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Stability of Resonator Configurations in the Presence of Free-Electron Laser Interactions

Description: The stability of empty resonators (or cold cavities) has been widely studied, and is well understood. Here we consider the stability of symmetric resonator systems when there is a free-electron laser (FEL) interaction present within the cavity. We first construct a linear thick-lens model of the FEL and analytically study the dependence of resonator stability on its geometry. Next, we employ a nonlinear, three-dimensional FEL oscillator code to study the dependence of FEL performance on the cav… more
Date: November 1, 1992
Creator: Krishnagopal, S. & Sessler, Andrew M.
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Partner: UNT Libraries Government Documents Department
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China energy databook

Description: The Energy Analysis Program (EAP) at the Lawrence Berkeley Laboratory (LBL) first becamc involved in Chinese energy issues through a joint China-US symposium on markets and demand for energy held in Nanjing in November of 1988. Discovering common interests, EAP began to collaborate on projects with the Energy Research Institute (ERI) of China's State Planning Commission. In the course of this work it became clear that a major issue in the furtherance of our research was the acquisition of relia… more
Date: November 1, 1992
Creator: Sinton, J. E.; Levine, M. D.; Liu, Feng; Davis, W. B. (eds.) (Lawrence Berkeley Lab., CA (United States)); Zhenping, Jiang; Xing, Zhuang et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A modified direct preconditioner for indefinite symmetric Toeplitz systems

Description: A modification is presented of the classical O(n[sup 2]) algorithm of Trench for the direct solution of Toeplitz systems of equations. The Trench algorithm can be guaranteed to be stable only for matrices that are (symmetric) positive definite; it is generally unstable otherwise. The modification permits extension of the algorithm to compute an approximate inverse in the indefinite symmetric case, for which the unmodified algorithm breaks down when principal submatrices are singular. As a preco… more
Date: November 1, 1992
Creator: Concus, P. (Lawrence Berkeley Lab., CA (United States) California Univ., Berkeley, CA (United States). Dept. of Mathematics) & Saylor, P. (Illinois Univ., Urbana, IL (United States). Dept. of Computer Science)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Poster session: Fifth users meeting for the Advanced Photon Source

Description: The Advanced Photon Source (APS), which is currently under construction as a national user facility at Argonne National Laboratory is a third-generation synchrotron x-ray source, one of only three in the world. It is expected to produce x-rays that are 10,000 times brighter than any currently produced elsewhere for use in research in a wide range of scientific areas. Users from industry, national laboratories, universities, and business will be able to come to the APS to conduct research either… more
Date: November 1, 1992
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RF cavity development for the PEP-II B factory

Description: This paper describes the development of an RF cavity design for the proposed PEP-II asymmetric B factory. The high luminosity required of PEP-II provides challenges in the design of the RF cavities, most notably in the reduced higher-order mode (HOM) impedances that must be attained and in the power that must be dissipated in the cavity walls. This paper outlines the goals set in these regards, describes how the cavity has been developed to meet them, and presents the results of measurements on… more
Date: November 1, 1992
Creator: Rimmer, R.A.
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Partner: UNT Libraries Government Documents Department
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Laser field assisted photoemission using femtosecond laser pulses

Description: Photoemission from Cu mirror at a laser fluence of 10[sup 11] W/cm[sup 2], 300 fs, pulse is investigated for various angles of incidence, intensities and polarizations. Electron emission is enhanced by [approximately] 20 from s to p polarization and by 4 on changing the angle of incidence from 0 to 73 degree.
Date: November 1, 1992
Creator: Srinivasan-Rao, T.; Fischer, J. & Tsang, T.
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Partner: UNT Libraries Government Documents Department
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Sanitary Landfill groundwater monitoring report, third quarter 1992

Description: This report contains analytical data for samples taken during third quarter 1992 from wells of the LFW series located at the Sanitary Landfill at the Savannah River Site. The data are submitted in reference to the Sanitary Landfill Operating Permit (DWP-087A).
Date: November 1, 1992
Creator: Thompson, C.Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A test of the flavor independence of [alpha][sub s] at the Z[sup 0] resonance

Description: We compare the ratio of the strong coupling [alpha][sub s] measured in Z[sup 0] [yields] b[bar b] events to that measured in Z[sup 0] [yields] q[bar q](q=u,d,s,c) in the SLD experiment at SLAC. Z[sup 0] [yields] b[bar b] events are identified with the aid of a precision silicon vertex detector by requiring that at least three charged tracks pass more than 3.0[sigma] from the Z[sup 0] decay vertex. This method has an estimated efficiency of 54% with a purity of 71%. Jets are identified and count… more
Date: November 1, 1992
Creator: Junk, T.R. (Stanford Univ., CA (United States). Dept. of Physics)
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Partner: UNT Libraries Government Documents Department
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ANL-W 779 pond seepage test

Description: The ANL-W 779 sanitary wastewater treatment ponds are located on the Idaho National Engineering Laboratory (INEL), north of the Argonne National Laboratory -- West (ANL-W) site A seepage test was performed for two Argonne National Laboratory -- West (ANL-W) sanitary wastewater treatment ponds, Facility 779. Seepage rates were measured to determine if the ponds are a wastewater land application facility. The common industry standard for wastewater land application facilities is a field-measured … more
Date: November 1, 1992
Creator: Braun, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron-electron interactions in fast neutral-neutral collisions

Description: Differential electron emission is studied for 50--500 keV H[sup +] and H atom impact on helium. Using the first Born formulation, it is shown that projectile electron-target electron interactions are expected to dominate the differential cross sections for low energy target electron emission induced by fast neutral projectile impact on any target. Measurements of the 15[degrees] electron emission were made in order to investigate this prediction. For low impact energies, a constant ratio betwee… more
Date: November 1, 1992
Creator: DuBois, R.D. & Manson, S.T.
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Partner: UNT Libraries Government Documents Department
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Bimolecular reaction dynamics from photoelectron spectroscopy of negative ions

Description: The transition state region of a neutral bimolecular reaction may be experimentally investigated by photoelectron spectroscopy of an appropriate negative ion. The photoelectron spectrum provides information on the spectroscopy and dynamics of the short lived transition state and may be used to develop model potential energy surfaces that are semi-quantitative in this important region. The principles of bound [yields] bound negative ion photoelectron spectroscopy are illustrated by way of an exa… more
Date: November 1, 1992
Creator: Bradforth, S.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on the UNIX tupleviewer'' challenge

Description: One result of the 1991 B Factory Workshop at SLAC was the definition of a software benchmark project: a user-friendly data browsing tool called a tupleviewer''. The tupleviewer is a program which interactively displays 1-D and 2-D graphical plots from data stored as n-tuples. A set of rules define the minimum requirements for the tupleviewer, but the choices for platform, programming language, window system, graphics package and GUI development system are left open. The purpose of this project … more
Date: November 1, 1992
Creator: Harris, F. A.; Johnson, A. S.; Hollinger, J.; Glanzman, T.; Kunz, P. F.; Pavel, T. et al.
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Partner: UNT Libraries Government Documents Department
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Review of technical justification of assumptions and methods used by the Environmental Protection Agency for estimating risks avoided by implementing MCLs for radionuclides

Description: The Environmental Protection Agency (EPA) has proposed regulations for allowable levels of radioactive material in drinking water (40 CFR Part 141, 56 FR 33050, July 18, 1991). This review examined the assumptions and methods used by EPA in calculating risks that would be avoided by implementing the proposed Maximum Contaminant Levels for uranium, radium, and radon. Proposed limits on gross alpha and beta-gamma emitters were not included in this review.
Date: November 1, 1992
Creator: Morris, S.C.; Rowe, M.D.; Holtzman, S. & Meinhold, A.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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First measurement of the left-right cross section asymmetry in Z boson production at E[sub cm] = 91. 55 GeV

Description: The left-right cross section asymmetry for Z boson production in e[sup +]e[sup -] annihilation (A[sub LR]) has been measured at E[sub cm] = 91.55 GeV with the SLD detector at the SLAC Linear Collider (SLC) using a longitudinally polarized electron beam. The electron polarization was continually monitored with a Compton scattering polarimeter, and was typically 22%. We have accumulated a sample of [approximately]10,200 Z events. We find that A[sup LR] = 0.100 [plus minus] 0.044 [plus minus] 0.00… more
Date: November 1, 1992
Creator: Rowson, P.C. (Columbia Univ., New York, NY (United States). Dept. of Physics)
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Partner: UNT Libraries Government Documents Department
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Surface Modification of Tribological Components in Transportation

Description: This paper reviews a number of programs funded through the Engineered Tribological Interfaces (ETI) Task area of the Tribology Program that utilize energetic beams of atoms to enhance the mechanical and microstructural properties of near-surface regions to improve the tribological performance of critical components. The processes used in these programs include techniques based on chemical vapor deposition, physical vapor deposition, and ion implantation. A common feature of these techniques is … more
Date: November 1, 1992
Creator: Fenske, G. R.
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Partner: UNT Libraries Government Documents Department
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The D[O] upgrade silicon tracker

Description: A large silicon strip tracking detector is planned for the upgrade of the D0 experiment at Fermilab. This detector is designed to gag secondary vertices, to measure the momenta of charged particles and to operate in the high rate environment of the upgraded Tevatron. Details of the detector design are presented here.
Date: November 1, 1992
Creator: Heinson, A.P.
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Partner: UNT Libraries Government Documents Department
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In situ containment and stabilization of buried waste

Description: The objective of the project was to develop, demonstrate and implement advanced grouting materials for the in-situ installation of impermeable, durable subsurface barriers and caps around waste sites and for the in-situ stabilization of contaminated soils. Specifically, the work was aimed at remediation of the Chemical Waste (CWL) and Mixed Waste Landfills (MWL) at Sandia National Laboratories (SNL) as part of the Mixed Waste Landfill Integrated Demonstration (MWLID). This report documents this… more
Date: November 1, 1992
Creator: Allan, M. L.; Kukacka, L. E. & Heiser, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reconstruction of twist grain boundaries in gold

Description: The reconstruction of high-angle twist grain boundaries on the four densest atomic planes in gold are investigated using the recently developed method of grand-canonical simulated quenching. It is found that the grain boundaries on the two densest planes, (111) and (100), do not reconstruct, while those on the (110) and (113) planes do.
Date: November 1, 1992
Creator: Phillpot, S. R.
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Partner: UNT Libraries Government Documents Department
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Effects of air oxidation on the dissolution rate of LWR spent fuel

Description: Dissolution rates for air-oxidized spent fuel were measured in flowthrough tests. Results from two types of specimens, separated grains and multigrain particles, both in oxidized (U[sub 4]O[sub 9+x]) and unoxidized (UO[sub 2]) conditions indicated only minor effects of oxidation on the surface-area-normalized rates. Similar results were obtained for unirradiated specimens in three different oxidation states (UO[sub 2], U[sub 3]O[sub 7], and U[sub 3]O[sub 8]). These observations have important p… more
Date: November 1, 1992
Creator: Gray, W. J.; Thomas, L. E. & Einziger, R. E.
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Partner: UNT Libraries Government Documents Department
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Signals for virtual leptoquark exchange at colliders

Description: We study the effects of virtual leptoquark exchange on charged current and neutral current process at HERA, on di-lepton production at the Tevatron, and on quark pair production at LEP II. We present the areas of parameter space that can be excluded at these colliders by searching for deviations from Standard Model expectations.
Date: November 1, 1992
Creator: Doncheski, M.A. (Wisconsin Univ., Madison, WI (United States). Dept. of Physics) & Hewett, J.L. (Argonne National Lab., IL (United States). High Energy Physics Div.)
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Partner: UNT Libraries Government Documents Department
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Jet multiplicity in W [yields] [ital lv] at [radical]s = 1. 8 TeV p[bar p] collisions

Description: An analysis of the W [yields] l[nu] events, l=e,[mu], yields a jet multiplicity distribution. Data selection and background are presented. The data are shown to be in good agreement with the VECBOS Monte Carlo which generates W [yields] l[nu] plus n jets by a leading order QCD calculation (n=0[divided by]4).
Date: November 1, 1992
Creator: Rodrigo, T.
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Partner: UNT Libraries Government Documents Department
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PFBC Utility Demonstration Project

Description: This report provides a summary of activities by American Electric Power Service Corporation during the first budget period of the PFBC Utility Demonstration Project. In April 1990, AEP signed a Cooperative Agreement with the US Department of Energy to repower the Philip Sporn Plant, Units 3 4 in New Haven, West Virginia, with a 330 KW PFBC plant. The purpose of the program was to demonstrate and verify PFBC in a full-scale commercial plant. The technical and cost baselines of the Cooperative Ag… more
Date: November 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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GRISET certification package

Description: The GRISET (GRIMHX setup) computer code is an input driver for the three dimensional G computer code (Reference 4). GRISET provides a method for automating the creation of G geometry and associated problem specific information such as the reactor maps and the cross section data references. GRISET provides methods which allow the user to model control rod positioning, safety rod insertion with any number failing, control rod withdrawal or insertion, and full or partial melting of control rods. G… more
Date: November 1, 1992
Creator: Taylor, J. J. & Cefus, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of injury/illness recordkeeping pilot course taught in Richland, Washington, June 18, 1992

Description: This report summarizes trainee evaluations for the Safety Training Section course, Injury/Illness Recordkeeping which was conducted June 18, at Hanford, in richland, Washington. This class was the second pilot course taught. This class was designed to aquaint attendees with DOE orders 5484.1, 5484.1A, draft 3 and OSHA regulations found in 29 CFR 1904.
Date: November 1, 1992
Creator: Wright, T. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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