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[Photo and News Release: AIDS Interfaith Network]
A photo from an HIV coping retreat and a news release from the AIDS Interfaith Network about their first retreat for people with AIDS in North Texas.
Date:
June 1, 1989
Creator:
AIDS Interfaith Network
Object Type:
Text
System:
The UNT Digital Library
Prospects for top at the Tevatron collider in the 1990's
We calculated the signal and background rates for top masses of 90, 120, 150, and 180 GeV for both the CDF and D{null} detectors. This allowed us to determine the prospects for both discovery as well as detailed study of heavy top depending on the luminosity. We have focused on the leptons + jets and dilepton signatures. We also consider the question of tagging b-jets and how that should reduce background and help in making a mass determination. 8 refs., 5 figs., 5 tabs.
Date:
January 1, 1989
Creator:
Abachi, S.; Butler, J. (Fermi National Accelerator Lab., Batavia, IL (USA)); Baden, D. (Harvard Univ., Cambridge, MA (USA)); Barnett, B.; Matthews, J. A. (Johns Hopkins Univ., Baltimore, MD (USA)); Buchholz, D. (Northwestern Univ., Evanston, IL (USA)) et al.
Object Type:
Article
System:
The UNT Digital Library
Design of a pulsed switching magnet for the Bevalac
The design and construction of a water cooled, pulsed, laminated core dipole magnet which has recently been installed at the Bevalac is described. This new, energy efficient magnet was funded by the DOE In-House Energy Management Program. The magnet has been specifically designed for maximum efficiency in power utilization and has replaced two dc powered magnets in the Bevalac switchyard. It will reduce energy usage by 747 MWh/yr, and it provides the capability of pulse-to-pulse switching in 0.7 seconds between two major beamline channels serving the nuclear science and radiotherapy programs at the /Bevalac. A unique feature of this magnet is the core design which utilizes an external structure that remains integral with the core laminations after assembly. The structure provides for both torsional and longitudinal rigidity of the core while also facilitating the precision assembly and compression of the core laminations without the use of special assembly fixtures. 2 refs., 4 figs., 1 tab.
Date:
March 1, 1989
Creator:
Abbott, S.; Alonso, J.; Brown, J.; Kalnins, J.; Krebs, G. & Reimers, R.
Object Type:
Article
System:
The UNT Digital Library
Design of an integrally formed RFQ
The design, construction and testing of a 410 MHz RFQ utilizing a new mechanical design concept has been completed at LBL. The RFQ is planned to be used at the Bevatron for injecting protons into the present heavy ion linac. The integral vane-cavity construction is a significant and unique feature of this RFQ design, wherein four walls with integral vanes are assembled to form the RFQ geometry. This design concept provides the capability of achieving precision vane alignment in minimal assembly time with no adjustments required. The design concept including material selection, plating, vacuum seal design, assembly and testing are described. 4 refs., 4 figs., 1 tab.
Date:
March 1, 1989
Creator:
Abbott, S.; Caylor, R.; Gough, R.; Howard, D.; MacGill, R. & Staples, J.
Object Type:
Article
System:
The UNT Digital Library
Survey of results from Brookhaven Experiment 802 at the AGS
Brookhaven Experiment 802 (E-802) is a magnetic spectrometer experiment which is directed toward the measurement of particle momentum spectra and particle-particle correlations following reactions with 14.5 GeV/u O and Si ions. In addition to the spectrometer there are detectors to measure the transverse energy flow, longitudinal energy flow, and the multiplicity. These detectors can be used to characterize the particle spectra or correlated between themselves. Particle spectra have been obtained for protons, pions, and kaons using targets of gold, copper, and aluminum although the data are not entirely analyzed as yet. A first result that is of interest is the K/sup +//..pi../sup +/ ratio for Si + Au reactions which is larger than expected on the basis of the known p + p data. 4 refs., 11 figs.
Date:
January 1, 1989
Creator:
Abbott, T.; Akiba, Y.; Alburger, D.; Beavis, D.; Bloomer, M. A.; Bond, P. D. et al.
Object Type:
Article
System:
The UNT Digital Library
A search for the electric dipole of the electron
We report a new upper limit on the electric dipole moment (EDM) of the electron of d{sub e} = 0.1 {plus minus} 3.2 {times} 10{sup {minus}26} e-cm. This precision is one hundred times better than any previously published limit and a factor of two better than that of unofficial reports. Recently there has been a great deal of theoretical interest in the possibility of a non-zero electron EDM. Models such as the left-right-symmetric Standard Model and an off-standard'' model with new heavy neutrinos are constrained by the new limit on d{sub e}. A non-zero electron EDM would violate the time reversal and parity space-time symmetries. T-violation was observed in neutral kaon decay and is still not fully explained by the Standard Model. Our experimental technique involves searching for an energy shift, linear in applied electric field, between the m{sub F} = 1 and m{sub F} = {minus}1 magnetic sublevels of the F=1 hyperfine level of the 6{sup 2}P{sub 1/2} ground state of atomic thallium. If the electron has a non-zero EDM, this thallium state will exhibit an atomic electric dipole moment that is roughly 600 times larger. The energy shift is detected with the technique of magnetic resonance spectroscopy, employing …
Date:
August 1, 1989
Creator:
Abdullah, K.F.
Object Type:
Report
System:
The UNT Digital Library
[RE: Enclosed Documents]
Photocopy of a memo from Julie Anne Abel, Program Associate, Getty Center for Education in the Arts, to Bill McCarter and Jack Davis. In regards to enclosed documents sent to McCarter and Davis about fundraising, as they researched to find institutes to support their education reform program. The enclosed document is a clipping from the Corporate giving watch, with some pages of potential foundations.
Date:
September 1, 1989
Creator:
Abel, Julie Anne
Object Type:
Letter
System:
The UNT Digital Library
Using computer-based training to facilitate radiation protection review
In a national laboratory setting, it is necessary to provide radiation protection overview and training to diverse parts of the laboratory population. This includes employees at research reactors, accelerators, waste facilities, radiochemical isotope processing, and analytical laboratories, among others. In addition, our own radiation protection and monitoring staffs must be trained. To assist in the implementation of this full range of training, ORNL has purchased prepackaged computer-based training in health physics and technical mathematics with training modules that can be selected from many topics. By selection of specific modules, appropriate radiation protection review packages can be determined to meet many individual program needs. Because our radiation protection personnel must have some previous radiation protection experience or the equivalent of an associate's degree in radiation protection for entry level, the computer-based training will serve primarily as review of major principles. Others may need very specific prior training to make the computer-based training effective in their work situations. 4 refs.
Date:
January 1, 1989
Creator:
Abercrombie, J. S. & Copenhaver, E. D.
Object Type:
Article
System:
The UNT Digital Library
Velocity Measurements at Six Fish Screening Facilities in the Yakima River Basin, Washington, Summer 1988 : Annual Report.
The Bonneville Power Administration (BPA), the United States Bureau of Reclamation (USSR), and the Washington State Department of Ecology (WDOE) are funding the construction and evaluation of fish passage facilities and fish protection facilities at irrigation and hydroelectric diversions in the Yakima River Basin, Washington State. The program provides offsite enhancement to compensate for fish and wildlife losses caused by hydroelectric development throughout the Columbia River Basin, and addresses natural propagation of salmon to help mitigate the impact of irrigation in the Yakima River Basin. This report evaluates the flow characteristics of the screening facilities. Studies consisted of velocity measurements taken in front of the rotary drum screens and within the fish bypass systems during peak flows. Measurements of approach velocity and sweep velocity were emphasized in these studies; however, vertical velocity was also measured. 5 refs., 18 figs., 15 tabs.
Date:
November 1, 1989
Creator:
Abernethy, C. Scott; Neitzel, Duane A. & Lusty, E. William
Object Type:
Report
System:
The UNT Digital Library
Analysis of human factors effects on the safety of transporting radioactive waste materials: Technical report
This report examines the extent of human factors effects on the safety of transporting radioactive waste materials. It is seen principally as a scoping effort, to establish whether there is a need for DOE to undertake a more formal approach to studying human factors in radioactive waste transport, and if so, logical directions for that program to follow. Human factors effects are evaluated on driving and loading/transfer operations only. Particular emphasis is placed on the driving function, examining the relationship between human error and safety as it relates to the impairment of driver performance. Although multi-modal in focus, the widespread availability of data and previous literature on truck operations resulted in a primary study focus on the trucking mode from the standpoint of policy development. In addition to the analysis of human factors accident statistics, the report provides relevant background material on several policies that have been instituted or are under consideration, directed at improving human reliability in the transport sector. On the basis of reported findings, preliminary policy areas are identified. 71 refs., 26 figs., 5 tabs.
Date:
April 1, 1989
Creator:
Abkowitz, Mark D.; Abkowitz, Susan B. & Lepofsky, Mark
Object Type:
Report
System:
The UNT Digital Library
A novel approach to highly dispersing catalytic materials in coal for gasification
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and high catalytic activity of the latter compound will produce economic benefits by reducing the amount of K{sub 2}CO{sub 3} required for high coal char reactivities. The work is focused on the elucidation of coal-catalyst precursor interactions in solution and the variables which control the adsorption and dispersion of coal gasification metal catalysts. In order to optimize coal-metal ion interactions and hence maximize catalyst activity, the study examines the surface electrochemistry of a lignite, a subbituminous, and a bituminous coals and their demineralized and oxidized derivatives prior to loading with the catalytic materials. The surface electrical properties of the coals are investigated with the aid of electrophoresis, while the effects of the surface charge on the adsorption of K{sup +} and Ca{sup 2+} are studied by agitating the coals with aqueous solutions of potassium and calcium. A zeta meter, a tube furnace, and other equipment required for the investigation have been acquired and installed. Preliminary work shows that the …
Date:
January 1, 1989
Creator:
Abotsi, G.M.K. & Bota, K.B.
Object Type:
Report
System:
The UNT Digital Library
Health effects models for nuclear power plant accident consequence analysis: Low LET radiation: Part 2, Scientific bases for health effects models
This report provides dose-response models intended to be used in estimating the radiological health effects of nuclear power plant accidents. Models of early and continuing effects, cancers and thyroid nodules, and genetic effects are provided. Two-parameter Weibull hazard functions are recommended for estimating the risks of early and continuing health effects. Three potentially lethal early effects -- the hematopoietic, pulmonary and gastrointestinal syndromes -- are considered. Linear and linear-quadratic models are recommended for estimating cancer risks. Parameters are given for analyzing the risks of seven types of cancer in adults -- leukemia, bone, lung, breast, gastrointestinal, thyroid and ''other''. The category, ''other'' cancers, is intended to reflect the combined risks of multiple myeloma, lymphoma, and cancers of the bladder, kidney, brain, ovary, uterus and cervix. Models of childhood cancers due to in utero exposure are also provided. For most cancers, both incidence and mortality are addressed. Linear and linear-quadratic models are also recommended for assessing genetic risks. Five classes of genetic disease -- dominant, x-linked, aneuploidy, unbalanced translocation and multifactorial diseases --are considered. In addition, the impact of radiation-induced genetic damage on the incidence of peri-implantation embryo losses is discussed. The uncertainty in modeling radiological health risks is addressed by …
Date:
May 1, 1989
Creator:
Abrahamson, S.; Bender, M.; Book, S.; Buncher, C.; Denniston, C.; Gilbert, E. et al.
Object Type:
Report
System:
The UNT Digital Library
A manual accountability system designed to reduce operator error
At the Savannah River Plant, the separations areas are not equipped with automated accountability systems, therefore accountability is performed manually. Several years ago, the Computer Systems Engineering group was requested to develop a computerized accountability system for the separations areas that would rely on manual entry and perform the necessary computations, adjust and maintain the books, and generate the necessary reports. In addition, the system would provide a complete audit trail and help reduce operator errors. Since the separations areas are actually divided into several material balance areas, the Computer Systems Engineering group was faced with several detailed specifications. Rather than designing a computerized accountability system for each material balance area, they designed a generic system that each area could tailor to its process. The system helps in reducing operator errors by displaying simple data entry forms, performing data validations when possible, providing field help, performing all computations, and generating the necessary reports. Many validation tables are user configurable, as well as the equations for computing transfer and inventory values. 8 figs.
Date:
January 1, 1989
Creator:
Abramczyk, M R
Object Type:
Article
System:
The UNT Digital Library
Z sup 0 physics from the Mark II at the SLC (SLAC Linear Collider)
The MARK II detector has started to take data at the new SLAC Linear Collider. The novel aspects of the accelerator and of the MARK II are briefly described. Displays of event pictures from some of the early-on data are presented to illustrate the quality of the data. A first presentation of the results of an energy scan near the Z{sup 0} mass that is currently in progress shows the expected resonant enhancement near 91 GeV. 2 refs., 23 figs., 1 tab.
Date:
June 1, 1989
Creator:
Abrams, G.S. (Lawrence Berkeley Lab., CA (USA))
Object Type:
Article
System:
The UNT Digital Library
Action description memorandum for the FY 1991 line item: Environmental, Safety and Health Upgrades, Phase 3
This ADM documents the evaluation of the potential environmental impact hazards from the Environmental, Safety and Health Upgrades, Phase 3 project.
Date:
February 1, 1989
Creator:
Adams, F. S. & Hunter, M. R.
Object Type:
Report
System:
The UNT Digital Library
Action description memorandum for the FY 1992 line item: Environmental, Safety and Health Upgrades, Phase 4, Site Drainage Control
This ADM documents the evaluation of the potential environmental impact hazards from the Environmental, Safety and Health Upgrades, Phase 4, Site Drainage Control Project.
Date:
March 1, 1989
Creator:
Adams, F. S. & Hunter, M. R.
Object Type:
Report
System:
The UNT Digital Library
Action Description Memorandum for the Facilities Capability Assurance Program (FCAP) FY 1992 FCAP Item: Steam and Condensate System Upgrades
This ADM documents the evaluation of the potential environmental impact hazards from the Facilities Capability Assurance Project (FCAP), FY 1992, Line Item, Steam and Condensate Systems Upgrades.
Date:
April 1, 1989
Creator:
Adams, Frank S.; Bauer, Richard L. & Anderson, Carol R.
Object Type:
Report
System:
The UNT Digital Library
Action Description Memorandum for the FY 1989 Line Item: Environmental, Safety and Health Upgrades, Phase 2
This ADM documents the evaluation of the potential environmental impact hazards from the Environmental, Safety and Health Upgrades, Phase 2, project. Environmental, Safety and Health Upgrades, Phase 2, project is a $6,500,000 Line Item project for FY 1989. ES and H Phase 2, is a portion of a continuing effort to protect the environment, neighbors and employees from any adverse effects caused by the development and production missions of EG and G Mound Applied Technologies. The three parts of ES and H Phase 2 include: (A) new piping to separate potable water from domestic and process water; (B) improvements in explosive storage facilities; and (C) upgrades of the fuel oil storage systems, including a new tank, the containment basin, and dike.
Date:
March 1, 1989
Creator:
Adams, Frank S.; Hunter, Michael R. & Anderson, Carol R.
Object Type:
Report
System:
The UNT Digital Library
Probability of the iodine spike release rate during an SGTR
The Nuclear Regulatory Commission (NRC) requires utilities to determine the response of a pressurized water reactor (PWR) to a steam generator tube rupture (SGTR) as part of the safety analysis for the plant. The SGTR analysis includes assumptions regarding the presence of fission product iodine in the reactor coolant resulting from iodine spikes. Due to uncertainties in the consequences, the NRC has designated this class of accident as a generic safety issue. To get a better understanding of iodine spiking, reactor trip and associated radiochemistry data were collected from 26 PWRs. These data were compared against validation criteria to determine their applicability to an investigation of the magnitude of an iodine spike following a reactor trip. The applicable data and the results of a statistical analysis are presented. Conclusions are made concerning the magnitude of an iodine spike during an SGTR and these are compared with the NRC analysis criteria. The conclusion is made that the iodine release rate specified for analysis of an SGTR is overly conservative and could be reduced significantly while still maintaining adequate protection to the public. The formalism required by the Standard Review Plan in determining the release rate is judged to be inappropriate and …
Date:
September 1, 1989
Creator:
Adams, J. P. & Atwood, C. L.
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 82, No. 51, Ed. 1 Wednesday, February 1, 1989
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1989
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Status report on an engineering design study of hermetic liquid argon calorimetry for the SSC (Superconducting Super Collider)
There is general recognition that engineering issues are critical to the viability of liquid argon calorimetry (LAC) at the Superconducting Super Collider (SSC). We have undertaken to quantitatively address these issues and, if possible, perform a preliminary design of a proof of principle'' LAC for SSC. To establish LAC as viable at SSC, we must demonstrate that the physics performance of the device is acceptable, despite the presence of dead material due to vessels and support structure. Our approach involves the construction, by a team of physicists and engineers, of one three dimensional model of the LAC system, built as a hierarchy of components and structures, from which we directly perform interferences checks, mechanical, thermal and magnetic analyses, particle tracking, hermeticity evaluation, physics simulation and assembly. This study, begun in February 1989 as part of the SSC generic detector R and D program, was immediately preceded by a workshop at which engineering details of existing and planned LAC systems were thoroughly examined. We describe below the status of our work, beginning with short descriptions of the tools used, the study requirements and LAC configuration baseline. We then detail the LAC design as it presently stands, including assembly considerations, and conclude …
Date:
January 1, 1989
Creator:
Adams, T.; Davis, M.; DiGiacomo, N.J.; Easom, B.; Gordon, H.; Hupp, J. et al.
Object Type:
Article
System:
The UNT Digital Library
A scanning photoelectron microscope (SPEM) at the National Synchrotron Light Source (NSLS)
We are in the process of developing and commissioning a scanning photoelectron microscope (SPEM) at the X1A beamline of the National Synchrotron Light Source (NSLS). It is designed to make use of the Soft X-ray Undulator (SXU) at the NSLS. This high brightness source illuminates a Fresnel zone plate, which forms a focused probe, {<=} 0.2{mu}m in size, on the specimen surface. A grating monochromator selects the photon energy in the 400-800 eV range with an energy resolution of better than 1 eV. The expected flux in the focus is in the 5 {times} 10{sup 7} {minus} 10{sup 9} photons/s range. A single pass Cylindrical Mirror Analyzer (CMA) is used to record photoemission spectra, or to form an image within a fixed electron energy bandwidth as the specimen is mechanically scanned. As a first test, a 1000 mesh Au grid was successfully imaged with a resolution of about 1{mu}m and the CMA tuned to the Au 4 f photoelectron peak. Once it is commissioned, a program is planned which will utilize the microscope to study beam sensitive systems, such as thin oxide/sub-oxide films of alumina and silica, and ultimately various adsorbates on these films. 14 refs., 4 figs.
Date:
January 1, 1989
Creator:
Ade, Harald; Kirz, Janos; Hulbert, Steve; Johnson, Erik; Anderson, Erik & Kern, Dieter
Object Type:
Article
System:
The UNT Digital Library
Scanning Photoelectron Microscope (SPEM) with a zone plate generated microprobe
We describe instrumentation of a scanning photoelectron microscope (SPEM), which we are presently developing and commissioning at the X1A beamline of the National Synchrotron Light Source (NSLS). This instrument is designed to use the Soft X-ray Undulator (SXU) at the NSLS as a high brightness source to illuminate a Fresnel zone plate, thus forming a finely focused probe, {le} 0.2{mu}m in size, on the specimen surface. A grating monochromator selects the photon energy in the 400-800 eV range with an energy resolution better than 1 eV. The expected flux in the focus is in the 5 {times} 10{sup 7} {minus} 10{sup 9} photons/s range. A single pass Cylindrical Mirror Analyzer (CMA) is used to record photoemission spectra, or to form an image within a fixed electron energy bandwidth as the specimen is mechanically scanned. As a first test, a 1000 mesh Au grid was successfully imaged with Au 4 f primary photoelectrons, achieving a resolution of about 1{mu}m. 10 refs., 5 figs., 1 tab.
Date:
January 1, 1989
Creator:
Ade, Harald; Kirz, Janos; Hulbert, Steve; Johnson, Erik; Anderson, Erik & Kern, Dieter
Object Type:
Article
System:
The UNT Digital Library
Recent results on hadronic D/sub s/ and D meson decays from the Mark III
Recent results on hadronic D/sub s/ and D decays from the Mark III collaboration are presented. The absolute branching ratio B(D/sub s//sup +/ /yields/ /phi//pi//sup +/) is studied by searching for fully reconstructed e/sup +/e/sup /minus// /yields/ D/sub s/*/sup /plus minus//D/sub s//sup /minus plus// events using seven hadronic decay modes of the D/sub s//sup +/. A limit of B(D/sub s//sup +/ /yields/ /phi//pi//sup +/) < 4.1% at 90% C.L. is obtained. Evidence is presented for the decay D/sub s//sup +/ /yields/ f/sub 0/(975)/pi//sup +/ which agrees with a recent experimental observation. Upper limits are set for the relative branching ratios B(D/sub s//sup +/ /yields/ /eta//pi//sup +/)/B(D/sub s//sup +/ /yields/ /phi//pi//sup +/) < 2.5 and B(D/sub s//sup +/ /yields/ /eta//prime//pi//sup +/)/B(D/sub s//sup +/ /yields/ /phi//pi//sup +/) < 1.9, where the /eta/ is studied in both the /gamma//gamma/ and the /pi//sup +//pi//sup /minus///pi//sup 0/ decay modes and the /eta//prime/ in the /eta//pi//sup +//pi//sup /minus//, /eta/ /yields/ /gamma//gamma/ decay chain. The resonant substructure of D/sup 0/ /yields/ K/sup /minus///pi//sup +//pi//sup /minus///pi//sup +/ and D/sup +/ /yields/ /bar K//sup 0//pi//sup +//pi//sup /minus///pi//sup +/ is studied. The branching ratio of D/sup 0/ /yields/ /bar K/*/sup 0//rho//sup 0/ is found to be smaller than the theoretically …
Date:
July 1, 1989
Creator:
Adler, J.; Bai, Z.; Blaylock, G. T.; Bolton, T.; Brient, J. C.; Browder, T. E. et al.
Object Type:
Article
System:
The UNT Digital Library