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Considerations of bunch-spacing options for multi-bunch operation of the Tevatron Collider

Description: This discussion will consider a number of points relevant to limitations, advantages and disadvantages of various arrangements of bunches in the Tevatron proton-antiproton collider. The considerations discussed here will be limited to: (a) bunch spacing symmetry and relation to the relative luminosity at B0 and D0 and the beam-beam interaction with separated beams; (b) bunch spacing constraints imposed by Main Ring RF coalescing and the optics of beam separation at B0 and D0; and (c) bunch spac… more
Date: December 14, 1989
Creator: Dugan, G.
Partner: UNT Libraries Government Documents Department
open access

Enzymatic desulfurization of coal

Description: Our experimental approach focuses on the use of enzymes which catalyze the addition of oxygen to organic compounds., In tailoring the application of these enzymes to coal processing, we are particularly interested in ensuring that oxidation occurs at sulfur and not at carbon-carbon bonds. Previous studies with DBT have shown that the reaction most frequently observed in microbial oxidative pathways is one in which DBT is oxidized at ring carbons. These reactions, as we have said, are accompanie… more
Date: December 14, 1989
Creator: Boyer, Y.N.; Crooker, S.C.; Kitchell, J.P. & Nochur, S.V.
Partner: UNT Libraries Government Documents Department
open access

Scintillating fiber ribbon --- tungsten calorimeter

Description: We describe an ultra-high density scintillating fiber and tungsten calorimeter used as an active beam-dump for electrons. Data showing the calorimeter response to electrons with momenta between 50 and 350 GeV/c are presented. 9 figs.
Date: July 14, 1989
Creator: Bross, A.; Crisler, M.; Kross, B. & Wrbanek, J.
Partner: UNT Libraries Government Documents Department
open access

Electrorefining cell evaluation

Description: Operational characteristics of the LANL electrorefining cell, a modified LANL electrorefining cell, and an advanced electrorefining cell (known as the CRAC cell) were determined. Average process yields achieved were: 75% for the LANL cell, 82% for the modified LANL cell, and 86% for the CRAC cell. All product metal from the LANL and modified LANL cells was within foundry specifications. Metal from one run in the CRAC cell exceeded foundry specifications for tantalum. The LANL and modified LANL … more
Date: April 14, 1989
Creator: Bronson, M. C. & Thomas, R. L.
Partner: UNT Libraries Government Documents Department
open access

Auxiliary plasma heating and fueling models for use in particle simulation codes

Description: Computational models of a radiofrequency (RF) heating system and neutral-beam injector are presented. These physics packages, when incorporated into a particle simulation code allow one to simulate the auxiliary heating and fueling of fusion plasmas. The RF-heating package is based upon a quasilinear diffusion equation which describes the slow evolution of the heated particle distribution. The neutral-beam injector package models the charge exchange and impact ionization processes which transfe… more
Date: March 14, 1989
Creator: Procassini, Richard J. & Cohen, Bbruce I.
Partner: UNT Libraries Government Documents Department
open access

Enzymatic desulfurization of coal. Sixth quarterly report, September 16--December 15, 1989

Description: Our experimental approach focuses on the use of enzymes which catalyze the addition of oxygen to organic compounds., In tailoring the application of these enzymes to coal processing, we are particularly interested in ensuring that oxidation occurs at sulfur and not at carbon-carbon bonds. Previous studies with DBT have shown that the reaction most frequently observed in microbial oxidative pathways is one in which DBT is oxidized at ring carbons. These reactions, as we have said, are accompanie… more
Date: December 14, 1989
Creator: Boyer, Y. N.; Crooker, S. C.; Kitchell, J. P. & Nochur, S. V.
Partner: UNT Libraries Government Documents Department
open access

Gravimelt Process (Molten-Caustic-Leaching). Quarterly report, January--March 1989

Description: The objective of this project is to construct and operate an integrated test circuit for the Molten-Caustic-Leaching (Gravimelt) process for desulfurization and demineralization of coal to prove process economics assumptions, deliver product coal and to test process conditions aimed at significantly lowering costs. The test circuit consists of six unit operations which together provide a continuous system for leaching coal and regenerating the reactant. These units are: (a) a kiln for reacting … more
Date: April 14, 1989
Partner: UNT Libraries Government Documents Department
open access

Environmental quality control report. [Semiannual] report, July--December 1988

Description: This report presents the details of the Mound Laboratory EPA-NPDES Quality Assurance Program, the DOE Quality Assessment Program Results, Proficiency Environmental Testing Program and Plutonium in Urine Quality Control for 1988.
Date: April 14, 1989
Creator: Bishop, C. T.
Partner: UNT Libraries Government Documents Department
open access

Energy related studies utilizing microcline thermochronology

Description: Using Microcline Thermochronology (MTC), we have investigated the hydrothermal maturity of the Salton Sea Geothermal Field, potential or hydrocarbon maturation associated with heating due to ridge subduction beneath accretionary prism sediments, developed a single crystal dating system which has proven to greatly enhance interpretations regarding MTC, and also have begun to develop sound theoretical and experimental techniques which truly revolutionize our understanding of argon systematics in … more
Date: November 14, 1989
Creator: Harrison, T.M.
Partner: UNT Libraries Government Documents Department
open access

Photodecomposition of energetic nitro compounds

Description: The photodecomposition of energetic nitrocompounds depends on the excitation energy, the light intensity which determines the mono-, bi- or multiphotonic character of the initial process and their gaseous, liquid or solid state. The initial processes of the photodecomposition of nitromethane and nitroalcanes are reviewed and their relevance to the initiation of energetic nitrocompounds detonation is discussed. The case of nitramines (dimethylnitramine and tutorial) is also briefly introduced.
Date: March 14, 1989
Creator: Mialocq, J.C.
Partner: UNT Libraries Government Documents Department
open access

Building 774A mini-melter restoration

Description: Large scale mechanical improvements were made on the 100th scale glass melter in building 774A following a shutdown in November, 1988. The circumstances regarding that shutdown were reported by P.M. Allen in DPST-89-345. By request, the Mechanical Development Group assumed responsibility for the work on SRL Service order DS-87042. This report describes the changes which were made, their purpose, and observations as to their effectiveness after approximately 4 weeks of operating with the improve… more
Date: April 14, 1989
Creator: Mensink, D. L.
Partner: UNT Libraries Government Documents Department
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