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Mathematical models and illustrative results for the RINGBEARER II monopole/dipole beam-propagation code (open access)

Mathematical models and illustrative results for the RINGBEARER II monopole/dipole beam-propagation code

RINGBEARER II is a linearized monopole/dipole particle simulation code for studying intense relativistic electron beam propagation in gas. In this report the mathematical models utilized for beam particle dynamics and pinch field computation are delineated. Difficulties encountered in code operations and some remedies are discussed. Sample output is presented detailing the diagnostics and the methods of display and analysis utilized.
Date: May 24, 1982
Creator: Chambers, F.W.; Masamitsu, J.A. & Lee, E.P.
System: The UNT Digital Library
Timing and control monitor system upgrade design document. Version 4 (open access)

Timing and control monitor system upgrade design document. Version 4

This is a design document for the Timing and Control Monitor System Upgrade Project. This project is intended to provide a replacement system for the existing user Encoder Monitor Systems and Varian 72 Control Room computer systems. All of these systems reside at the Nevada Test Site. The function of the T and C Monitor System is to gather real-time statistics and data on user defined key variables from control, communication, data acquistion systems, and from the monitoring system itself. The control, communication, and data acquisition systems each operate separately from the monitor system. The T and C Monitor System gathers this data in order to verify the readiness of an event to begin countdown. This includes setup, verification, calibration, and peripheral services, report any failures that may occur during the countdown, verify detonation and containment, and assist reentry activities after the event.
Date: January 24, 1984
Creator: Brandt, J.J.
System: The UNT Digital Library
Performance characteristics of large aperture, ten-cell, atmospheric pressure isobutane Cherenkov counters (open access)

Performance characteristics of large aperture, ten-cell, atmospheric pressure isobutane Cherenkov counters

Two large aperture, 10 cell atmospheric-pressure isobutane Cherenkov counters were designed and constructed for a SLAC streamer chamber experiment. The rejection efficiencies for a 9 GeV/c ..pi../sup -/ were measured to be 99.838 +- .006% and 99.717 +- 008% for the two counters. The design details and performance characteristics are discussed.
Date: May 24, 1980
Creator: Hylen, J.; Ma, Z.M.; Jawahery, A.; Maruyama, T.; Milburn, R. & Thornton, R.
System: The UNT Digital Library
Master oscillator stability requirements considerations (open access)

Master oscillator stability requirements considerations

This note attempts to point out some ideas about the required stability of the 476 MHz master oscillator, assuming that the phase noise of the oscillator is the only source of noise in the accelerator system.
Date: June 24, 1986
Creator: Schwarz, H. & Vancraeynest, J.
System: The UNT Digital Library
Lawrence Livermore National Laboratory DIII-D cooperation: 1987 annual report (open access)

Lawrence Livermore National Laboratory DIII-D cooperation: 1987 annual report

This report summarizes the Lawrence Livermore National Laboratory (LLNL) DIII-D cooperation during FY87. The LLNL participation in DIII-D concentrated on three principal areas: ECH and current-drive physics, divertor and edge physics, and tokamak operations. These topics are dicussed in this report. 27 refs., 11 figs.
Date: February 24, 1988
Creator: Allen, S. L.; Calderon, M. O.; Ellis, R. M.; Evans, J. C.; Ferguson, S. W.; Hill, D. N. et al.
System: The UNT Digital Library
Graph-theoretic algorithm for hierarchial decomposition of dynamic systems (open access)

Graph-theoretic algorithm for hierarchial decomposition of dynamic systems

A graph-theoretic scheme is proposed for partitioning of dynamic systems into hierarchially ordered subsystems having independent inputs and outputs. The resulting subsystems are input-output reachable as well as structurally controllable and observable, so that a piece-by-piece design of estimators and controllers can be accomplished for systems with large dimensions without excessive computer requirements.
Date: March 24, 1982
Creator: Pichai, V.; Sezer, M.E. & Siljak, D.D.
System: The UNT Digital Library
Safety assessment document for the dynamic test complex (Building 836) (open access)

Safety assessment document for the dynamic test complex (Building 836)

A safety assessment was performed to determine if potential accidents at the 836 Complex at Site 300 could present undue hazards to the general public, personnel at Site 300, or have an adverse effect on the environment. The credible accidents that might have an effect on these facilities or have off-site consequences were considered. These were earthquake, extreme wind (including missiles), lightning, flood, criticality, high explosive (H) detonation that disperses uranium and beryllium, spontaneous oxidation of plutonium, explosions due to finely divided particles, and a fire.
Date: November 24, 1981
Creator: Odell, B.N. & Pfeifer, H.E.
System: The UNT Digital Library
Potential impacts of artificial intelligence expert systems on geothermal well drilling costs: (open access)

Potential impacts of artificial intelligence expert systems on geothermal well drilling costs:

The Geothermal research Program of the US Department of Energy (DOE) has as one of its goals to reduce the cost of drilling geothermal wells by 25 percent. To attain this goal, DOE continuously evaluates new technologies to determine their potential in contributing to the Program. One such technology is artifical intelligence (AI), a branch of computer science that, in recent years, has begun to impact the marketplace in a number of fields. Expert systems techniques can (and in some cases, already have) been applied to develop computer-based ''advisors'' to assist drilling personnel in areas such as designing mud systems, casing plans, and cement programs, optimizing drill bit selection and bottom hole asssembly (BHA) design, and alleviating lost circulation, stuck pipe, fishing, and cement problems. Intelligent machines with sensor and/or robotic directly linked to AI systems, have potential applications in areas of bit control, rig hydraulics, pipe handling, and pipe inspection. Using a well costing spreadsheet, the potential savings that could be attributed to each of these systems was calculated for three base cases: a dry steam well at The Geysers, a medium-depth Imerial Valley well, and a deep Imperial Valley well. Based on the average potential savings to be …
Date: November 24, 1987
Creator: Satrape, J.V.
System: The UNT Digital Library
Finite-element stress and deflection analysis of CDF yoke and end plug (open access)

Finite-element stress and deflection analysis of CDF yoke and end plug

A large detector is being designed to study anti pp collisions at center-of-mass energies of up to 2000 GeV as part of the Fermilab Collider Detector Facility (CDF). The central detector of this facility consists of a solenoid, calorimeter yoke, and a variety of particle measurement devices. The yoke will be a large steel structure that will provide the magnetic flux return path as well as support structure for calorimetry and other instrumentation. It must resist both electromagnetic and gravitational loads while exhibiting only small elastic deformations. The instrumented endplugs of the yoke are subjected to large electromagnetic loads. Moreover, due to the presence of wire chambers within these plugs, they must also be particularly stiff. The purpose of this paper is to present the results of a finite element stress and deflection analysis of these structures under various anticipated load conditions. The PATRAN-G finite element modeling program, installed on a CDF-VAX 11/780 and operating from a Ramtek 6212 colorgraphics terminal, was used to generate the analysis models. The actual finite element analysis was performed by the ANSYS general purpose finite element program, installed on the Fermilab Cyber 175's.
Date: May 24, 1982
Creator: Wands, R.; Grimson, J.; Kephart, R. & Theriot, D.
System: The UNT Digital Library
Waste systems. Progress report, January 1982-February 1983 (open access)

Waste systems. Progress report, January 1982-February 1983

A laboratory-scale beryllium electrorefining cell has been placed in operation and metallic beryllium with a purity greater than 99.95% has been produced. Methods of uranium chip disposal have been evaluated by performing bench- and pilot-scale testing and by surveying present chip disposal methods. A design criteria has been completed for a new production uranium chip disposal facility. Two types of cementation immobilization processes are being developed to treat several Rocky Flats wastes which do not currently meet repository acceptance criteria. The nitrate salts, as now shipped, are an extremely fine powder, composed chiefly of sodium and potassium nitrate. Nitrates are an oxidizer, and their behavior in a possible fire would be of concern. Accident caused fires involving a cargo of boxed nitrate salts were modeled and the burning characteristics noted. In addition, gypsum cement was tested as an immobilization matrix to reduce dispersibility. A program is in process to construct a facility to remotely size reduce gloveboxes and miscellaneous equipment contaminated with plutonium and other radioactive nuclides. The Title II engineering package is completed and the construction of the facility has been initiated. Modification and additions to the 82 kg/h Fluidized Bed Incinerator were made in preparation for turning the …
Date: October 24, 1983
Creator: Hickle, G.L.
System: The UNT Digital Library
Budget for Nolan County October 1, 1987 through September 30, 1988 (open access)

Budget for Nolan County October 1, 1987 through September 30, 1988

Proposed and approved funding budget for Nolan County, Texas for the the year 1987-1988.
Date: August 24, 1987
Creator: Johnson, J. T.; Shuler, Ernest; White, Tommy & Owens, Dalton
System: The Portal to Texas History
Tritium permeation through characterized films on Type 304L stainless steel (open access)

Tritium permeation through characterized films on Type 304L stainless steel

Rocky Flats is looking for an optimum method for surface treating 304L stainless steel to increase its resistance to tritium permeation. Selected surface treatments were applied to 304L samples. One set of samples was shipped to the Rockwell Corporate Science Center for alternate characterization analysis. Another set was sent to Los Alamos National Laboratory for tritium exposure and ion beam spectrographic analysis. The Science Center performed the following analyses: ellipsometry, contact potential, photoelectron emission, surface energy, surface activation, cathodic polarization, electrochemical impedance, and open-circuit potential. Excellent correlation was found between type of treatment and surface activation and electrochemical impedance. Results of the Science Center tests correlated well with actual tritium permeation measurements made at Los Alamos. 8 refs., 8 figs., 1 tab.
Date: July 24, 1987
Creator: Kallas, A.J.; Rising, T.L.; Childs, E.L. & Thomas, R.L. (ed.)
System: The UNT Digital Library
Fastbus backplane impedance (open access)

Fastbus backplane impedance

None
Date: November 24, 1982
Creator: Haldeman, M.
System: The UNT Digital Library
Low-energy neutral-beam injection in the central cell of TMX-U (open access)

Low-energy neutral-beam injection in the central cell of TMX-U

The purpose is to estimate the central-cell parameters that can be reached by injection of low-energy neutral beams. The main advantages of low energy (2-keV full-energy component) over high energy (15-keV full-energy component) are the following: (1) creation of a beam-fueled, potentially confined, central-cell plasma (n approx. = 10/sup 13/ cm/sup -3/, E/sub ic/ approx. = 1 keV, T/sub ec/ approx. = 0.4 keV) without the use of cold-gas injection or ICRH heating; and (2) reduced shielding requirement against neutrals external to the plasma. The reasons for these expectations are the larger ionization cross section and plasma radius (normalized to ion gyroradius) for low-energy compared to high-energy beams.
Date: September 24, 1984
Creator: Turner, W.C.
System: The UNT Digital Library
Environmental effects on materials in operating power reactors (open access)

Environmental effects on materials in operating power reactors

This paper reviews several areas in which corrosion problems have occurred and what can be done to help improve future performance: BWR pipe cracking, PWR steam generators, Three Mile Island-thiosulfate contamination, secondary side problems, mechanical damage (Ginna), piping and vessel cracking, turbine cracking, and bolting. The safety and operational issues involved are listed. (DLC)
Date: September 24, 1984
Creator: Weeks, J.R.
System: The UNT Digital Library
Geothermal Loan Guarantee Program: need for improvements (open access)

Geothermal Loan Guarantee Program: need for improvements

The progress and management of the Department of Energy's geothermal loan guarantee program are discussed. Recommendations for improving the program and matters for consideration by the Congress are included. (MHR)
Date: January 24, 1980
Creator: Staats, E. B.
System: The UNT Digital Library
Annual outlook for US electric power, 1986 (open access)

Annual outlook for US electric power, 1986

This document includes summary information on the ownership structure of the US electric utility industry, a description of electric utility regulation, and identification of selected factors likely to affect US electricity markets from 1985 through 1995. This Outlook expands upon projections first presented in the Annual Energy Outlook 1985, offering additional discussion of projected US electricity markets and regional detail. It should be recognized that work on the Annual Energy Outlook 1985 had been completed prior to the sharp reductions in world oil prices experienced early in 1986.
Date: April 24, 1986
Creator: unknown
System: The UNT Digital Library
Field testing of an automated wood-combustion system and development of business plan for commercialization of production. Final report for period ending August 1, 1982 (open access)

Field testing of an automated wood-combustion system and development of business plan for commercialization of production. Final report for period ending August 1, 1982

A tunnel burner for burning wood chips has been installed and tested at a school building in Durham, NC. The test revealed many problems which did not exist while testing a prototype in laboratories. Controls were found to work reliably. A business plan was developed and is appended. (LEW)
Date: May 24, 1983
Creator: unknown
System: The UNT Digital Library
SLC vertical survey network (open access)

SLC vertical survey network

During 1984 and 1985 the SLC alignment group established and measured a system of elevation benchmarks (BM's) over the whole of the SLAC site, ranging from the injector area to the NGS horizontal control point (surface monument) AA on the hill to the east of the collider hall outside the radiation fence. Precise elevations are needed in general for survey, alignment, placement, and monitoring of SLC tunnels and components. In particular, precise elevations of the survey instruments, mounted over penetrations to the tunnels and over the horizontal control points, are needed for the reductions of measured distances on the surface. Precise elevations were also needed at several other locations, like sector 1, 10, 19, and 30 along the LINAC (for the Global Positioning System measurements), outside of the IR 8 access to PEP (to connect the run from the SLC Master Benchmark R306 close to LINAC station 100 + 00 through the PEP SIT tunnel), and at the south-west adit to the SLC tunnel (to connect the BSY run). Permanent benchmarks were, therefore, installed close to these locations. To minimize errors and simplify re-leveling, turning points were also permanently installed. Figure 1 shows the locations of the elevation benchmark east …
Date: December 24, 1985
Creator: Friedsam, H.; Goldsmith, T.; Oren, W.; Pietryka, M.; Pitthan, R.; Pushor, T. et al.
System: The UNT Digital Library
Rad Chem Data Acquisition Chassis Users Manual (open access)

Rad Chem Data Acquisition Chassis Users Manual

The Shiva Laser at LLL requires many forms of diagnostics to measure and analyze fusion experiments. This manual describes the operation of a Micro-Processor controlled data acquisition system designed at LLL to measure Neutron Activation during fusion experiments on the Shiva Laser.
Date: January 24, 1980
Creator: Jones, B. A.
System: The UNT Digital Library
Computational compact torus experiment (open access)

Computational compact torus experiment

We describe a typical 2D magnetohydrodynamic (MHD) calculation of rundown of plasma in a coaxial, magnetized gun and injection of the plasma and reconnection of the embedded magnetic fields to form a compact toroidal plasma.
Date: December 24, 1980
Creator: Eddleman, J.L.; McNamara, B.; Nash, J.K.; Shearer, J.W. & Turner, W.C.
System: The UNT Digital Library
Corrosion evaluation of cooling-water treatments for gas centrifuge facilities (open access)

Corrosion evaluation of cooling-water treatments for gas centrifuge facilities

The corrosion resistance of six different types of weighted metal coupons was evaluated at 29/sup 0/C (84/sup 0/F) in flowing water containing nitrite-borate-silicate corrosion inhibitors. The question for evaluation was whether it would be more advantageous: (1) to drain the treated cooling water from the centrifuge machine and to expose them to moisture-laden air over an assumed shop downtime and repair perid of 1 month; or (2) to let the treated cooling water remain stagnant in the machines during this downtime. The moisture-laden-air exposure was more detrimental.
Date: November 24, 1980
Creator: Schmidt, C. R. & Meredith, P. F.
System: The UNT Digital Library
Seismic safety margins research program. Project I SONGS 1 AFWS Project (open access)

Seismic safety margins research program. Project I SONGS 1 AFWS Project

The seismic qualification requirements of auxiliary feedwater systems (AFWS) of Pressurized Water Reactors (PWR) were developed over a number of years. These are formalized in the publication General Design Criteria (Appendix A to 10CFR50). The full recognition of the system as an engineered safety feature did not occur until publication of the Standard Review Plan (1975). Efforts to determine how to backfit seismic requirements to earlier plants has been undertaken primarily in the Systematic Evaluation Program (SEP) for a limited number of operating reactors. Nuclear Reactor Research (RES) and NRR have requested LLNL to perform a probabilistic study on the AFWS of San Onofre Nuclear Generating Station (SONGS) Unit 1 utilizing the tools developed by the Seismic Safety Margins Research Program (SSMRP). The main objectives of this project are to: identify the weak links of AFWS; compare the failure probabilities of SONGS 1 and Zion 1 AFWS: and compare the seismic responses due to different input spectra and design values.
Date: February 24, 1981
Creator: Chuang, T. Y.; Smith, P. D.; Dong, R. G.; Bernreuter, D. L.; Bohn, M. P.; Cummings, G. E. et al.
System: The UNT Digital Library
Acid rain: the impact of local sources (open access)

Acid rain: the impact of local sources

It has been assumed that acid rain is predominantly a problem of long-range transport of pollutants from large fossil fuel combustion sources, namely coal-fired utilities. However, close examination of fuel use information and source emission characteristics in the Adirondacks, Florida, and California suggests that local oil burning and automotive sources may be major contributors to the occurrence of acid rain in these areas. This report describes the possible role of local combustion sources in the production of acid rain, discusses the implications of the findings, and their relevance to alternative control strategies for acid rain. Oil-fired boilers, especially the smaller commercial, industrial, and residential units, produce at least 3 to 10 times as much primary sulfate per unit of sulfur content as coal-fired units. Moreover, oil-fired units emit comparatively large quantities of catalytic compounds capable of rapidly converting still more sulfur oxide to sulfate in the atmosphere. Thus, in areas where large quantities of oil are burned, the direct impact from locally generated sulfates may equal or even exceed that produced by imported sulfates derived from distant coal-burning sources. Fuel consumption data show that large quantities of oil are being consumed in areas experiencing acid rain. Forty percent of the …
Date: November 24, 1980
Creator: Spaite, P.; Esposito, M.P.; Szabo, M.F. & Devitt, T.W.
System: The UNT Digital Library