Search Results

open access

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

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Timing and control monitor system upgrade design document. Version 4

Description: 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 … more
Date: January 24, 1984
Creator: Brandt, J.J.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Master oscillator stability requirements considerations

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Graph-theoretic algorithm for hierarchial decomposition of dynamic systems

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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, spont… more
Date: November 24, 1981
Creator: Odell, B.N. & Pfeifer, H.E.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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, alre… more
Date: November 24, 1987
Creator: Satrape, J.V.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 gravi… more
Date: May 24, 1982
Creator: Wands, R.; Grimson, J.; Kephart, R. & Theriot, D.
Partner: UNT Libraries Government Documents Department
open access

Waste systems. Progress report, January 1982-February 1983

Description: 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 wh… more
Date: October 24, 1983
Creator: Hickle, G.L.
Partner: UNT Libraries Government Documents Department
open access

Tritium permeation through characterized films on Type 304L stainless steel

Description: 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 po… more
Date: July 24, 1987
Creator: Kallas, A.J.; Rising, T.L.; Childs, E.L. & Thomas, R.L. (ed.)
Partner: UNT Libraries Government Documents Department
open access

Fastbus backplane impedance

Description: No Description Available.
Date: November 24, 1982
Creator: Haldeman, M.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 requi… more
Date: September 24, 1984
Creator: Turner, W.C.
Partner: UNT Libraries Government Documents Department
open access

Environmental effects on materials in operating power reactors

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Geothermal Loan Guarantee Program: need for improvements

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Annual outlook for US electric power, 1986

Description: 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 198… more
Date: April 24, 1986
Partner: UNT Libraries Government Documents Department
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

Description: 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
Partner: UNT Libraries Government Documents Department
open access

SLC vertical survey network

Description: 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 ove… more
Date: December 24, 1985
Creator: Friedsam, H.; Goldsmith, T.; Oren, W.; Pietryka, M.; Pitthan, R.; Pushor, T. et al.
Partner: UNT Libraries Government Documents Department
open access

Rad Chem Data Acquisition Chassis Users Manual

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Computational compact torus experiment

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

Corrosion evaluation of cooling-water treatments for gas centrifuge facilities

Description: 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 … more
Date: November 24, 1980
Creator: Schmidt, C. R. & Meredith, P. F.
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 … more
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.
Partner: UNT Libraries Government Documents Department
open access

Acid rain: the impact of local sources

Description: 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 … more
Date: November 24, 1980
Creator: Spaite, P.; Esposito, M.P.; Szabo, M.F. & Devitt, T.W.
Partner: UNT Libraries Government Documents Department
open access

Water-storage-tube systems. Final report

Description: Passive solar collection/storage/distribution systems were surveyed, designed, fabricated, and mechanically and thermally tested. The types studied were clear and opaque fiberglass tubes, metal tubes with plastic liners, and thermosyphoning tubes. (MHR)
Date: December 24, 1981
Creator: Hemker, P.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen