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DYNAVAC: a transient-vacuum-network analysis code

Description: This report discusses the structure and use of the program DYNAVAC, a new transient-vacuum-network analysis code implemented on the NMFECC CDC-7600 computer. DYNAVAC solves for the transient pressures in a network of up to twenty lumped volumes, interconnected in any configuration by specified conductances. Each volume can have an internal gas source, a pumping speed, and any initial pressure. The gas-source rates can vary with time in any piecewise-linear manner, and up to twenty different tim… more
Date: July 8, 1980
Creator: Deis, G.A.
Partner: UNT Libraries Government Documents Department
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Initial evaluation of photographic data of F- and H-Area seepage basin outcrops

Description: Photographic data for the Savannah River Plant (SRP) were reviewed for 1961 through 1987 to determine the value of this photography in estimating the timing and extent of the F- and H-Area seepage basin outcrops along the upper Four Mile Creek floodplain. In excess of 15,000 frames of photography of the SRP were reviewed. The quality of the photography varied widely and included panchromatic (black and white), natural color, and false color infrared. Altitudes of the photography ranged from 2,0… more
Date: February 8, 1988
Creator: Mackey, H. E., Jr.
Partner: UNT Libraries Government Documents Department
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Model of beam head erosion

Description: An analytical model of beam head dynamics is presented, leading to an estimate of the erosion rate due to the combined effects of Ohmic dissipation and scattering. Agreement with the results of a computer simulation and detailed one-dimensional computations is good in all respects except for the scaling of the erosion rate with net current.
Date: August 8, 1980
Creator: Lee, Edward P.
Partner: UNT Libraries Government Documents Department
open access

Final focus nomenclature

Description: The formal names and common names for all devices in the final focus system of the SLC are listed. The formal names consist of a device type designator, microprocessor designator, and a four-digit unit number. (LEW)
Date: August 8, 1986
Creator: Erickson, R.
Partner: UNT Libraries Government Documents Department
open access

Milliwatt generator heat source. Progress report, July-December 1981

Description: As part of the Milliwatt Generator (MWG) Program, a second series of pressure burst capsules welded offsite was tested; the resulting data indicate that the welds are very similar to those in the first series of capsules. Sufficient hardware was fabricated to meet all scheduled commitments. To provide a unit for feasibility testing, a heat source clad with Hastelloy C was reclad with Inconel 600. Forming development tests on Inconel 600 were conducted with favorable results. A QAS-3 survey was … more
Date: April 8, 1982
Creator: Mershad, E.A.
Partner: UNT Libraries Government Documents Department
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Demonstration of energy conservation for multi-deck board dryers. Phase I. Final report

Description: A study was made to determine the feasibility of recover and reuse of low level heat from the exhausts of multi-deck dryers used to dry boards in the building materials industry. There are approximately 1000 dryers of this type in the USA, with no heat recovery equipment. These dryers are used in the manufacture of: roof insulation board, ceiling tile and panel stock, wood fiber sheathing, gypsum board, and veneer plywood. Pilot scale tests and analyses show that heat recovery designs utilizing… more
Date: February 8, 1980
Partner: UNT Libraries Government Documents Department
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Laboratory-scale evaluations of alternative plutonium precipitation methods

Description: Plutonium(III), (IV), and (VI) carbonate; plutonium(III) fluoride; plutonium(III) and (IV) oxalate; and plutonium(IV) and (VI) hydroxide precipitation methods were evaluated for conversion of plutonium nitrate anion-exchange eluate to a solid, and compared with the current plutonium peroxide precipitation method used at Rocky Flats. Plutonium(III) and (IV) oxalate, plutonium(III) fluoride, and plutonium(IV) hydroxide precipitations were the most effective of the alternative conversion methods t… more
Date: February 8, 1984
Creator: Martella, L. L.; Saba, M. T. & Campbell, G. K.
Partner: UNT Libraries Government Documents Department
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Development of copper sulfide/cadmium sulfide thin-film solar cells

Description: The most important accomplishments during this period were to demonstrate and to elucidate further the complex effects that occur during the aging of Cu/sub 2/S/CdS thin-film solar cells in flowing wet oxygen. There are two distinct effects. At constant illumination, the short-circuit current of cells aged at room temperature consistently decreases with time. The second effect, related to diode opposing current, is more involved and may result from several competing mechanisms. Over the short t… more
Date: March 8, 1982
Creator: Szedon, J. R.; Biter, W. J. & Dickey, H. C.
Partner: UNT Libraries Government Documents Department
open access

Equipment qualification research program: program plan

Description: The Lawrence Livermore National Laboratory (LLNL) under the sponsorship of the US Nuclear Regulatory Commission (NRC) has developed this program plan for research in equipment qualification (EQA). In this report the research program which will be executed in accordance with this plan will be referred to as the Equipment Qualification Research Program (EQRP). Covered are electrical and mechanical equipment under the conditions described in the OBJECTIVE section of this report. The EQRP has two p… more
Date: June 8, 1982
Creator: Dong, R.G. & Smith, P.D.
Partner: UNT Libraries Government Documents Department
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Total pion cross section measurements. Annual progress report, January 1, 1979-December 31, 1979

Description: The principal effort has been devoted to the data analysis for the pion-nucleus total cross section experiment. Forward scattering amplitudes have been obtained for ..pi..+- mesons on Al, /sup 40/Ca, Cu, Sn, Ho, and Pb. These results are given. Work is continuing on the data reduction for the remaining targets.
Date: February 8, 1980
Creator: Jakobson, M. J. & Jeppesen, R. H.
Partner: UNT Libraries Government Documents Department
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Laboratory procedures used in the hot corrosion project

Description: The objective of the Hot Corrosion Project in the LLNL Metals and Ceramics Division is to study the physical and chemical mechanisms of corrosion of nickel, iron, and some of their alloys when these metals are subjected to oxidizing or sulfidizing environments at temperatures between 850 and 950/sup 0/C. To obtain meaningful data in this study, we must rigidly control many parameters. Parameters are discussed and the methods chosen to control them in this laboratory. Some of the mechanics and m… more
Date: April 8, 1980
Creator: Jeys, T.R.
Partner: UNT Libraries Government Documents Department
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EPFL (Swiss) fusion-fission hybrid experiment. Progress report, November 1, 1981-January 31, 1982

Description: The trip provided an opportunity for extensive discussions with the staff of the Institut de Genie Atomique (IGA) of the Ecole Polytechnique Federale de Lausanne (EPFL). The discussions covered both the planning of the first series of experiments to be performed in the Hybrid Experiment (hereafter referred to as LOTUS) and the status of calculational work being performed at the University of Washington in support of the LOTUS project.
Date: February 8, 1982
Creator: Woodruff, G.L.
Partner: UNT Libraries Government Documents Department
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Preliminary vibration analysis of magnet/support system for 7-GeV APS storage ring

Description: The storage ring quadrupoles, sextupoles, and correction magnets will be mounted on a common girder approximately 4.0 m long. The rigid girder, in turn, is mounted on three five-ton jacks, each of which is mounted on a pedestal that is grouted and bolted to the floor. For this preliminary analysis, we will assume that the girder has a weight per unit length of 100 lb/ft and a bending stiffness that is significantly greater than the vertical stiffness provided by the pedestal (jack-screw) suppor… more
Date: May 8, 1989
Creator: Wambsganss, M.W.
Partner: UNT Libraries Government Documents Department
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Accelerator Division satellite refrigerator compressor system and gas purification procedures

Description: Following construction and prior to commissioning a compressor system, it is necessary to test the piping, fill the purification vessels with adsorbents and remove all contaminants. The technical papers incoprorated in this report give detailed procedures for those tasks. (GHT)
Date: September 8, 1983
Creator: Pallaver, C.B. & Satti, J.A.
Partner: UNT Libraries Government Documents Department
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Recovery of uranium-233 from a thorium breeding blanket by pyrochemical techniques

Description: We have carefully evaluated several processes that might be suitable for uranium recovery from thorium metal, and have chosen two that hold great promise. Both are simple non-aqueous methods that can readily be performed by remote means, and both require only a few simple process steps.
Date: December 8, 1982
Creator: Coops, M.S. & Knighton, J.B.
Partner: UNT Libraries Government Documents Department
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Wire grid beam-splitter for microwave diagnostics on MTX (Microwave Tokamak Experiment)

Description: A wire grid beam splitter for use in high-power microwave diagnostics is discussed. The principle application considered here is the Microwave Tokamak Experiment (140 GHz ECH using 35 ns FEL pulses of about 3 GW peak power, single pulse, with future upgrade to 250 GHz, 8 GW, 50 ns, and 5 kHz repetition rate). The theory of wire grids of infinite extent and excited by a uniform plane wave is extended to consider grids of finite extent and excited by field having a Gaussian distribution. Design c… more
Date: March 8, 1989
Creator: Lorbeck, J.A.
Partner: UNT Libraries Government Documents Department
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Subcycle-specific emergency cooling limits

Description: Assembly power limits are prescribed for each reactor charge so that the Emergency Cooling System (ECS) will prevent core damage from exceeding specified damage limits during a postulated loss-of-coolant (LOCA) or loss-of-pumping (LOPA) accident. Generic assembly power limits which include a 10% uncertainty factor have been determined for the Mark 16B-31 charge. However, future power limits will not be based on the values, because a new damage model is being developed. These limits can be deter… more
Date: December 8, 1986
Creator: Giess, M J
Partner: UNT Libraries Government Documents Department
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Synchrotron radiation shielding for SLC alcove electronics

Description: The question has been raised concerning where to put lead shielding to reduce the synchrotron radiation dose to the electronics in the alcoves. Assuming that the alcoves are not near a collimator, the dominant radiation source is synchrotron radiation. Previous calculations indicate that a one-centimeter-thick lead door on the alcove would provide sufficient shielding. It was proposed that a one-half-inch-thick lead door be used (the next available thickness). The door would be roughly 36 squar… more
Date: March 8, 1985
Creator: McCall, R.C.; Ipe, N.E. & Shore, R.A.
Partner: UNT Libraries Government Documents Department
open access

RYLLA. [X-ray transport code]

Description: This paper describes a computer code, RYLLA, which models the deposition of x-rays into thin metal slabs, and transports the resulting photoelectrons, finding the distribution of electrons leaving the slab from both the front and back surfaces. The slab must be homogeneous, but can contain a mixture of up to 5 different elements. Due to the short electron mean free path at low electron energies, RYLLA should be used only for studying thin slabs, roughly < 100 mg/cm/sup 2/ for low Z metals, and … more
Date: June 8, 1983
Creator: Hyde, R.A.
Partner: UNT Libraries Government Documents Department
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Resonant Alfven wave instabilities driven by streaming fast particles

Description: A plasma simulation code is used to study the resonant interactions between streaming ions and Alfven waves. The medium which supports the Alfven waves is treated as a single, one-dimensional, ideal MHD fluid, while the ions are treated as kinetic particles. The code is used to study three ion distributions: a cold beam; a monoenergetic shell; and a drifting distribution with a power-law dependence on momentum. These distributions represent: the field-aligned beams upstream of the earth's bow s… more
Date: May 8, 1987
Creator: Zachary, A.
Partner: UNT Libraries Government Documents Department
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Separations areas effluent treatment: The preparation of a simulated effluent for system development and testing

Description: A fundamental parameter in the design of the Effluent Treatment Facility (ETF), the effluent composition, has recently been investigated by analyzing samples from both separations areas. As a result of this characterization program, we can now project the composition of the ETF feed stream. The anticipated feed composition is presented here for the purpose of making system projections; and a formula is provided for a simulant to use in testing evaporation, filtration, and reverse osmosis (RO) e… more
Date: February 8, 1984
Creator: Ryan, J.P.
Partner: UNT Libraries Government Documents Department
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Formulas for one-dimensional local properties for molecular-dynamics simulations of shock waves

Description: Formulas are derived for the mass, momentum, and energy densities, the xx component of the pressure tensor P/sup xx/, and the x component of the heat flux Q/sup x/. The formulas relate these local properties to the masses, positions, and velocities of the constituent particles making up the system and are in a usable form for molecular-dynamics simulations without approximation. The formulas for P/sup xx/ and Q/sup x/ avoid the infinite series found in the formulas of Irving and Kirkwood.
Date: January 8, 1981
Creator: Hardy, R.J.
Partner: UNT Libraries Government Documents Department
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Characteristics of A-150 plastic-equivalent gas in A-150 plastic ionization chambers for p(66)Be(49) neutrons

Description: The evaluation of a gas mixture having an atomic composition similar to that of A-150 TE-plastic has been extended to a high energy neutron therapy beam. A-150 gas, air and methane-based TE gas were each flowed through A-150 plastic-walled ion chambers of different sizes and irradiated with p(66)Be(49) neutrons. A tentative value for anti W(A-150) of 27.3 +- 0.5 J C/sup -1/ was derived for this beam. The anti W value of the A-150 gas mixture is compared to those of methane-based TE gas and of a… more
Date: July 8, 1982
Creator: Awschalom, M.; Rosenberg, I.; Ten Haken, R. K.; Pearson, D. W.; Attix, F. H. & DeLuca, P. M.
Partner: UNT Libraries Government Documents Department
open access

Two-dimensional gas flow in an electrode assembly

Description: The interface between a source of positive or negative ions and a multichannel MEQALAC accelerator will be the Low-Energy Beam Transport (LEBT) consisting of a lattice of quadrupole focusing electrodes transporting the beam while the gas pressure is reduced from the high-pressure ion source to the low-pressure accelerator. Gas emitted from the ion source will flow through the LEBT electrode lattice to a pumping volume. It is necessary to analyze the two-dimensional gas flow to ascertain the gas… more
Date: April 8, 1980
Creator: Hamilton, G.W. & Willmann, P.A.
Partner: UNT Libraries Government Documents Department
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