UNT Libraries Government Documents Department - 182 Matching Results

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An 805 MHz disk and washer structure for the Fermilab Linac Upgrade

Description: The Linac Upgrade program, a portion of the Tevatron Upgrade, calls for increasing the energy of the existing 200 MeV, 201.25 MHz linac to 400 MeV in order to reduce beam emittance degradation in the Booster. This is to be accomplished by replacing the last four Alvarez linac tanks with more efficient, higher gradient 805 MHz linac structure. One of the linac structures currently under study in a collaboration between Fermilab and SAIC is the Disk-and-Washer accelerating structure with bi-perio… more
Date: October 3, 1988
Creator: Moretti, A.; Young, D.; Lee, G.; Mills, F. E.; Zhou, P.; Swenson, D. A. et al.
Item Type: Refine your search to only Article
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Absorption of carbon dioxide in waste tanks

Description: Air flow rates and carbon dioxide concentrations of air entering and exiting eight H-Area waste tanks were monitored for a period of one year. The average instanteous concentration of carbon dioxide in air is within the range reported offsite, and therefore is not affect by operation of the coal-fired power plant adjacent to the tank farm. Waste solutions in each of the tanks were observed to be continuously absorbing carbon dioxide. The rate of absorption of carbon dioxide decreased linearly w… more
Date: September 3, 1987
Creator: Hobbs, D. T.
Item Type: Refine your search to only Report
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Adjoint sensitivity analysis of a thermal hydraulic system undergoing phase change due to boiling transition. [BWR]

Description: Sensitivity analysis of practical problems can be performed systematically and very efficiently by using adjoint functions. In areas of interest to nuclear reactors, this efficiency has been amply demonstrated on several widely used codes for neutronics and/or thermal hydraulic calculations. Applications of the adjoint method of sensitivity analysis to models involving phase transitions, where non-differentiability occurs, do not seem to have been reported to date. The purpose of this paper is … more
Date: June 3, 1984
Creator: Cacuci, D. G.; Wacholder, E.; Kaizerman, S. & Tomerian, N.
Item Type: Refine your search to only Article
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AFR spent-fuel-storage program. Technical progress report, April 1981-June 1981

Description: Work on this project is focused on developing design and licensing information for the model facility. Final deliverables were prepared this period to submit to DOE for the licensing and high-density rack sub-tasks. DOE revised and reduced the scope of the 1981 AFR contract in June of 1981. Work is progressing satisfactorily to close out the remaining tasks under the revised scope by September 30, 1981.
Date: August 3, 1981
Item Type: Refine your search to only Report
open access

Arms Shipments to Iran

Description: This report provides background and examines key questions in regards to the shipments of arms to Iran and the subsequent diversion of funds to Nicaraguan guerrillas by the Reagan Administration.
Date: April 3, 1987
Creator: Preece, Richard M.
Item Type: Refine your search to only Report
open access

ATA injector-gun calculations

Description: ATA is a pulsed, 50 ns 10 KA, 50 MeV linear induction electron accelerator at LLNL. The ETA could be used as an injector for ATA. However the possibility of building a new injector gun for ATA, raised the question as to what changes from the ETA gun in electrode dimensions or potentials, if any, should be considered. In this report the EBQ code results for the four electrode configurations are reviewed and an attempt is made to determine the geometrical scaling laws appropriate to these ETA typ… more
Date: August 3, 1981
Creator: Paul, A.C.
Item Type: Refine your search to only Report
open access

Atomic and molecular surface and volume processes in the analysis of negative hydrogen discharges

Description: The principal source of negative ion generation in hydrogen discharges is now recognized to be low-energy electron attachment to H/sub 2/(/nu//prime//prime/) molecules excited to the middle portion of the vibrational spectrum. Electron excitation processes are generally taken to be the principal source of H/sub 2/(/nu//prime//prime/) generation, with high-energy excitations through the singlet spectrum being the principal excitation process populating the active portion of the vibrational spect… more
Date: July 3, 1989
Creator: Hiskes, J.R. & Karo, A.M.
Item Type: Refine your search to only Article
open access

Balanced Budget and Spending Limitations: Proposed Constitutional Amendments in the 97th Congress

Description: Expenditures and revenue limitation proposals link Federal spending and taxation to some measure of economic performance, such as the rate of economic growth or percentage levels of GNP or national income. The report presents this issue brief reviews, the various approaches to balance the budget and to impose spending limitations offered as constitutional amendments’ in the 97 congress.
Date: April 3, 1981
Creator: Schick, Allen & Strickland, Daniel P.
Item Type: Refine your search to only Report
open access

Beam loss by collimation in a neutralizer duct

Description: Beam fractions lost by collimation in a neutralizer duct are computed in x-x' phase space by using three examples of slab beam distributions under a broad range of duct dimensions, beam half-widths, and beam divergences. The results can be used to design compact neutralizers and to specify beam requirements. The computer code ILOST can be used under a broad range of beam conditions to compute the fraction lost by collimation.
Date: April 3, 1980
Creator: Hamilton, G.W. & Willmann, P.A.
Item Type: Refine your search to only Report
open access

Calculated nuclide compositions and gamma-ray exposure rates for fallout from the HARRY, SMOKY, and ANNIE events

Description: The results of computer calculations of the nuclide composition and associated external gamma-ray exposure rates for fallout from the HARRY, SMOKY, and ANNIE events are documented. The fission product distribution is calculated for each event with the appropriate neutron spectrum and the fractions of fissions due to each fissionable material. Also calculated are the total number of microcuries per square meter and the gamma-ray exposure rates (mR/h, 1 meter above ground level) for the 152 fissi… more
Date: March 3, 1981
Creator: Hicks, Harry G.
Item Type: Refine your search to only Report
open access

CAMAC serial highway interface for the LSI-11

Description: A CAMAC Serial Highway Interface has been designed for the Local Control and Instrumentation System of the Mirror Fusion Test Facility. There are over 50 distinguishable systems in the facility, each of which consists of the LSI-11 computer, fiber optic communication links, and the CAMAC system. The LSI-11 computer includes a 32k memory, serial modem interface and the CAMAC Serial Highway Interface.
Date: April 3, 1980
Creator: Lau, N.H.
Item Type: Refine your search to only Article
open access

China-U.S.-Soviet Relations

Description: In 1979, a time of clear downturn in U.S.-Soviet relations over such sensitive issues as SALT, Soviet troops in Cuba, and the Soviet invasion of Afghanistan, the Carter Administration moved ahead with a series of measures designed to improve relations with Moscow's major adversary in Asia, the Peoples Republic of China (P.R.C.). The purpose of this report is to provide background for and summarize current developments in U.S. - People’s Republic of China (PRC) relations, including current and p… more
Date: December 3, 1981
Creator: Sutter, Robert G.
Item Type: Refine your search to only Report
open access

CO/sub 2/-laser polishing of fused silica surfaces for increased laser damage resistance at 1. 06. mu. m

Description: Bare fused silica surfaces were prepared by subjecting the mechanically polished surface to a rastered cw CO/sub 2/ laser beam. Analysis shows that this processing causes: (a) removal of a uniform layer of fused silica; and (b) a probable re-fusing or healing of existing subsurface fractures. The fused silica removal rate is found to be a function of the laser intensity and scan rate. These surfaces are seen to have very low scatter and to be very smooth. In addition, they have exhibited entran… more
Date: April 3, 1980
Creator: Temple, P. A.; Milam, D. & Lowdermilk, W. H.
Item Type: Refine your search to only Article
open access

Combustibility of tetraphenylborate solids

Description: Liquid slurries expected under normal in-tank processing (ITP) operations are not ignitible because of their high water content. However, deposits of dry solids from the slurries are combustible and produce dense, black smoke when burned. The dry solids burn similarly to Styrofoam and more easily than sawdust. It is the opinion of fire hazard experts that a benzene vapor deflagration could ignite the dry solids. A tetraphenylborate solids fire will rapidly plug the waste tank HEPA ventilation f… more
Date: May 3, 1989
Creator: Walker, D. D.
Item Type: Refine your search to only Report
open access

Combustibility of tetraphenylborate solids

Description: Liquid slurries expected under normal in-tank processing (ITP) operations are not ignitible because of their high water content. However, deposits of dry solids from the slurries are combustible and produce dense, black smoke when burned. The dry solids burn similarly to Styrofoam and more easily than sawdust. It is the opinion of fire hazard experts that a benzene vapor deflagration could ignite the dry solids. A tetraphenylborate solids fire will rapidly plug the waste tank HEPA ventilation f… more
Date: May 3, 1989
Creator: Walker, D. D.
Item Type: Refine your search to only Report
open access

Compact X-Ray Lasers in the Laboratory

Description: Compact x-ray lasers in the laboratory can be produced with ultrahigh gradient rf linacs based on recent advances in linac technology by an SLAC-LLNL-LBL collaboration and on the development of bright, high current electron sources by BNL and LANL. The GeV electron beams generated with such accelerators can be converted to soft x rays in the range of 2--10 nm by passage through short period, high field strength wigglers. Alternatively, the beam can pump a low density dielectric to produce x ray… more
Date: October 3, 1988
Creator: Barletta, W. A.
Item Type: Refine your search to only Article
open access

Comparative analysis of coal use options for reducing the dependence of utilities on imported oil

Description: The President and the Congress are finalizing National Goals to reduce the Nation's dependence on imported oil. A key element of these goals is the conversion of utilities from oil-fired to coal-fired to yield an import reduction of 0.75 MBD by 1990. Since these utilities already exist at fixed locations, this element of the National Goals has the focus of Appolo, Polaris, Minuteman and other major successful programs. It is indicated, therefore, that the program development and management tech… more
Date: January 3, 1980
Creator: Eggers, Jr, A J
Item Type: Refine your search to only Report
open access

Comparison between calculation and measurement of energy deposited by 800 MeV protons

Description: The High Energy Transport Code, HETC, was obtained from the Radiation Shielding Information Center (RSIC) at Oak Ridge National Laboratory and altered as necessary to run on a CDC 7600 using the LTSS software in use at LLNL. HETC was then used to obtain calculated estimates of energy deposited, for comparison with a series of benchmark experiments done by LLNL. These experiments used proton beams of various energies incident on well-defined composite targets in good geometry. In this report, tw… more
Date: April 3, 1980
Creator: Loewe, W.E.
Item Type: Refine your search to only Report
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