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The "Athena Framework": Solving the World-wide Climate and Energy Problem

Description: The energy systems we have enjoyed for the last 100 years has resulted in the advanced standard of living in the developed world and a major emerging problem with climate change. Now we face a simultaneous realization that our reliance on fossil fuels is a source of conflict and economic disruption as well as causing potentially catastrophic global climate change. It is time to give serious thought to how to collectively solve this problem. Collective action is critical since individual effort … more
Date: October 10, 2005
Creator: Long, J S
Partner: UNT Libraries Government Documents Department
open access

Risk Assessment Using The Homeland-Defense Operational Planning System (HOPS)

Description: The Homeland-Defense Operational Planning System (HOPS), is a new operational planning tool leveraging Lawrence Livermore National Laboratory's expertise in weapons systems and in sparse information analysis to support the defense of the U.S. homeland. HOPS provides planners with a basis to make decisions to protect against acts of terrorism, focusing on the defense of facilities critical to U.S. infrastructure. Criticality of facilities, structures, and systems is evaluated on a composite matr… more
Date: October 10, 2005
Creator: Price, D E & Durling, R L
Partner: UNT Libraries Government Documents Department
open access

The KL Mix Model Applied to Directly Driven Capsules on the Omega Laser

Description: The coefficients of the KL mix model were set by Dimonte to match RT and RM instabilities as measured on the Linear Electric Motor (LEM). The KL mix model has been applied to directly-driven capsule implosions with a variety of laser energies, ablator materials, ablator thicknesses and convergence ratios. The KL calculations nearly match the observed Y{sub DD}, Y{sub DT}, Y{sub P}, T{sub ion} and implosion times for many (but not all) capsules.
Date: October 10, 2005
Creator: Tipton, R. E.; Mikaelian, K. O.; Park, H.; Dimonte, G.; Rygg, J. R. & Li, C. K.
Partner: UNT Libraries Government Documents Department
open access

Integration of Predicted Atmospheric Contaminant Plumes into ArcView GIS

Description: The Savannah River National Laboratory (SRNL) plays a key role in emergency response scenarios in which there may be a release of atmospheric chemical or radiological contamination at the DOE's Savannah River Site (SRS). Meteorologists at SRNL use a variety of tools to predict the path of the plume and levels of contamination along the path. These predictions are used to guide field teams that take sample measurements for verification. Integration of these predicted plumes as well as field meas… more
Date: October 10, 2005
Creator: Koffman, Larry D.
Partner: UNT Libraries Government Documents Department
open access

Quasicrystalline Approach to Predicting the Spinel-Nepheline Liquidus: Application to Nuclear Waste Glass Processing

Description: The crystal-melt equilibria in complex fifteen component melts are modeled based on quasicrystalline concepts. A pseudobinary phase diagram between acmite (which melts incongruently to a transition metal ferrite spinel) and nepheline is defined. The pseudobinary lies within the Al{sub 2}O{sub 3}-Fe{sub 2}O{sub 3}-Na{sub 2}O-SiO{sub 2} quaternary system that defines the crystallization of basalt glass melts. The pseudobinary provides the partitioning of species between the melt and the primary l… more
Date: October 10, 2005
Creator: Jantzen, Carol M. & Brown, Kevin G.
Partner: UNT Libraries Government Documents Department
open access

Dynamics of an Isolated Blob in the Presence of the X-Point

Description: The interplay of X-point shearing and axial plasma redistribution along a moving flux tube is discussed. Blobs limited to the main scrape-off-layer and the blobs entirely confined in the divertor region are identified. A strong effect of the radial tilt of the divertor plate on ''divertor'' blobs is found.
Date: October 10, 2005
Creator: Cohen, R. H. & Ryutov, D. D.
Partner: UNT Libraries Government Documents Department
open access

Experience With Fpga-Based Processor Core as Front-End Computer.

Description: The RHIC control system architecture follows the familiar ''standard model''. LINUX workstations are used as operator consoles. Front-end computers are distributed around the accelerator, close to equipment being controlled or monitored. These computers are generally based on VMEbus CPU modules running the VxWorks operating system. I/O is typically performed via the VMEbus, or via PMC daughter cards (via an internal PCI bus), or via on-board I/O interfaces (Ethernet or serial). Advances in FPGA… more
Date: October 10, 2005
Creator: Hoff, L. T.
Partner: UNT Libraries Government Documents Department
open access

Storage Techniques for RHIC Accelerator Data.

Description: No Description Available.
Date: October 10, 2005
Creator: Morris, J.; Binello, S.; Clifford, T.; Ottavio, T.; Lee, R. & Whalen, C.
Partner: UNT Libraries Government Documents Department
open access

An Upgrade of Magnet-Field-Driven Timing Systems at the AGS.

Description: An upgrade of the main magnet-field-driven timing systems at Brookhaven National Laboratory's Alternating Gradient Synchrotron (AGS) and Booster accelerators will be described in this paper. A novel approach using content addressable memory (CAM) is applied to overcome a weakness in the previous systems, which required a reproducible dwell field for proper operation. Upgraded from a multibus-based system to a VME-based system, the new timing system also proves easier to maintain and to diagnose… more
Date: October 10, 2005
Creator: Tian, Y. & Oerter, B.
Partner: UNT Libraries Government Documents Department
open access

Experience With Collaborative Development for the Spallation Neutron Source From a Partner Lab Perspective.

Description: Collaborative development and operation of large physics experiments is fairly common. Less common is the collaborative development or operation of accelerators. A current example of the latter is the Spallation Neutron Source (SNS). The SNS project was conceived as a collaborative effort between six DOE facilities. In the SNS case, the control system was also developed collaboratively. The SNS project has now moved beyond the collaborative development phase and into the phase where Oak Ridge N… more
Date: October 10, 2005
Creator: Hoff, L. T.
Partner: UNT Libraries Government Documents Department
open access

Isovector Pairing within the so(5) Richardson-Gaudin Exactly Solvable Model

Description: Properties of a nucleon system interacting via isovector proton-neutron pairing can be described within the so(5) generalized Richardson-Gaudin exactly-solvable model [1]. We present results for a system of 12 nucleon pairs within the full f{sub p} + g{sub 9/2} shell-model space. We discuss coupling constant dependence of the pair energies, total energy of the system, and the occupation numbers.
Date: October 10, 2005
Creator: Dimitrova, S S; Dukelsky, J; Gueorguiev, V G & Van Isacker, P
Partner: UNT Libraries Government Documents Department
open access

Ion Beam Modification of Materials

Description: This volume contains the proceedings of the 14th International Conference on Ion Beam Modification of Materials, IBMM 2004, and is published by Elsevier-Science Publishers as a special issue of Nuclear Instruments and Methods B. The conference series is the major international forum to present and discuss recent research results and future directions in the field of ion beam modification, synthesis and characterization of materials. The first conference in the series was held in Budapest, Hunga… more
Date: October 10, 2005
Creator: Averback, B; de la Rubia, T D; Felter, T E; Hamza, A V & Rehn, L E
Partner: UNT Libraries Government Documents Department
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