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The multipulse Thomson scattering diagnostic on the DIII-D tokamak
This paper describes the design and operation of a 40-spatial channel Thomson scattering system that uses multiple 20 Hz Nd:YAG lasers to measure the electron temperature and density profiles periodically throughout an entire plasma discharge. Interference filter polychromators disperse the scattered light which is detected by silicon avalanche photodiodes. The measurable temperature range from 10 eV to 20 keV and the minimum detectable density is about 2 {times} 10{sup 18} m{sup {minus}3}. Laser control and data acquisition are performed in real-time by a VME-based microcomputer. Data analysis is performed by a MicroVAX 3400. Unique features of this system include burst mode'' operation, where multiple lasers are fired in rapid succession (< 10 KHz), real-time analysis capability, and laser beam quality and alignment monitoring during plasma operation. Results of component testing, calibration, and plasma operation are presented. 8 refs. 6 figs.
Date:
September 1, 1991
Creator:
Carlstrom, T. N.; Campbell, G. L.; DeBoo, J. C.; Evanko, R. G.; Evans, J.; Greenfield, C. M. et al.
Object Type:
Article
System:
The UNT Digital Library
Prospects of physics at CDF with the SVX
During next physics run CDF will strongly enhance its heavy flavor tagging capabilities with the installation of a silicon vertex detector (SVX), that will allow precise measurements of secondary decay vertices in the plane transverse to the beam (impact parameter resolution {approx equal} 12 {mu}m). We expect this detector to have a significant impact on b-physics (c{tau}{sub B} {approx equal} 350 {mu}m) and top search. In the following we will discuss CDF prospects for top search and for CP violation asymmetry measurements in the B-sector. 16 refs., 5 figs., 1 tabs.
Date:
September 1, 1991
Creator:
Dell'Agnello, S.
Object Type:
Article
System:
The UNT Digital Library
Photoinduced Charge Separation by Polymer-Bound Chromophores
This project has examined the photodynamic behavior of water-soluble polymers that have covalently linked hydrophobic chromophores spaced along the chains. These polymeric systems have been examined for photoinduced charge separation with electron-accepting ions having different total charge. Focus has been on the excited singlet (S{sub 1}) state formed by laser flash absorption. The effects of pH and ionic strength -- factors that govern the conformational nature of the polymer in solution -- have been studied. A second major effort has been to study photoinduced redox processes involving excited states of water-soluble variants of anthracene and acridine. 27 refs., 16 figs., 2 tabs.
Date:
September 1, 1991
Creator:
Rodgers, M. A. J.
Object Type:
Report
System:
The UNT Digital Library
Physical fitness training reference manual for security force personnel at fuel cycle facilities possessing formula quantities of special nuclear materials
The recommendations contained throughout this NUREG are being provided to the Nuclear Regulatory Commission (NRC) as a reference manual which can be used by licensee management as they develop a program plan for the safe participation of guards, Tactical Response Team members (TRTs), and all other armed response personnel in physical fitness training and in physical performance standards testing. The information provided in this NUREG will help licensees to determine if guards, TRTs, and other armed response personnel can effectively perform their normal and emergency duties without undue hazard to themselves, to fellow employees, to the plant site, and to the general public. The recommendations in this NUREG are similar in part to those contained within the Department of Energy (DOE) Medical and Fitness Implementation Guide which was published in March 1991. The guidelines contained in this NUREG are not requirements, and compliance is not required. 25 refs.
Date:
September 1, 1991
Creator:
Arzino, P. A.; Caplan, C. S. & Goold, R. E. (California State Univ., Hayward, CA (United States). Foundation)
Object Type:
Report
System:
The UNT Digital Library
Continuum damping of low-n toroidicity-induced shear Alfven eigenmodes
The effect of resonant continuum damping is investigated for the low-mode-number, toroidicity-induced, global shear Alfven eigenmodes, which can be self-excited by energetic circulating alpha particles in an ignited tokamak plasma. Resonant interaction with the shear Alfven continuum is possible for these eigenmodes, especially near the plasma periphery, leading to significant dissipation, which is typically larger than direct bulk plasma dissipation rates. Two perturbation methods are developed for obtaining the Alfven resonance damping rate from the ideal fluid zeroth-order shear Alfven eigenvalue and eigenfunction. In both methods the real part of the frequency is estimated to zeroth order, and the imaginary part, which includes the damping rate, is then obtained by perturbation theory. One method, which is applicable when the eigenfunction is nearly real, can readily be incorporated into general MHD codes. In the second method, the zeroth-order eigenfunctions may be complex; however, the application of this method to general MHD codes needs more detailed development. Also, an analytical estimate is found for the next-order real frequency shift of the fluid global Alfven mode. Analytical and numerical studies of this continuum damping effect indicate that it can substantially reduce the alpha particle-induced growth rate. Thus, either it is possible to prevent …
Date:
September 1, 1991
Creator:
Berk, H.L.; Van Dam, J.W.; Guo, Z. & Lindberg, D.M.
Object Type:
Report
System:
The UNT Digital Library
Configuration Management Program Plan
Westinghouse Savannah River Company (WSRC) has established a configuration management (CM) plan to execute the SRS CM Policy and the requirements of the DOE Order 4700.1. The Reactor Restart Division (RRD) has developed its CM Plan under the SRS CM Program and is implementing it via the RRD CM Program Plan and the Integrated Action Plan. The purpose of the RRD CM program is to improve those processes which are essential to the safe and efficient operation of SRS production reactors. This document provides details of this plan.
Date:
September 25, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions
The program objective is to generate ultra-fine catalyst particles (20 to 400 {Angstrom} in size) and quantify their potential for improving coal dissolution in the solubilization stage of two-stage catalytic-catalytic liquefaction systems. In the first quarterly report for this program the concept behind our approach was detailed, the structure of the program was presented, key technical issues were identified, preliminary designs were outlined, and technical progress was discussed. All progress made during the second quarter of this program related to experiment design of the proposed supercritical expansion technique for generating ultra-fine, iron compound, catalyst particles. This second quarterly report, therefore, presents descriptions of the final designs for most system components; diagnostic approaches and designs for determining particles size and size distributions, and the composition of the pre-expansion supercritical solution; and the overall technique progress made during this reporting period. 6 refs., 15 figs., 1 tab.
Date:
September 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Utility FGD survey, January--December 1988
This report summarizes the status of Flue Gas Desulfurization (FGD) technology as of December 1988. It highlights the status of the electric utility power industry, projected growth of coal-fired power generation, and the current status and future trends in FGD application. Also discussed is the implementation status of other control technologies such as fluidized bed boilers, which utilities may opt for instead of FGD systems. 15 refs., 2 figs., 10 tabs.
Date:
September 1, 1991
Creator:
Hance, S.L.; McKibben, R.S. & Jones, F.M. (IT Corp., Cincinnati, OH (United States))
Object Type:
Report
System:
The UNT Digital Library
Complex temporal and spatial patterns in nonequilibrium systems
Dynamical systems methods are being developed and used to characterize the formation and evolution of temporal and spatial patterns in systems maintained far from equilibrium. In particular, experiments and analyses are considering electrodeposition of fractal metallic clusters, pattern formation in reaction-diffusion systems, and the primary instabilities of some fluid flows. Novel reactors have been developed to search for chemical patterns (spatial variations in the chemical composition), and sustained patterns have been found in several different one- and two-dimensional geometries. Bifurcations in these patterns are studied by varying control parameters, e.g., the concentrations of the feed chemicals or the temperature. The observed two-dimensional chemical patterns range from the stationary patterns, similar to those predicted by Turing in 1952 but not observed until 1990, to chemical turbulence, which is characterized by large numbers of defects and a rapid decay of spatial correlations. These provide general insights into the formation of spatiotemporal patterns in nonequilibrium systems.
Date:
September 1, 1991
Creator:
Swinney, H. L.
Object Type:
Report
System:
The UNT Digital Library
Writer's Guide for technical procedures
A primary objective throughout the Department of Energy (DOE) complex is that operations be conducted in a deliberate and controlled manner with emphasis upon recognition and maintenance of the facility-specific safety envelope. One critical element of maintaining the safety envelope is procedures. DOE is providing guidance through this and other writer's guides to assist procedure writers across the DOE complex in producing accurate, complete, and usable procedures that promote safe and efficient operations in keeping with such DOE Orders as 5480.19, Conduct of Operations for DOE Facilities'', 5480.5, Safety of Nuclear facilities'', and 5480.6, Safety of Department of Energy-Owned Nuclear Reactors''. This Writer's Guide addresses the content, format, and style of technical procedures (procedures that prescribe production, operation of equipment and facilities, and maintenance activities) and is intended to be applied in a manner appropriate to the individual facility, 15 refs.
Date:
September 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Proposed research on advanced accelerator concepts
This report summarizes technical progress and accomplishments during the proposed three-year research on advanced accelerator concepts supported by the Department of Energy under Contract No. DE-FG02-88ER40465. A vigorous theoretical program has been pursued in critical problem areas related to advanced accelerator concepts and the basic equilibrium, stability, and radiation properties of intense charged particle beams. Broadly speaking, our research has made significant contributions in the following three major areas: Investigations of physics issues related to particle acceleration including two-beam accelerators and cyclotron resonance laser (CRL) accelerators; Investigations of RF sources including the free- electron lasers, cyclotron resonance masers, and relativistic magnetrons; Studies of coherent structures in electron plasmas and beams ranging from a low-density, nonrelativistic, pure electron plasma column to high-density, relativistic, non-neutral electron flow in a high-voltage diode. The remainder of this report presents theoretical and computational advances in these areas.
Date:
September 1, 1991
Creator:
Davidson, R.C. & Wurtele, J.S.
Object Type:
Report
System:
The UNT Digital Library
Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions
The purpose of this program is to design and fabricate an experimental ultra-fine particle generation system; use this system to generate ultra-fine, iron compound, catalyst particles; and to access the ability of these ultra-fine catalyst particles to improve the performance of the solubilization stage of two-stage, catalytic-catalytic liquefaction processes. The effort applied to this program during this reporting period was devoted to experimental design and fabrication tasks.
Date:
September 1, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
A cryogenic system design for the international thermonuclear experimental reactor (ITER)
A conceptual design for ITER was completed last year. The author developed a suitable cryogenic system for ITER as part of this conceptual design effort. An overview of the design is reported. Emphasis is on the fact that cryogenics is a mature science, and a system supporting ITER needs can be made from time-proven components without loss of efficiency or reliability. Because of the large size of the ITER cryogenic system, large numbers of compressors and expanders must be used. Very high reliability is assured by arranging these components in parallel banks where servicing of individual components can be done without interruption of operations. This and other ideas based on the author's experience with Mirror Fusion Test Facility (MFTF) operations are described. 5 refs., 3 figs.
Date:
September 25, 1991
Creator:
Slack, D.S.
Object Type:
Article
System:
The UNT Digital Library
Comparison of TRAC and RELAP5 reactor system calculations for a DEGB LOCA in K-14. 1
A comparison of TRAC and RELAP5 predictions of steady-state and DEGB LOCA results (FI phase) for K-14.1 has been made. Both codes had been previously benchmarked against 1985 L Reactor AC Flow data and were under configuration control. The purpose of the code-to-code comparison is to provide insight on the transient uncertainty in TRAC plenum and tank bottom plenum pressures. The comparisons focus on LOCA results between 0.5 and 2.0 s, which is the primary period of interest for Flow Instability (FI) limits.
Date:
September 1, 1990
Creator:
Griggs, D.P. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Liebmann, M.L. (Wais and Associates (United States))
Object Type:
Report
System:
The UNT Digital Library
Seismic hazard evaluation for the high-flux isotope reactor (HFIR) Oak Ridge National Laboratory, Oak Ridge, Tennessee
This study investigates the probabilistic hazard of earthquake-induced ground shaking at the HFIR facility, Oak Ridge, Tennessee. These results will be used to calculate plant response and potential effects in a Probabilistic Risk Assessment (PRA). For this purpose, several guidelines apply to this work. First, both the frequency of exceedance and the uncertainty in frequency of exceedance of various ground motion levels must be represented. These are required by the PRA so that the frequency and uncertainty of various possible plant states can be expressed. Second, there is a deliberate attempt to provide an unbiased distribution of frequencies of exceedance, i.e. to present results that are neither conservative nor unconservative. This is consistent with the goals of a PRA, to provide unbiased estimates of plant effects from which appropriate decisions (for instance about evaluating existing levels of seismic design) can be reached. Recent intensive studies of seismic hazard in the central and eastern United States (CEUS) have been completed by the Electric Power Research Institute (EPRI). These studies represent major efforts to characterize the seismic hazard for nuclear power plants in the CEUS, and use the most recent, up-to-date understandings of seismicity and ground motion relations for the region. With …
Date:
September 1, 1991
Creator:
McGuire, R.K. & Toro, G.R. (Risk Engineering, Inc., Golden, CO (United States))
Object Type:
Report
System:
The UNT Digital Library
[Letter from Jack Davis to Bill McCarter, September 18, 1995]
Photocopy of a letter e-mail from Jack Davis, co-director of North Texas Institute for Educators on the Visual Arts to his colleague to Bill McCarter, that Davis received prior. The email is to the "Houston Group" from Jack and Jeff, reminding the group about the press announcement of Transforming Education Through the Arts in Los Angeles, set by Harold Williams and Vartan Gregorian for October 11, 1995. Davis asks of the group who can go to LA and to let Vicki Rosenberg know by September 25th and to let her know how many directors and funders are able to make the trip as well.
Date:
September 15, 1995
Creator:
Davis, Donald Jack
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Nancy Reynolds to William Otton, September 13, 1993]
Photocopy of a letter from Nancy Reynolds, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Dr. William Otton, Art Museum of South Texas. In regards to the seminar NTIEVA presented at the museum in August and how they will be meeting with Linda Eshom and Ola Underhill to discuss continuous collaboration. Reynolds writes that they have reserved the days of June 28 - July 1 and July 5 - 8, 1994 for Corpus Christi to discuss future seminars and the ways to best serve the teachers. Enclosed with the letter is an attached NTIEVA newsletter, which includes an article about the Corpus seminars.
Date:
September 13, 1993
Creator:
Reynolds, Nancy
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to John Paul Batiste, September 13, 1994]
Photocopy of a letter from Leilani Lattin Duke, director of the Getty Center, to John Paul Batiste, executive director of Texas Commission on the Arts. In regards to an invitation Batiste had received from Harold M. Williams, President of the J. Paul Getty Trust, to attend a dinner on January 12, 1995 in connection with the Getty Center's national conference. Duke is writing to give more information on the conference, which is being held from January 11th - 14th at the Washington Hilton and Towers in Washington, D.C. The three day conference will feature speakers from business, education, government and the arts.
Date:
September 13, 1994
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Bill McCarter to Gail Davitt, September 25, 1995]
Photocopy of a letter from Bill McCarter, co-director of North Texas Institute for Educators on the Visual Arts, to Gail Davit. In regards of scheduling a two-week summer institute at the Dallas Museum of Art teachers in the Dallas Independent School District. McCarter is hoping that the DMA could provide a laboratory for the fellows to have a "capstone" experience that would benefit the DMA, NTIEVA, DISD and the Marcus Foundation from such a collaboration. An issue McCarter addresses is finding the money to pay the teachers for attending, possibly a shared cost between the district and NTIEVA, he ends the letter saying many details have to be worked out. A cover sheet is at the end of the faxed letter.
Date:
September 25, 1995
Creator:
McCarter, William
Object Type:
Letter
System:
The UNT Digital Library
[DBAE Leadership Forum Summary from Vicki Rosenberg to Forum Participants, September 17, 1997]
Photocopy of the DBAE Leadership Forum text summary from Vicki Rosenberg, Senior Program Officer of the Getty Center, to the center's forum participants. The Getty Education Institute has provided the participants with a summary of the DBAE Leadership forum that was held January 11, 1997. The summary describes all that had transpired at the DBAE Leadership conference, beginning with a speech from the Director of Getty Education Institute for the Arts, Leilani Lattin Duke. The context of the summary is positive, the recommendations from the conferences' discussion are being used by the Education Institute to inform long-range plans for educational reform, taking arts education into the next century.
Date:
September 17, 1997
Creator:
Rosenberg, Vicki
Object Type:
Letter
System:
The UNT Digital Library
[RE: Arts Education Assessment Consortium, September 14, 1994]
Photocopy of a letter from Julie Abel, the Getty Center, to the Regional Institute Directors, in regards to the upcoming arts assessment. The Arts Education Assessment Consortium, AEAC, is administered by the Council of Chief State School Officers to all the RIG states. The Center is providing support to the AEAC to develop assessment prototypes in the visual and performing arts and believes that if the DBAE, discipline-based art education, is embedded in the assessment prototypes it will strengthen the impact within the state and nationally. A list of state contacts is attached to the letter.
Date:
September 14, 1994
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to M'Lou Bancroft, September 13, 1994]
Photocopy of a letter from Leilani Lattin Duke, director of the Getty Center, to M'Lou Bancroft, executive director of the Edward and Betty Marcus Foundation. In regards to an invitation Bancroft had received from Harold M. Williams, President of the J. Paul Getty Trust, to attend a dinner on January 12, 1995 in connection with the Getty Center's national conference. Duke is writing to give more information on the conference, which is being held from January 11th - 14th at the Washington Hilton and Towers in Washington, D.C. The three day conference will feature speakers from business, education, government and the arts.
Date:
September 13, 1994
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library
[RE: October Directors' and Funder's Meetings, September 2, 1993]
Photocopy of a letter from Vicki Rosenberg, program officer for the Getty Center, to the Regional and Californian Institute Directors. In regards to the postponing the Funder's Meeting due to the poor RSVP response to the Center's invitations. The Center has plans to reschedule the meeting sometime after July 1, 1994, and as a result the Center is also cancelling the Resource Room. Copied on the letter are, Ann Bassi, Leilani Lattin Duke, Val Marmillion, Natalie Sterba, Blanche Rubin and Brent Wilson.
Date:
September 2, 1993
Creator:
Rosenberg, Vicki
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Leilani Lattin Duke to Bonnie Bernau, September 23, 1996]
Photocopy of a letter from Leilani Lattin Duke, Director of the Getty Center, to Bonnie Bernau, Very Special Arts. In discussion of Bernau's involvement with developing Creating and Beyond: Arts Education for a Changing World. However, due to the Center's changes in educational environment and demands on resources they've decided not to proceed with the publication of the work, but thank Bernau for the contribution made to the project. As consolation to Bernau's efforts, the Center would like to invite her to the upcoming national conference, "Education for the Workplace through the Arts."
Date:
September 23, 1996
Creator:
Duke, Leilani Lattin
Object Type:
Letter
System:
The UNT Digital Library