement. A system based on the ''enrichment meter'' method and high-purity germanium (HPGe) detectors had been previously developed for this application. Instead, sodium iodide (NaI) detectors were chosen to measure {sup 235}U enrichment because HPGe systems might reveal sensitive information. … more
Date: July 20, 1999
Creator: Decman, D J; Glaser, J; Hernandez, J M & Luke, S J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Calculations of the self-amplified spontaneous emission performance of a free-electron laser.

Description: The linear integral equation based computer code (RON: Roger Oleg Nikolai), which was recently developed at Argonne National Laboratory, was used to calculate the self-amplified spontaneous emission (SASE) performance of the free-electron laser (FEL) being built at Argonne. Signal growth calculations under different conditions are used for estimating tolerances of actual design parameters. The radiation characteristics are discussed, and calculations using an ideal undulator magnetic field and … more
Date: April 20, 1999
Creator: Dejus, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

POW7-glasses/liquids diffractometer-reference instrument WBS 1.7.6.

Description: POW7 is designed for structural measurements on glasses and liquids. Figure 1 provides a schematic representation of POW7, and Table 1 gives the parameters for this instrument. The short incident flight path maintains the highest possible flux on sample to allow the counting statistics needed to effectively use isotope substitution in cases where the contrast is low. Emphasis is placed on using the shortest wavelengths practical to measure each Q in order to minimize inelasticity effects.
Date: January 20, 1999
Creator: Crawford, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Prediction of Gas Injection Performance for Heterogeneous Reservoirs

Description: This report describes research carried out in the Department of Petroleum Engineering at Stanford University from September 1998 - September 1998 under the third year of a three-year Department of Energy (DOE) grant on the ''Prediction of Gas Injection Performance for Heterogeneous Reservoirs''. The research effort is an integrated study of the factors affecting gas injection, from the pore scale to the field scale, and involves theoretical analysis, laboratory experiments and numerical simulat… more
Date: December 20, 1999
Creator: Blunt, Martin J. & Franklin M. Orr Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and construction of septum magnets at the 7-GeV APS.

Description: The mechanical design, construction, and assembly procedure of six different septum magnet designs used in the Advanced Photon Source (APS) facility will be described. This will include a positron accumulator ring (PAR) AC septum magnet, a synchrotrons thin injection septum AC thin and thick extraction septa, and storage ring AC thick and thin injection septum magnets. Design parameters, material selection, assembly procedures, and operational results will be presented.
Date: April 20, 1999
Creator: Gorski, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

POW3-workhorse powder diffractometer-reference instrument WBS 1.7.3.

Description: POW3 provides rapid data collection while maintaining reasonably good resolution. Figure 1 provides a schematic representation of POW3, and Table 1 gives the parameters for this instrument. This is a workhorse refinement instrument for structures of modest complexity. In addition, this instrument views a cold moderator to enable long-wavelength neutrons to be used to measure long d-spacings.
Date: January 20, 1999
Creator: Crawford, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A consortium approach to glass furnace modeling.

Description: Using computational fluid dynamics to model a glass furnace is a difficult task for any one glass company, laboratory, or university to accomplish. The task of building a computational model of the furnace requires knowledge and experience in modeling two dissimilar regimes (the combustion space and the liquid glass bath), along with the skill necessary to couple these two regimes. Also, a detailed set of experimental data is needed in order to evaluate the output of the code to ensure that the… more
Date: April 20, 1999
Creator: Chang, S.-L.; Golchert, B. & Petrick, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

POW6-high-resolution/strain powder diffractometer-reference instrument WBS 1.7.11.

Description: POW6 is optimized to provide the best possible resolution at 90{degree} scattering angle for diffraction from materials in special environments (cryostats, furnaces, pressure cells, etc.) and for precision strain distribution and deformation measurements. Figure 1 provides a schematic representation of POW6, and Table 1 gives the parameters for this instrument. The instrument also provides very good resolution in backscattering.
Date: January 20, 1999
Creator: Crawford, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SCD1-general-purpose single-crystal diffractometer-reference instrument WBS 1.7.5.

Description: SCD1 is intended to satisfy most needs for small-unit-cell single-crystal diffraction. Figure 1 provides a schematic representation of SCD1, and Table 1 gives the parameters for this instrument. This instrument will provide much faster data collection than any existing time-of-flight single-crystal diffractometer. The goal is data collection times of 1 hour for a simple structure and 1 day for a medium-complexity structure.
Date: January 20, 1999
Creator: Crawford, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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