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A 2-MV multi-beam injector for heavy ion fusion

Description: Construction of a sixteen beam (0.5 A per beam) injector for use in scaled heavy ion fusion experiments is underway at LBL. The machine was designed and partially constructed at LANL. The injector is designed to use carbon arc sources which will provide 25 mA/cm/sup 2/ of extractable current density. The plasma from the arcs is confined electrostatically from drifting into the ion gun before firing the extraction pulse. The acceleration column consists of a set of aperture lenses which both tra… more
Date: June 1, 1988
Creator: Rutkowski, H. L.; Faltens, A.; Vanecek, D.; Pike, C.; Humphries, S., Jr. & Meyer, E. A.
Item Type: Refine your search to only Article
open access

Accelerator research on MBE-4, an experimental multi-beam induction linac

Description: The multiple beam accelerator MBE-4 is a device for research toward a heavy ion driver for inertial confinement fusion, based on the induction linac concept. Its main goal is proof of the principle of current amplification by acceleration and controlled self-similar beam pulse compression. Into the 16-m long device four beams, each with an initial current of 10 mA are injected from a Marx-driven diode at 200 keV. The current amplification is up to nine-fold, with a final beam energy of about 80… more
Date: June 1, 1988
Creator: Meuth, H.; Fessenden, T. J.; Keefe, D. & Warwick, A. I.
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Achromatic beam combiner and bend system for ILSE (Induction Linac System Experiment)

Description: The lattice configuration of the beam combiner and bend system of the proposed Induction Linac System Experiment (ILSE) is described. These subsystems must transport high current ion beams with large momentum variations within a single pulse (..delta..P/P/sub 0/ less than or equal to +-.1), with minimal beam loss or emittance growth. Configurations which are achromatic through first order, including the effect of image fields have been developed. Calculations of the beam envelope and centroid m… more
Date: June 1, 1988
Creator: Lee, Edward P.
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open access

Advanced Materials by Design

Description: This assessment responds to a joint request from the House Committee on Science, Space, and Technology and the Senate Committee on Commerce, Science, and Transportation to analyze the military and commercial opportunities presented by new structural materials technologies, and to outline the Federal policy objectives that are consistent with those opportunities.
Date: June 1988
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
open access

Advanced materials for solid oxide fuel cells: Hafnium-Praseodymium-Indium Oxide System

Description: The HfO/sub 2/-PrO/sub 1.83/-In/sub 2/O/sub 3/ system has been studied at the Pacific Northwest Laboratory to develop alternative, highly electrically conducting oxides as electrode and interconnection materials for solid oxide fuel cells. A coprecipitation process was developed for synthesizing single-phase, mixed oxide powders necessary to fabricate powders and dense oxides. A ternary phase diagram was developed, and the phases and structures were related to electrical transport properties. T… more
Date: June 1, 1988
Creator: Bates, J. L.; Griffin, C. W. & Weber, W. J.
Item Type: Refine your search to only Report
open access

The all particle method: Coupled neutron, photon, electron, charged particle Monte Carlo calculations

Description: At the present time a Monte Carlo transport computer code is being designed and implemented at Lawrence Livermore National Laboratory to include the transport of: neutrons, photons, electrons and light charged particles as well as the coupling between all species of particles, e.g., photon induced electron emission. Since this code is being designed to handle all particles this approach is called the ''All Particle Method''. The code is designed as a test bed code to include as many different m… more
Date: June 1, 1988
Creator: Cullen, D.E.; Perkins, S.T.; Plechaty, E.F. & Rathkopf, J.A.
Item Type: Refine your search to only Article
open access

Alpha-particle effects on high-n instabilities in tokamaks

Description: Hot ..cap alpha..-particles and thermalized helium ash particles in tokamaks can have significant effects on high toroidal mode number instabilities such as the trapped-electron drift mode and the kinetically calculated magnetohydrodynamic ballooning mode. In particular, the effects can be stabilizing, destabilizing, or negligible, depending on the parameters involved. In high-temperature tokamaks capable of producing significant numbers of hot ..cap alpha..-particles, the predominant interacti… more
Date: June 1, 1988
Creator: Rewoldt, G.
Item Type: Refine your search to only Report
open access

Alternate site selection process for UMTRA (Uranium Mill Tailings Remedial Action) project sites

Description: The purpose of this document is to describe the guidelines and processes to be used by the Department of Energy (DOE) with input from the affected states and tribes to select alternate disposal sites in compliance with each established cooperative agreement. This document supersedes two previous DOE documents, Criteria for Evaluating Disposal Sites (DOE, 1982) and Alternate Site Selection Process (ASSP) for UMTRA Project Sites (DOE, 1986). This revision of the ASSP was prepared in response to t… more
Date: June 1, 1988
Item Type: Refine your search to only Report
open access

Amplitude and phase acoustic microscopy and its application to QNDE

Description: The authors have two amplitude and phase measuring acoustic microscopes, one at low frequency (3--10 MHz) which is used for measurements in metals and composites, and the other operating at frequencies of up to 200 MHz which is used for higher resolution measurements. The added dimension of having phase information allows one to use image processing for a variety of applications. They have demonstrated the following applications with these two microscopes: inversion for reflectance function cal… more
Date: June 1, 1988
Creator: Khuri-Yakub, B. T.; Reinholdtsen, P.; Chou, C. H.; Parent, P. & Cinbis, C.
Item Type: Refine your search to only Article
open access

Analysis of beryllium and depleted uranium: An overview of detection methods in aerosols and soils

Description: We conducted a survey of commercially available methods for analysis of beryllium and depleted uranium in aerosols and soils to find a reliable, cost-effective, and sufficiently precise method for researchers involved in environmental testing at the Yuma Proving Ground, Yuma, Arizona. Criteria used for evaluation include cost, method of analysis, specificity, sensitivity, reproducibility, applicability, and commercial availability. We found that atomic absorption spectrometry with graphite furn… more
Date: June 1, 1988
Creator: Camins, I. & Shinn, J.H.
Item Type: Refine your search to only Report
open access

Analytical and numerical evaluation of Landau cavities in the Fermilab Booster

Description: Longitudinal coupled bunch instability has been observed in the Fermilab Booster at high intensity. It is a cause for concern due to its effect on the Tevatron collider performance. We study this phenomenon using initial value technique to correctly account for the underlying transient nature. Analytic result is obtained for any mode and comparison is made between ordinary harmonic potential and higher harmonic (Landau) cavity potential. A computer program is developed to facilitate the calcula… more
Date: June 9, 1988
Creator: Chao, Yu-Chiu & Ng, King-Yuen
Item Type: Refine your search to only Article
open access

Antiproton production and energy density limitations in targets for the Fermilab pbar source

Description: The recent measurements of the antiproton yield as well as the previous ones differ from the predictions which are the basis of the TEVATRON1 Design Report. It was found in reference that at small acceptances, where the data depends essentially only on the forward pbar production cross section, the measured yield data indicates that these cross sections were over estimated by about a factor of 3 in the case of tungsten and about 2.3 in the case of copper. To clear up the situation and to unders… more
Date: June 1, 1988
Creator: Azhgirey, I. L. & Mokhov, N. V.
Item Type: Refine your search to only Report
open access

Are we cleaning up?: 10 Superfund case studies: a special report of OTA's assessment on Superfund implementation

Description: This special report presents 10 case studies of recent Superfund decisions at sites which OTA believes, from surveying over 100 recent cleanup decisions, to be representative of a broad range of contamination problems and cleanup technologies.
Date: June 1988
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
open access

Assessment of engineered barrier system and design of waste packages

Description: The US Nuclear Regulatory Commission has established two post-closure performance objectives for the Engineered Barrier System (EBS) in a geologic repository. These require containment of the waste followed by controlled release. The EBS for a repository in unsaturated tuff at Yucca Mountain is designed to meet these performance objectives. The major components are the waste form, container, air gap, and borehole liner. Assessment of post-closure performance of the EBS is based on allocating pe… more
Date: June 1, 1988
Creator: Ramspott, L.D.
Item Type: Refine your search to only Article
open access

Be in the Salton Sea Geothermal System, California (USA): Salton Sea Scientific Drilling Project, California State 2-14 well: Final report

Description: The Salton Sea Geothermal System lies in the old Colorado River Delta, where sediments have been metamorphosed by hydrothermal processes. Fluids, from well Fee No. 5 and deep hole SSSDP California State 2-14, as well as rocks from the deep hole were studied for /sup 10/Be and /sup 9/Be. In the solid samples /sup 10/Be concentration ranges from 29 to 259 /times/ 10/sup 6/ atom/g and /sup 9/Be from 0.49 to 2.52 ppM. The /sup 10/Be concentration in the geothermal waters ranges from 2 /times/ 10/su… more
Date: June 1, 1988
Creator: Valette-Silver, N.J.
Item Type: Refine your search to only Report
open access

Black liquor gasification phase 2D final report

Description: This report covers work conducted by Rockwell International under Amendment 5 to Subcontract STR/DOE-12 of Cooperative Agreement DE-AC-05-80CS40341 between St. Regis Corporation (now Champion International) and the Department of Energy (DOE). The work has been designated Phase 2D of the overall program to differentiate it from prior work under the same subcontract. The overall program is aimed at demonstrating the feasibility of and providing design data for the Rockwell process for gasifying K… more
Date: June 1, 1988
Creator: Kohl, A.L. & Stewart, A.E.
Item Type: Refine your search to only Report
open access

Bootstrap Confidence Intervals in a Complex Situation: A Sequential Paired Clinical Trial

Description: This paper considers the problem of determining a confidence interval for the difference between two treatments in a simplified sequential paired clinical trial, which is analogous to setting an interval for the drift of a random walk subject to a parabolic stopping boundary. Three bootstrap methods of construction are applied: Efron's accelerated bias-covered, the DiCiccio-Romano, and the bootstrap-t. The results are compared with a theoretical approximate interval due to Siegmund. Difficultie… more
Date: June 1, 1988
Creator: Morton, Sally C.
Item Type: Refine your search to only Article
open access

Boundary conditions for OH, L, and H-mode simulations

Description: A method for prescribing appropriate boundary conditions for predictive simulations using flux-surface-averaged plasma transport codes is described. The model makes use of the present theoretical understanding of L and H-mode transport mechanisms and is consistent with trends in existing data. It is calibrated against an ASDEX experiment and used to predict the edge behavior in CIT. 14 refs., 7 figs.
Date: June 1, 1988
Creator: Singer, C. E.; Bateman, G. & Stotler, D. P.
Item Type: Refine your search to only Report
open access

Canonical integration and analysis of periodic maps using non-standard analysis and life methods

Description: We describe a method and a way of thinking which is ideally suited for the study of systems represented by canonical integrators. Starting with the continuous description provided by the Hamiltonians, we replace it by a succession of preferably canonical maps. The power series representation of these maps can be extracted with a computer implementation of the tools of Non-Standard Analysis and analyzed by the same tools. For a nearly integrable system, we can define a Floquet ring in a way cons… more
Date: June 1, 1988
Creator: Forest, E. & Berz, M.
Item Type: Refine your search to only Article
open access

Characteristics of low-q disruptions in PBX

Description: The results of this study indicate that even within the relatively narrow low-q/sub /psi// operating space, there is a continuum in the characteristics of the low-q/sub /psi// disruptions with a primary dependence on the value of <..beta../sub t/>. While the ideal external kink instability may give rise to the growing oscillations that lead up to the ultimate disruption, the instabilities are weighted towards the edge only at the lowest-q/sub /psi// (less than or equal to 3) and highest <..beta… more
Date: June 1, 1988
Creator: Kaye, S.M.; Jahns, G.L.; Morris, A.W.; Sesnic, S.; Bol, K.; Chance, M. et al.
Item Type: Refine your search to only Report
open access

Charmed and strange baryon production in 29 GeV electron positron annihilation

Description: This dissertation presents measurements of the production rates of baryons with different strangeness and spin. The analyses presented here use data taken with the Mark III detector at the PEP storage ring, operating at a center of mass energy of 29 GeV. The ..xi../sup /minus// production rate is measured to be 0.017 +- 0.004 +- 0.004 per hadronic event, ..cap omega../sup /minus// production is measured to be 0.014 +- 0.006 +- 0.004 per hadronic event, and ..xi..*/sup 0/ production is less than… more
Date: June 1, 1988
Creator: Klein, S.R.
Item Type: Refine your search to only Report
open access

Chiral gauge theory on a lattice: Are anomalous gauge theories renormalizable

Description: We discuss the quantization of chiral gauge theories by lattice regularization, carefully treating the effects of the chiral anomaly. We derive a chiral gauge invariant lattice fermion action from a chiral gauge variant Wilson fermion action without changing its partition function. By lattice power counting for this formula we show that anomalous gauge theories as well as anomaly-free gauge theories are renormalizable even in 4-dimensions. Some applications and implications of this result and p… more
Date: June 1, 1988
Creator: Aoki, S.
Item Type: Refine your search to only Article
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