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Correction of dispersion and the betatron functions in the CEBAF accelerator

Description: During the commissioning of the CEBAF accelerator, correction of dispersion and momentum compaction, and, to a lesser extent, transverse transfer matrices were essential for robust operation. With changing machine conditions, repeated correction was found necessary. To speed the diagnostic process the authors developed a method which allows one to rapidly track the machine optics. The method is based on measuring the propagation of 30 Hz modulated betatron oscillations downstream of a point of … more
Date: October 1, 1996
Creator: Lebedev, V. A.; Bickley, M.; Schaffner, S.; Zeijts, J. van; Krafft, G. A. & Watson, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Space-charge-dominated beam dynamics simulations using the massively parallel processors (MPPs) of the Cray T3D

Description: Computer simulations using the multi-particle code PARMELA with a three-dimensional point-by-point space charge algorithm have turned out to be very helpful in supporting injector commissioning and operations at Thomas Jefferson National Accelerator Facility (Jefferson Lab, formerly called CEBAF). However, this algorithm, which defines a typical N{sup 2} problem in CPU time scaling, is very time-consuming when N, the number of macro-particles, is large. Therefore, it is attractive to use massiv… more
Date: October 1, 1996
Creator: Liu, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Jefferson Lab, a status report

Description: Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 {micro}A continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experimen… more
Date: October 1, 1996
Creator: Dunham, B. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Control of Trace Metal Emissions During Coal Combustion

Description: Emissions of toxic trace metals in the form of metal fumes or submicron particulate from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDS) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the formed fumes … more
Date: October 1, 1996
Creator: Ho, Thomas C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Stout]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date: October 1, 1996, 10:00 p.m.
Duration: 1 minute 27 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Waiting room]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. Story aired at 6pm.
Date: October 1, 1996, 6:00 p.m.
Duration: 57 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Fast Wave Heating and Current Drive in DIII-D Discharges With Negative Central Shear

Description: The noninductive current driven by fast Alfven waves (FWCD) has been applied to discharges in DIII-D with negative central shear. Driven currents as high as 275 kA have been achieved with up to 3 MW of fast wave power with the efficiency and profile as predicted by theory-based modeling. When counter-current FWCD was applied to discharges with negative central shear, the negative shear was strengthened and prolonged, showing that FWCD can help to control the current profile in advanced tokamak … more
Date: October 1, 1996
Creator: Prater, R.; Austin, M. E. & Baity, F. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mixed Waste Focus Area Program Management Plan

Description: This plan describes the program management principles and functions to be implemented in the Mixed Waste Focus Area (MWFA). The mission of the MWFA is to provide acceptable technologies that enable implementation of mixed waste treatment systems developed in partnership with end-users, stakeholders, tribal governments and regulators. The MWFA will develop, demonstrate and deliver implementable technologies for treatment of mixed waste within the DOE Complex. Treatment refers to all post waste-g… more
Date: October 1, 1996
Creator: Beitel, G. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gene identification and analysis: an application of neural network-based information fusion

Description: Identifying genes within large regions of uncharacterized DNA is a difficult undertaking and is currently the focus of many research efforts. We describe a gene localization and modeling system called GRAIL. GRAIL is a multiple sensor-neural network based system. It localizes genes in anonymous DNA sequence by recognizing gene features related to protein-coding slice sites, and then combines the recognized features using a neural network system. Localized coding regions are then optimally parse… more
Date: October 1, 1996
Creator: Matis, Sherri; Xu, Ying; Shah, Manesh B.; Mural, Richard J.; Einstein, J. R. & Uberbacher, Edward C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stability of purgeable VOCs in water samples during pre-analytical holding: Part 1, Analysis by a commercial laboratory

Description: This study was undertaken to examine the hypothesis that prevalent and priority purgeable VOCs in properly preserved water samples are stable for at least 28 days. (VOCs are considered stable if concentrations do not change by more than 10%.) Surface water was spiked with 44 purgeable VOCs. Results showed that the measurement of 35 out of 44 purgeable VOCs in properly preserved water samples (4 C, 250 mg NaHSO{sub 4}, no headspace in 40 mL VOC vials with 0.010-in. Teflon-lined silicone septum c… more
Date: October 1, 1996
Creator: West, Olivia R.; Bayne, Charles K.; Siegrist, Robert L.; Holden, William L.; Scarborough, Shirley S. & Bottrell, David W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NIF pointing and centering systems and target alignment using a 351 nm laser source

Description: The operational requirements of the National Ignition Facility (NIF) place tight constraints upon its alignment system. In general, the alignment system must establish and maintain the correct relationships between beam position, beam angle, laser component clear apertures, and the target. At the target, this includes adjustment of beam focus to obtain the correct spot size. This must be accomplished for all beamlines in a time consistent with planned shot rates and yet, in the front end and ma… more
Date: October 1, 1996
Creator: Boege, Steven J.; Bliss, Erlan S.; Chocol, Clifford J.; Holdener, Fred R.; Miller, John L.; Toeppen, John S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Trial application of a technique for human error analysis (ATHEANA)

Description: The new method for HRA, ATHEANA, has been developed based on a study of the operating history of serious accidents and an understanding of the reasons why people make errors. Previous publications associated with the project have dealt with the theoretical framework under which errors occur and the retrospective analysis of operational events. This is the first attempt to use ATHEANA in a prospective way, to select and evaluate human errors within the PSA context.
Date: October 1, 1996
Creator: Bley, Dennis C.; Cooper, Susan E.; Parry, Gareth W.; Wreathall, John; Luckas, William J.; Drouin, Mary et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Using final state gluons as probes of anomalous top quark couplings at the NLC

Description: The rate and corresponding gluon jet energy distribution for the process e{sup +}e{sup {minus}} {r_arrow} t{anti t}g are sensitive to the presence of anomalous dipole-like couplings of the top to the photon and Z at the production vertex as well as to the gluon itself. For sizeable anomalous couplings substantial derivations in the shape and magnitude of the gluon spectrum from the expectations of the Standard Model are anticipated. The authors explore the capability of the Next Linear Collider… more
Date: October 1, 1996
Creator: Rizzo, Thomas G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recent trends in inorganic mass spectrometry

Description: The field of inorganic mass spectrometry has seen substantial change in the author`s professional lifetime (over 30 years). Techniques in their infancy 30 years ago have matured; some have almost disappeared. New and previously unthought of techniques have come into being; some of these, such as ICP-MS, are reasonably mature now, while others have some distance to go before they can be so considered. Most of these new areas provide fertile fields for researchers, both in the development of new … more
Date: October 1, 1996
Creator: Smith, D. H.; Barshick, C. M.; Duckworth, D. C. & Riciputi, L. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

RAMS (Risk Analysis - Modular System) methodology

Description: The Risk Analysis - Modular System (RAMS) was developed to serve as a broad scope risk analysis tool for the Risk Assessment of the Hanford Mission (RAHM) studies. The RAHM element provides risk analysis support for Hanford Strategic Analysis and Mission Planning activities. The RAHM also provides risk analysis support for the Hanford 10-Year Plan development activities. The RAMS tool draws from a collection of specifically designed databases and modular risk analysis methodologies and models. … more
Date: October 1, 1996
Creator: Stenner, R. D.; Strenge, D. L. & Buck, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Student-Designed Potentiometric Titration: Quantitative Determination of Iron(II) by Caro's Acid Titration

Description: Article on a student-designed potentiometric titration and a quantitative determination of iron(II) by Caro's acid titration.
Date: October 1, 1996
Creator: Powell, Joyce R.; Tucker, Sheryl A. (Sheryl Ann); Acree, William E. (William Eugene); Sees, Jennifer A. & Hall, Lindsey H.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
captions transcript

[News Clip: Waiting Room]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: October 1, 1996, 6:00 p.m.
Duration: 56 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Regenerative Amplification of Femtosecond Pulses: Design andConstruction of a sub-100fs, muon J Laser System

Description: Femtosecond lasers are a powerful tool for a wealth of applications in physics, chemistry and biology. In most cases, however, their use is fundamentally restricted to a rather narrow spectral range. This thesis deals with the construction and characterization of a femtosecond light source for spectroscopic applications which overcomes that restriction. It is demonstrated how the output of a continuously pumped Ti:sapphire femtosecond oscillator is amplified to the {mu}J level,while the pulse d… more
Date: October 1, 1996
Creator: Schumacher, Andreas B.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Basalt features observed in outcrops, cores, borehole video imagery and geophysical logs, and basalt hydrogeologic study at the Idaho National Engineering Laboratory, Eastern Idaho

Description: A study was undertaken to examine permeable zones identified in boreholes open to the underlying basalt and to describe the vertical cross flows present in the boreholes. To understand the permeable zones in the boreholes detailed descriptions and measurements of three outcrops in the Snake River Plain, three cores at the Idaho Chemical Processing Plant (ICPP) at the INEL, and over fifty borehole TV logs from the INEL were carried out. Based on the observations made on the three outcrops an ide… more
Date: October 1, 1996
Creator: Bennecke, William M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

A process for application of ATHEANA - a new HRA method

Description: This paper describes the analytical process for the application of ATHEANA, a new approach to the performance of human reliability analysis as part of a PRA. This new method, unlike existing methods, is based upon an understanding of the reasons why people make errors, and was developed primarily to address the analysis of errors of commission.
Date: October 1, 1996
Creator: Parry, Gareth W.; Bley, Dennis C.; Cooper, Susan E.; Wreathall, John; Luckas, William J. & Thompson, Catherine M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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