Low-severity catalytic two-stage liquefaction process: Illinois coal conceptual commercial plant design and economics (open access)

Low-severity catalytic two-stage liquefaction process: Illinois coal conceptual commercial plant design and economics

Hydrocarbon Research, Inc. (HRI) is conducting a program for the United States Department of Energy (DOE) to evaluate a Catalytic Two-Stage Liquefaction (CTSL) Process. This program which runs through 1987, is a continuation of an earlier DOE sponsored program (1983--1985) at HRI to develop a new technology concept for CTSL. The earlier program included bench-scale testing of improved operating conditions for the CTSL Process on Illinois No. 6 bituminous coal and Wyoming sub-bituminous coal, and engineering screening studies to identify the economic incentive for CTSL over the single-stage H-Coal/reg sign/ Process for Illinois No. 6 coal. In the current program these engineering screening studies are extended to deep-cleaned Illinois coal and use of heavy recycle. The results from this comparison will be used as a guide for future experiments with respect to selection of coal feedstocks and areas for further process optimization. A preliminary design for CTSL of Illinois deep-cleaned coal was developed based on demonstrated bench-scale performance in Run No. 227-47(I-27), and from HRI's design experience on the Breckinridge Project and H-Coal/reg sign/ Process pilot plant operations at Catlettsburg. Complete conceptual commercial plant designs were developed for a grassroots facility using HRI's Process Planning Model. Product costs were calculated …
Date: September 1, 1988
Creator: Abrams, L. M.; Comolli, A. G.; Popper, G. A.; Wang, C. & Wilson, G.
Object Type: Report
System: The UNT Digital Library
Evaluation of automated emergency response systems (open access)

Evaluation of automated emergency response systems

Automated Emergency Response (ER) systems are playing a greater role in providing prompt and reliable predictions of the impact of inadvertent releases of hazardous materials to the environment. Observed and forecast environmental and accident source term data are input into environmental transport and dispersion models to provide dosimetry estimates used as decision making aids for responding to emergencies. Several automated ER systems have been developed for US Federal Government facilities and many are available commercially. For such systems to be useful, they must reliably and consistently deliver a timely product to the decision makers. Evaluation of the entire ER system is essential to determine the performance that can be expected from the system during an emergency. Unfortunately, seldom are ER systems evaluated as a whole. Usually Quality Assurance programs evaluate the performance of individual components of the system. Most atmospheric pollution model evaluation methods usually involve an evaluation of the predictive performance of the transport and dispersion model when compared either with experimental tracer results or results from other models. Rarely, however, is the ability of the ER system to provide timely, reliable and consistent information evaluated. Such an evaluation is vital to determine the system performance during an emergency …
Date: 1988-09~
Creator: Addis, R. P.
Object Type: Article
System: The UNT Digital Library
A search for the decay D/sup 0/. -->. /bar K//sup 0/e/sup +/e/sup -/ (open access)

A search for the decay D/sup 0/. -->. /bar K//sup 0/e/sup +/e/sup -/

A search for the decay of the charmed neutral D-mesons D/sup 0/ ..-->.. /bar K//sup 0/e/sup +/e/sup -/ is presented, based on data collected at the /psi/(3770) resonance with the Mark III detector at SPEAR. The search does not show any evidence for the occurrence of this process, leading to an upper limit on the decay branching ratio of 1.7 /center dot/ 10/sup -3/ at the 90% confidence level. No other results on this decay channel have been reported so far. 10 refs., 1 fig.
Date: September 1988
Creator: Adler, J.; Becker, J. J.; Blaylock, G. T.; Bolton, T.; Brient, J. C.; Brown, J. S. et al.
Object Type: Article
System: The UNT Digital Library
Region, Volume 15, Number 9, September/October 1988 (open access)

Region, Volume 15, Number 9, September/October 1988

Monthly newsletter of the Alamo Area Council of Governments describing news and events of relevance to the agencies.
Date: September 1988
Creator: Alamo Area Council of Governments
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
In situ ion irradiation/implantation studies in the HVEM-Tandem Facility at Argonne National Laboratory (open access)

In situ ion irradiation/implantation studies in the HVEM-Tandem Facility at Argonne National Laboratory

The HVEM-Tandem User Facility at Argonne National Laboratory interfaces two ion accelerators, a 2 MV tandem accelerator and a 650 kV ion implanter, to a 1.2 MV high voltage electron microscope. This combination allows experiments involving simultaneous ion irradiation/ion implantation, electron irradiation and electron microscopy/electron diffraction to be performed. In addition the availability of a variety of microscope sample holders permits these as well as other types of in situ experiments to be performed at temperatures ranging from 10-1300 K, with the sample in a stressed state or with simultaneous determination of electrical resistivity of the specimen. This paper summarizes the details of the Facility which are relevant to simultaneous ion beam material modification and electron microscopy, presents several current applications and briefly describes the straightforward mechanism for potential users to access this US Department of Energy supported facility. 7 refs., 1 fig., 1 tab.
Date: September 1, 1988
Creator: Allen, C. W.; Funk, L. L.; Ryan, E. A. & Taylor, A.
Object Type: Article
System: The UNT Digital Library
Relativistic klystron research for linear colliders (open access)

Relativistic klystron research for linear colliders

Relativistic klystrons are being developed as a power source for high gradient accelerator applications which include large linear electron-positron colliders, compact accelerators, and FEL sources. We have attained 200 MW peak power at 11.4 GHz from a relativistic klystron, and 140 MV/m longitudinal gradient in a short 11.4 GHz accelerator section. We report here on the design of our relativistic klystrons, the results of our experiments so far, and some of our plans for the near future. 5 refs., 9 figs., 1 tab.
Date: September 1, 1988
Creator: Allen, M. A.; Callin, R. S.; Deruyter, H.; Eppley, K. R.; Fant, K. S.; Fowkes, W. R. et al.
Object Type: Article
System: The UNT Digital Library
Pion production in relativistic collisions of nuclear drops (open access)

Pion production in relativistic collisions of nuclear drops

In a continuation of the long-standing effort of the nuclear physics community to model atomic nuclei as droplets of a specialized nuclear fluid, we have developed a hydrodynamic model for simulating the collisions of heavy nuclei at relativistic speeds. Our model couples ideal relativistic hydrodynamics with a new Monte Carlo treatment of dynamic pion production and tracking. The collective flow for low-energy (200 MeV/N) collisions predicted by this model compares favorably with results from earlier hydrodynamic calculations which used quite different numerical techniques. Our pion predictions at these lower energies appear to differ, however, from the experimental data on pion multiplicities. In this case of ultra-relativistic (200 GeV/N) collisions, our hydrodynamic model has produced baryonic matter distributions which are in reasonable agreement with recent experimental data. These results may shed some light on the sensitivity of relativistic collision data to the nuclear equation of state. 20 refs., 12 figs.
Date: September 1, 1988
Creator: Alonso, C. T.; Wilson, J. R.; McAbee, T. L. & Zingman, J. A.
Object Type: Article
System: The UNT Digital Library
A high energy neutral beam system for reactors (open access)

A high energy neutral beam system for reactors

High energy neutral beams provide a promising method of heating and driving current in steady-state tokamak fusion reactors. As an example, we have made a conceptual design of a neutral beam system for current drive on the International Thermonuclear Experimental Reactor (ITER). The system, based on electrostatic acceleration of D/sup /minus// ions, can deliver up to 100 MW of 1.6 MeV D/sup 0/ neutrals through three ports. Radiation protection is provided by locating sensitive beamline components 35 to 50 m from the reactor. In an application to a 3300 MW power reactor, a system delivering 120 MW of 2-2.4 MeV deuterium beams assisted by 21 MW of lower hybrid wave power drives 25 MA and provides an adequate plasma power gain (Q = 24) for a commercial fusion power plant. 8 refs., 1 fig., 2 tabs.
Date: September 1, 1988
Creator: Anderson, O. A.; Chan, C. F.; Cooper, W. S.; Leung, K. N.; Lietzke, A. F.; Kim, C. H. et al.
Object Type: Article
System: The UNT Digital Library
A study of K/sup +/. -->. pi. /sup +/. nu. /bar /nu// (open access)

A study of K/sup +/. -->. pi. /sup +/. nu. /bar /nu//

A description of the detector and of preliminary results of work in progress in its performance is presented here for an experiment to study the decay of K/sup +/ ..-->.. ..mu../sup +/..nu../bar /nu//. 4 refs., 12 figs., 1 tab.
Date: September 1, 1988
Creator: Atiya, M. S.; Chiang, I. H.; Frank, J. S.; Haggerty, J. S.; Ito, M.; Kycia, T. F. et al.
Object Type: Article
System: The UNT Digital Library
B meson physics with polarized electron beams at the SLC (open access)

B meson physics with polarized electron beams at the SLC

The expected large cross-section for e/sup +/e/sup -/ ..-->.. Z/sup 0/ and subsequent decay to b/bar b/ quarks makes the Z/sup 0/ an attractive place to pursue B meson physics. In addition, the big Electroweak asymmetries, thought to exist in Z/sup 0/ decays to b/bar b/ quarks with polarized electron beams, provide an outstanding handle for observation of such effects as B/sup 0/-/bar B//sup 0/ mixing. In this paper, the feasibility of such measurements is investigated and, with relatively small samples of Z/sup 0/'s (a few hundred thousand), both B/sub d/ and B/sub s/ meson mixing are shown to be measurable. The subject of CP violation in neutral B mesons is discussed last, but presently such measurements seem to be out of reach. 7 refs., 6 figs., 3 tabs.
Date: September 1988
Creator: Atwood, W. B.
Object Type: Article
System: The UNT Digital Library
High Gradient Accelerators for Linear Light Sources (open access)

High Gradient Accelerators for Linear Light Sources

Ultra-high gradient radio frequency linacs powered by relativistic klystrons appear to be able to provide compact sources of radiation at XUV and soft x-ray wavelengths with a duration of 1 picosecond or less. This paper provides a tutorial review of the physics applicable to scaling the present experience of the accelerator community to the regime applicable to compact linear light sources. 22 refs., 11 figs., 21 tabs.
Date: September 26, 1988
Creator: Barletta, W. A.
Object Type: Article
System: The UNT Digital Library
A Compact X-Ray Free Electron Laser (open access)

A Compact X-Ray Free Electron Laser

We present a design concept and simulation of the performance of a compact x-ray, free electron laser driven by ultra-high gradient rf-linacs. The accelerator design is based on recent advances in high gradient technology by a LLNL/SLAC/LBL collaboration and on the development of bright, high current electron sources by BNL and LANL. The GeV electron beams generated with such accelerators can be concerted to soft x-rays in the range from 2--10 nm by passage through short period, high fields strength wigglers as are being designed at Rocketdyne. Linear light sources of this type can produce trains of picosecond (or shorter) pulses of extremely high spectral brilliance suitable for flash holography of biological specimens in vivo and for studies of fast chemical reactions. 12 refs., 8 figs., 4 tabs.
Date: September 9, 1988
Creator: Barletta, W.; Attac, M.; Cline, D.B.; Kolonko, J.; Wang, X.; Bhowmik, A. et al.
Object Type: Article
System: The UNT Digital Library
DPDC (double-pass donor cell): A second-order monotone scheme for advection (open access)

DPDC (double-pass donor cell): A second-order monotone scheme for advection

We are developing a new, second-order, monotone scheme for advection. DPDC (i.e., double-pass donor cell) is based on Smolarkiewicz' simple, positive definite method. Both schemes are multipass methods in which upstream approximations to the truncation error are subtracted from the equations. We describe two significant improvements to Smolarkiewicz' method. First, we use a local gauge transformation to convert the method from being positive definite to the stronger condition of being monotone. Second, we analytically approximate the sum of the corrections of all the passes to use in a single corrective pass. This increases the accuracy of the method, but does not increase the order of accuracy. We compare DPDC with van Leer's method for advection of several different pulses in a constant velocity field. 5 refs., 4 figs.
Date: September 26, 1988
Creator: Beason, C W & Margolin, L G
Object Type: Article
System: The UNT Digital Library
Methods to improve routine bioassay monitoring for freshly separated, poorly transported plutonium (open access)

Methods to improve routine bioassay monitoring for freshly separated, poorly transported plutonium

Several human cases involving inhalation of plutonium oxide at Hanford have shown clearance half-times from the lung that are much longer than the 500-day half-time recommended for class Y plutonium in Publication 30 of the International Commission on Radiological Protection(ICRP). The more tenaciously retained material is referred to as super class Y plutonium. The ability to detect super class Y plutonium by current routine bioassay measurements is shown to be poor. Pacific Northwest Laboratory staff involved in the Hanford Internal Dosimetry Program investigated four methods to se if improvements in routine monitoring of workers for fresh super class Y plutonium are feasible. The methods were lung counting, urine sampling, fecal sampling, and use of diethylenetriaminepentaacetate (DTPA) to enhance urinary excretion. Use of DTPA was determined to be not feasible. Routine fecal sampling was found to be feasible but not recommended. Recommendations were made to improve the detection level for routine annual urinalysis and routine annual lung counting. 12 refs., 9 figs., 7 tabs.
Date: September 1, 1988
Creator: Bihl, D. E.; Lynch, T. P.; Carbaugh, E. H. & Sula, M. J.
Object Type: Report
System: The UNT Digital Library
LAPACK Working Note #5 : Provisional Contents (open access)

LAPACK Working Note #5 : Provisional Contents

Report on the proposed computational routines in LAPACK, describing a naming scheme for the routines, enumerates the individual routines, and includes notes on the choice of algorithms and discusses aspects of software design.
Date: September 1988
Creator: Bischof, Chris; Demmel, James; Dongarra, Jack; Du Croz, Jeremy; Greenbaum, Anne; Hammarling, Sven et al.
Object Type: Report
System: The UNT Digital Library
Topics in b-physics (open access)

Topics in b-physics

We discuss a few issues in the burgeoning field of physics of hadrons containing the b-quark. These include: A simple parameterization of the Kobayashi-Maskawa matrix featuring a triangle in the complex plane, a review of B/sub s/ and B/sub d/ mixing with special attention given to width-mixing and the CP-violating same-sign dilepton asymmetry, a discussion of the CP-violating decay B/sub d/ ..-->.. /psi/..pi../sup +/..pi../sup /minus//, and a discussion of Cp-violating rate asymmetries in the two-body decays ..lambda../sub b/ ..-->.. p..pi../sup /minus// and ..lambda../sub b/ ..-->.. pK/sup /minus//. The concluding discussion concerns generalizations beyond these specific topics. 22 refs., 6 figs.
Date: September 1, 1988
Creator: Bjorken, J. D.
Object Type: Article
System: The UNT Digital Library
The Kalina cycle and similar cycles for geothermal power production (open access)

The Kalina cycle and similar cycles for geothermal power production

This report contains a brief discussion of the mechanics of the Kalina cycle and ideas to extend the concept to other somewhat different cycles. A modified cycle which has a potential heat rejection advantage but little or no performance improvement is discussed. Then, the results of the application of the Kalina cycle and the modified cycle to a geothermal application (360/degree/F resource) are discussed. The results are compared with published results for the Kalina cycle with high temperature sources and estimates about performance at the geothermal temperatures. Finally, the conclusions of this scoping work are given along with recommendations of the direction of future work in this area. 11 refs., 4 figs., 1 tab.
Date: September 1, 1988
Creator: Bliem, C.J.
Object Type: Report
System: The UNT Digital Library
New topological invariants for non-abelian antisymmetric tensor fields from extended BRS algebra (open access)

New topological invariants for non-abelian antisymmetric tensor fields from extended BRS algebra

Extended non-linear BRS and Gauge transformations containing Lie algebra cocycles, and acting on non-abelian antisymmetric tensor fields are constructed in the context of free differential algebras. New topological invariants are given in this framework. 6 refs.
Date: September 1, 1988
Creator: Boukraa, S.; Maillet, J.M. & Nijhoff, F.
Object Type: Article
System: The UNT Digital Library
Special Applications RTG Technology Program: Thermoelectric module development summary report (open access)

Special Applications RTG Technology Program: Thermoelectric module development summary report

The primary objective of the Special Applications thermoelectric module development program is to design, develop and demonstrate the performance of a module which provides a significant thermoelectric conversion efficiency improvement over available technology for low power, relatively high voltage RTGS intended for terrestrial applications. ``Low power`` can be construed as an RTG power output of 10 watts or less, and ``high voltage`` can be considered as a load voltage of 5 volts or greater. In particular, the effort is to improve the system efficiency characteristic of the state-of-the-art bismuth telluride-based RTG system (e.g., Five-Watt RTG and Half-Watt RTG), typically 3 to 4%, to the range of 6% or better. This increase in efficiency will also permit reductions in the weight and size of RTGs in the low power range.
Date: September 1, 1988
Creator: Brittain, W. M.
Object Type: Report
System: The UNT Digital Library
Nonlinear gyrokinetic Maxwell-Vlasov equations using magnetic coordinates (open access)

Nonlinear gyrokinetic Maxwell-Vlasov equations using magnetic coordinates

A gyrokinetic formalism using magnetic coordinates is used to derive self-consistent, nonlinear Maxwell-Vlasov equations that are suitable for particle simulation studies of finite-..beta.. tokamak microturbulence and its associated anomalous transport. The use of magnetic coordinates is an important feature of this work as it introduces the toroidal geometry naturally into our gyrokinetic formalism. The gyrokinetic formalism itself is based on the use of the Action-variational Lie perturbation method of Cary and Littlejohn, and preserves the Hamiltonian structure of the original Maxwell-Vlasov system. Previous nonlinear gyrokinetic sets of equations suitable for particle simulation analysis have considered either electrostatic and shear-Alfven perturbations in slab geometry, or electrostatic perturbations in toroidal geometry. In this present work, fully electromagnetic perturbations in toroidal geometry are considered. 26 refs.
Date: September 1, 1988
Creator: Brizard, A.
Object Type: Report
System: The UNT Digital Library
Nuclear effects in J//psi/ and lepton-pair production (open access)

Nuclear effects in J//psi/ and lepton-pair production

High-energy processes in nuclear media provide important tests of quantum chromodynamics, since in principle one can use the nuclear environment to perturb and study the mechanisms involved in confinement and hadronization. In this talk several examples of nuclear effects in QCD will be discussed that affect the propagation and hadronization of quarks and gluons in nuclear matter. The issues include: possible signatures for quark-gluon plasma formation in heavy ion collisions, particularly J//psi/ production; hadronization due to jet coalescence; the limits of validity of QCD factorization formulae due to initial- and final-state interactions; formation zone physics; shadowing of the quark and gluon structure functions of nuclei; and color transparency in hard quasielastic reactions inside of nuclei. 29 refs., 4 figs.
Date: September 1, 1988
Creator: Brodsky, Stanley J.
Object Type: Article
System: The UNT Digital Library
Nuclear waste treatment program: Annual report for FY 1987 (open access)

Nuclear waste treatment program: Annual report for FY 1987

Two of the US Department of Energy's (DOE) nuclear waste management-related goals are to ensure that waste management is not an obstacle to the further development of light-water reactors and the closure of the nuclear fuel cycle and to fulfill its institutional responsibility for providing safe storage and disposal of existing and future nuclear wastes. As part of its approach to achieving these goals, the Office of Remedial Action and Waste Technology of DOE established what is now called the Nuclear Waste Treatment Program (NWTP) at the Pacific Northwest Laboratory during the second half of FY 1982. To support DOE's attainment of its goals, the NWTP is to provide technology necessary for the design and operation of nuclear waste treatment facilities by commercial enterprises as part of a licensed waste management system and problem-specific treatment approaches, waste form and treatment process adaptations, equipment designs, and trouble-shooting assistance, as required to treat existing wastes. This annual report describes progress during FY 1987 towards meeting these two objectives. 24 refs., 59 figs., 24 tabs.
Date: September 1, 1988
Creator: Brouns, R. A. & Powell, J. A. (comps.)
Object Type: Report
System: The UNT Digital Library
LFCM vitrification technology: Quarterly progress report, July-September 1987 (open access)

LFCM vitrification technology: Quarterly progress report, July-September 1987

This report describes the progress in developing, testing, applying and documenting liquid-fed ceramic melter vitrification technology. Progress in the following technical subject areas during the fourth quarter of FY 1987 is discussed: melting process chemistry and glass development, feed preparation and transfer systems, canister filling and handling systems, and process/product modeling and control.
Date: September 1, 1988
Creator: Brouns, R. A.; Allen, C. R.; Powell, J. A.; Bates, S. O.; Bray, L. A.; Budden, M. J. et al.
Object Type: Report
System: The UNT Digital Library
Economic impacts study (open access)

Economic impacts study

This is a progress report on the first phase of a project to measure the economic impacts of a rapidly changing U.S. target base. The purpose of the first phase is to designate and test the macroeconomic impact analysis model. Criteria were established for a decision-support model. Additional criteria were defined for an interactive macroeconomic impact analysis model. After a review of several models, the Economic Impact Forecast System model of the U.S. Army Construction Research Laboratory was selected as the appropriate input-output tool that can address local and regional economic analysis. The model was applied to five test cases to demonstrate its utility and define possible revisions to meet project criteria. A plan for EIFS access was defined at three levels. Objectives and tasks for scenario refinement are proposed.
Date: September 30, 1988
Creator: Brunsen, W.; Worley, W. & Frost, E.
Object Type: Report
System: The UNT Digital Library