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Bubble chamber spectroscopy for chemical analysis: A new concept

Description: A new technique for the detection of trace concentrations of molecules in solution has been developed. This system utilizes the amplification characteristics of a bubble chamber in which energy deposition from laser absorption is monitored. In the experimental set-up, a trace quantity of solute is introduced into liquid propane that is contained in a small (10 ml) stainless steel cell at 120 psi. The propane is superheated by sudden reduction of the cell pressure. Before wall nucleated boiling … more
Date: February 1, 1995
Creator: Atencio, J. H.; Luo, Xin; McCreary, E. I.; McCown, A. W. & Sander, R. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recipes for high resolution time-of-flight detectors

Description: The authors discuss the dynamics, construction, implementation and benefits of a time-of-flight (TOF) detector with count rates an order of magnitude higher and resolution three to four times better than that obtainable with a surface barrier detector. The propose use of design criteria for a time-of-flight detector is outlined, and the determination of a TOF detector`s total relative timing error and how this value determines the mass resolution are illustrated using a graphical analysis. They… more
Date: January 1, 1995
Creator: Anz, S. J.; Felter, T. E.; Hess, B. V.; Daley, R. S.; Roberts, M. L. & Williams, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Acquisition and reduction of data obtained from tank 101-SY in-situ ball rheometer

Description: Development of the ball rheometer to measure rheological properties and density of the waste in Hanford Tank 241-SY-101 will be completed around September 1994. This instrument is expected to provide the first-of-its-kind in-situ measurements of the fluid properties of the waste contained within this tank. A mixer pump has been installed in this tank, and this pump has been very successful at mitigating the flammable gas problem associated with Tank 101-SY. The ball rheometer will serve as a di… more
Date: February 1, 1995
Creator: Shepard, C. L.; Chieda, M. A.; Kirihara, L. J.; Phillips, J. R.; Shekarriz, A.; Terrones, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A New Target Concept for Production of Slow Positrons

Description: Slow positrons in the energy range up to a few keV are useful for material sciences and surface studies. The Advanced Photon Source (APS) linear accelerator (linac) was designed to produce 8-mA of 450-MeV positrons. A 200-MeV, 1.7-Ampere electron beam impinges on a 7-mm-thick (2 radiation lengths) tungsten target, resulting in bremsstrahlung pair production of electrons and positrons. The existing target was optimized for high energy positron production, and most slow positrons produced by the … more
Date: January 1, 1995
Creator: Qian, Y. L & White, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hydrogen Evolution and Sludge Suspension During the Preparation of the First Batch of Sludge at the Savannah River Site

Description: The first batch of High Level Radioactive Sludge for the Defense Waste Processing Facility is being prepared in two 4.9 million liter waste tanks. The preparation involves removing water soluble salts by washing (water addition, sludge suspension, settling and decantation). Sludge suspension is accomplished using long shafted slurry pumps that are mounted on rotating turntables. During the sludge suspension runs in 1993 and 1994, the slurry pumps` cleaning radius was determined to be less than … more
Date: March 1, 1995
Creator: Hay, M. S. & Lee, E. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Two Alternate High Gradient Quadrupoles; An Upgraded Tevatron IR and A"Pipe" Design

Description: With the U.S. cancellation of the SSC project, the only large approved hadron accelerator project is CERN's LHC. One of the more critical elements in the performance of a collider is the quadrupole lens at the beam collision points. These quadrupoles, usually referred to as the 'insertion quads' normally form a set of triplets around the interaction region. Their focal power directly affects the luminosity available at the crossing point In order to achieve as high a gradient as possible, the C… more
Date: April 1, 1995
Creator: McInturff, A. D.; van Oort, J. M. & Scanlan, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Study of Water Reinjection on the Kamojang Geothermal Reservoir Performance, Indonesia

Description: A reservoir simulation model study was developed to investigate effects of water reinjection into the performance of Kamojang geothermal field. Several cases including the existing injection wells and rates, the effect of injection rates, location and depth of proposed injection wells were run to study the temperature, pressure and fluid distribution in the reservoir and its effect into the reservoir and production performance for 30 years of prediction. The results show that the reservoir pres… more
Date: January 1, 1995
Creator: Darwis, R. S.; Tampubolon, T.; Simatupang, R. & Asdassah, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improving Water Loop Heat Pump Performance by Using Low Temperature Geothermal Fluid

Description: Water-loop heat pump (WLHP) systems are an important option for space conditioning of commercial buildings. They provide the opportunity of saving energy through heat recovery and thermal balancing when heating and cooling occur simultaneously. WLHP systems typically operate with loop water temperature between 16 C and 32 C. When cooling loads dominate, loop water temperatures are maintained below 32 C by rejecting excess heat with a cooling tower. When heating dominates, loop water temperature… more
Date: January 1, 1995
Creator: Xinguo, Li
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Automatic History Matching of Geothermal Field Performance

Description: We have developed inverse modeling capabilities for the multiphase multicomponent numerical simulator TOUGH2 to facilitate automatic history matching and parameter estimation based on data obtained during exploitation of geothermal fields. The ITOUGH2 code allows one to estimate TOUGH2 input parameters based on any type of observation for which a corresponding TOUGH2 output can be calculated. Furthermore, a detailed residual and error analysis is performed, and the uncertainty of model predicti… more
Date: January 1, 1995
Creator: Finsterle, S. & Pruess, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

User`s guide to EAGLES Version 1.1: An electric- and gasoline-vehicle fuel-efficiency software package

Description: EAGLES is an interactive microcomputer software package for the analysis of fuel efficiency in electric-vehicle (EV) applications or the estimation of fuel economy for a gasoline vehicle. The principal objective of the EV analysis is to enable the prediction of EV performance on the basis of laboratory test data for batteries. The EV model included in the software package provides a second-by-second simulation of battery voltage and current for any specified vehicle velocity/time or power/time … more
Date: January 1, 1995
Creator: Marr, W.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sonic enhanced ash agglomeration and sulfur capture. Technical progress report, January 1995--March 1995

Description: This program is focused on the process for bimodal ash agglomeration and simultaneous sulfur capture for the development of coal fired combustion gas turbines. The process also accommodates injection of alkali gettering materials. During this period, further dismantling of the existing bimodal test unit was performed. The design of a revised process development unit and hot gas cleanup unit have been completed.
Date: July 1, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LLNL Electrical Safety Committee Summary report for 1993 and 1994

Description: The ESC is presently organized with three subcommittees: Guidelines and Regulations, Programs and Training, and Performance Measurement and Analysis. Current membership is attached for information, as well as the charters of the three subcommittees. The committee at large meets once a quarter, the Executive Committee, comprised of the Committee Chair, the Executive Secretary and the Subcommittee Chairs meets twice quarterly, and the subcommittees meet once or twice per month. Minutes of meeting… more
Date: March 1, 1995
Creator: Niven, W. A. & Trost, S. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensing liquid properties with shear-mode resonator sensors

Description: Liquid properties are measured from the changes they induce in the resonant frequency and damping of thicknessshear mode quartz resonators. A smooth-surfaced resonator viscously entrains the contacting fluid and responds to the density-viscosity product. Separation of density and viscosity is accomplished using two devices: one with a smooth surface and one with a corrugated surface that traps fluid. By observing the difference in stored and dissipated energies in the contacting fluid, its non-… more
Date: June 1, 1995
Creator: Martin, S. J.; Cernosek, R. W. & Spates, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Technical status of the Dish/Stirling Joint Venture Program

Description: Initiated in 1991; the Dish/Stirling Joint Venture Program (DSJVP) is a 5-year, $17.2 million joint venture which is funded by Cummins Power Generation, Inc. (CPG) of Columbus, Indiana and the United States Department of Energy`s (DOE) Solar Thermal and Biomass Power Division. Sandia National Laboratories administers and provides technical management for this contract on the DOE`s behalf. In January, 1995; CPG advanced to Phase 3 of this three-phase contract. The objective of the DSJVP is to de… more
Date: June 1, 1995
Creator: Bean, John R. & Diver, Richard B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Particulation in jets from free-form hemispherical shaped charges with copper liners

Description: Particulation in free-form hemispherical shaped charge jets is considerably different from that in conical shaped charge jets. From the analysis of the particulation data for 23 experiments covering ten free-form hemi designs with copper liners, it is concluded that jets with higher convergence pressures have delayed particulation, sometimes by as much as a factor of two. Breakup is also found to be design dependent, with free-form hemis have delayed breakup compared with cones. Also, in going … more
Date: May 1, 1995
Creator: Simonson, S. C., III; Haselman, L. C., Jr. & Breithaupt, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HRB-22 preirradiation thermal analysis

Description: This report describes the preirradiation thermal analysis of the HRB-22 capsule designed for irradiation in the removable beryllium (RB) position of the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). CACA-2 a heavy isotope and fission product concentration calculational code for experimental irradiation capsules was used to determine time dependent fission power for the fuel compacts. The Heat Engineering and Transfer in Nine Geometries (HEATING) computer code, versio… more
Date: May 1, 1995
Creator: Acharya, R. & Sawa, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The insensitive high explosive triaminotrinitrobenzene (TATB): Development and characterization, 1888 to 1994

Description: Assembled in this report are data and references on TATB and its formulations from its first synthesis in 1888 to 1994. This compilation includes sections on synthesis and preparation, analytical methods, properties, performance, aging and compatibility, and on safety. The information is arranged in chronological order within each section. A bibliography rounds out the report.
Date: August 1, 1995
Creator: Dobratz, B.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimizing small wind turbine performance in battery charging applications

Description: Many small wind turbine generators (10 kW or less) consist of a variable speed rotor driving a permanent magnet synchronous generator (alternator). One application of such wind turbines is battery charging, in which the generator is connected through a rectifier to a battery bank. The wind turbine electrical interface is essentially the same whether the turbine is part of a remote power supply for telecommunications, a standalone residential power system, or a hybrid village power system, in sh… more
Date: May 1, 1995
Creator: Drouilhet, S.; Muljadi, E.; Holz, R. & Gevorgian, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulation of the part-load behavior of a 30 MWe SEGS plant

Description: The part-load behavior of a typical 30-MWe SEGS (solar electric generating systems) plant was studied using a detailed thermodynamic model. As part of this analysis, a new solar field model was derived, based on measurement results of an LS-2 Collector and accounting for various conditions of receiver tubes, lost mirrors and measured reflectivity. A comparison was made of the model results to real plant conditions for a winter and summer day in order to test the accuracy of the model. The effec… more
Date: June 1, 1995
Creator: Lippke, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physics at BNL mini-kaon

Description: The BNL AGS is currently producing about 3{mu}A of 24 GeV protons with {approximately} 40% duty factor in slow extracted beam running. Proposals for further upgrading the accelerator are under discussion. These can produce intensities of 5.4-20{mu}A, with duty factors ranging up to nearly 100%. Such improvements provide a range of new opportunities for K and other experiments. I discuss a few such opportunities.
Date: July 1, 1995
Creator: Littenberg, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EBR-II secondary sodium loop Plugging Temperature Indicator control system upgrade

Description: The Experimental Breeder Reactor II (EBR-II) secondary sodium coolant loop Plugging Temperature Indicator (PTI) control system was upgraded in 1993 to a real-time computer based system. This was done to improve control, to remove obsolete and high maintenance equipment, and to provide a graphical CRT based operator interface. A goal was to accomplish this inexpensively using small, reliable computer and display hardware with a minimum of purchased software. This paper describes the PTI system, … more
Date: June 1, 1995
Creator: Carlson, R.B. & Gehrman, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optimization of the gas turbine-modular helium reactor using statistical methods to maximize performance without compromising system design margins

Description: This paper describes a statistical approach for determining the impact of system performance and design uncertainties on power plant performance. The objectives of this design approach are to ensure that adequate margin is provided, that excess margin is minimized, and that full advantage can be taken of unconsumed margin. It is applicable to any thermal system in which these factors are important. The method is demonstrated using the Gas Turbine Modular Helium Reactor as an example. The quanti… more
Date: July 1, 1995
Creator: Lommers, L. J.; Parme, L. L. & Shenoy, A. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance comparison of streak camera recording systems

Description: Streak camera based diagnostics are vital to the inertial confinement fusion program at Sandia National Laboratories. Performance characteristics of various readout systems coupled to an EGG-AVO streak camera were analyzed and compared to scaling estimates. The purpose of the work was to determine the limits of the streak camera performance and the optimal fielding conditions for the Amador Valley Operations (AVO) streak camera systems. The authors measured streak camera limitations in spatial … more
Date: July 1, 1995
Creator: Derzon, M. & Barber, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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