454 Matching Results

Search Results

Results: 1 - 24 next
open access

Reconciliation Report

Description: Reconciliation report with an ending account balance of $941.54 reconciled for the period ending on March 29, 2002.
Date: April 10, 2002
Partner: UNT Libraries Special Collections
open access

Hybrid Heat Capacity - Moving Slab Laser Concept

Description: A hybrid configuration of a heat capacity laser (HCL) and a moving slab laser (MSL) has been studied. Multiple volumes of solid-state laser material are sequentially diode-pumped and their energy extracted. When a volume reaches a maximum temperature after a ''sub-magazine depth'', it is moved out of the pumping region into a cooling region, and a new volume is introduced. The total magazine depth equals the submagazine depth times the number of volumes. The design parameters are chosen to prov… more
Date: April 1, 2002
Creator: Stappaerts, E A
Partner: UNT Libraries Government Documents Department
open access

A study on D0 Run2b stave structural performance

Description: Two different structural solutions have been proposed and studied for the D0 Run2b stave (Figure 1 and Figure 3). The way the stave structural stiffness is achieved in both designs is essentially the same: the structural material is displaced as far as possible from the neutral axis in order to increase the bending moment of the stave. The agreement of the measured data with what has been theoretically predicted is excellent. The C channel stave with dog-bones glued on top of the sensor (stave … more
Date: April 1, 2002
Creator: Lanfranco, Giobatta
Partner: UNT Libraries Government Documents Department
open access

Smoke Dispersion Simulations for Prescribed Burns at Site 300, Lawrence Livermore National Laboratory

Description: Each year, as part of its ongoing commitment to safe operating practices Lawrence Livermore National Laboratory (LLNL) conducts prescribed burns at its Site 300 complex. LLNL consistently adheres to stringent, self-imposed safety standards in all of its activities, and the annual prescribed burning at Site 300 is done to prevent an accumulation of vegetative fuels (primarily grasses) that could cause an unacceptable risk of wildfire ignition. The LLNL prescribed burn procedure (Burklin, 2001) c… more
Date: April 4, 2002
Creator: Bradley, M M; Aluzzi, F J; Vogt, P J; Hall, C H; Neher, L A & Wilder, L A
Partner: UNT Libraries Government Documents Department
open access

National Ignition Facility Cryogenic Target Systems Interim Management Plan

Description: Restricted availability of funding has had an adverse impact, unforeseen at the time of the original decision to projectize the National Ignition Facility (NIF) Cryogenic Target Handling Systems (NCTS) Program, on the planning and initiation of these efforts. The purpose of this document is to provide an interim project management plan describing the organizational structure and management processes currently in place for NCTS. Preparation of a Program Execution Plan (PEP) for NCTS has been ini… more
Date: April 25, 2002
Creator: Warner, B
Partner: UNT Libraries Government Documents Department
open access

Interaction of Supernova Reminants with Interstellar Cloud: Experiments on the Nova Laser

Description: The interaction of strong shock waves, such as those generated by the explosion of supernovae with interstellar clouds, is a problem of fundamental importance in understanding the evolution and the dynamics of the interstellar medium (ISM) as it is disrupted by shock waves. Here we present the results of a series of Nova laser experiments investigating the evolution of a high density sphere embedded in a low density medium after the passage of a strong shock wave, thereby emulating the supernov… more
Date: April 18, 2002
Creator: Klein, R I; Budil, K S; S, Perry. T & Bach, D R
Partner: UNT Libraries Government Documents Department
open access

Settling Test Using Simulants to Evaluate Uranium Metal Distribution in K Basin Sludge

Description: This report presents the results of a large-scale settling test conducted with a K Basin sludge simulant that included metallic tungsten/cobalt (W/Co) fragments (density {approx}14.5 g/cm3) as a surrogate for uranium metal (density 19 g/cm3). The objective of the testing was to gain insight into how uranium metal is likely to be distributed within the K Basin sludge loaded into the large-diameter containers (LDCs) that will be used for storage at T Plant. In the LDCs, uranium metal will react w… more
Date: April 12, 2002
Creator: Schmidt, Andrew J. & Elmore, Monte R.
Partner: UNT Libraries Government Documents Department
open access

Thermal Decomposition of New and Aged LX-04 and PBX 9501

Description: One-Dimensional-Time-To-Explosion (ODTX) experiments were conducted to study the thermal decomposition of new and aged LX-04, PBX 9501, HMX class 1 and class 2, Estane and EstaneBDNPA-F (PBX 950 1 plasticized-binder) materials. New and aged LX-04 showed comparable decomposition kinetics. The data for aged PBX 9501 showed slightly longer explosion times at equivalent temperatures. Analysis of the error in time measurement is complicated by several experimental factors but the small time change a… more
Date: April 9, 2002
Creator: Tran, T. D.; Tarver, Craig M.; Idar, D. J. & Rodin, W. A.
Partner: UNT Libraries Government Documents Department
open access

Heat transfer on D Zero Run2b stave

Description: The temperature distribution on the silicon sensors and the cooling system performance for the D0 Run2b stave have been investigated. The tests have been carried out on a carbon fiber skin only stave, with and without heat input at two different chiller temperatures (-9.1 C and -19.1 C). For a bulk temperature of -14.5 C and a 14W total heat load, the stave surface has reached a peak temperature of +3.3 C, localized under the readout chip. The ''hot spot'' in the hybrid region extends about twi… more
Date: April 1, 2002
Creator: Lanfranco, Giobatta
Partner: UNT Libraries Government Documents Department
open access

History & Reflections of Engineering at Lawrence Livermore National Laboratory

Description: I thought it was important to relate how this project began. Jens Mahler, Mechanical Engineering Deputy Associate Director, recalls that during a discussion between him and Wally Decker, Wally suggested that he document the significant events and the organization of the Mechanical Engineering Department since 1952, i.e., write a history of Mechanical Engineering. Jens agreed that Wally should begin this effort. Upon learning of this, Dave Pehrson, Deputy Associate Director for Engineering, sugg… more
Date: April 18, 2002
Creator: Lafranchi, Ed
Partner: UNT Libraries Government Documents Department
open access

National NIF Diagnostic Program Interim Management Plan

Description: The National Ignition Facility (NIF) has the mission of supporting Stockpile Stewardship and Basic Science research in high-energy-density plasmas. To execute those missions, the facility must provide diagnostic instrumentation capable of observing and resolving in time events and radiation emissions characteristic of the plasmas of interest. The diagnostic instrumentation must conform to high standards of operability and reliability within the NIF environment. These exacting standards, togethe… more
Date: April 25, 2002
Creator: Warner, B
Partner: UNT Libraries Government Documents Department
open access

Composite Signatures of Nuclear and Non-Nuclear Technologies for Weapons Material and Component Measurement

Description: Attribute measurement systems are being developed in support of arms-reduction negotiations to verify compliance with the disassembly of nuclear weapons and disposition of material. The currently demonstrated attribute measurement systems utilize nuclear radiation detection technologies. Alternative low-intrusion non-nuclear measurement techniques may offer access to relevant information, e.g. mass of an item, when combined with information from a nuclear radiation measurement. This document ex… more
Date: April 17, 2002
Creator: Kouzes, Richard T. & Geelhood, Bruce D.
Partner: UNT Libraries Government Documents Department
open access

Global Ocean Storage of Anthropogenic Carbon (GOSAC)

Description: GOSAC was an EC-funded project (1998-2001) focused on improving the predictive capacity and accelerating development of global-scale, three-dimensional, ocean carbon-cycle models by means of standardized model evaluation and model intercomparison. Through the EC Environment and Climate Programme, GOSAC supported the participation of seven European modeling groups in the second phase of the larger international effort OCMIP (the Ocean Carbon-Cycle Model Intercomparison Project). OCMIP included m… more
Date: April 2, 2002
Creator: Orr, J C
Partner: UNT Libraries Government Documents Department
open access

Documentation for FY2002 BTS GPRA Metrics

Description: PNNL estimated the FY2002 energy, environmental, and financial benefits (i.e., metrics) of the technologies and practices in the U.S. Department of Energy's (DOE's) Office of Building Technology, State and Community Programs (BTS). BTS uses the estimates of benefits as part of its annual budget request. This report includes an overview of the analytical approaches used to estimate energy savings for the FY2002 appropriated budget for BTS. The report also includes descriptions of key assumptions… more
Date: April 15, 2002
Creator: Hostick, Donna J.; Belzer, David B.; Cort, Katherine A. & Dirks, James A.
Partner: UNT Libraries Government Documents Department
open access

Documentation for FY2003 BTS GPRA Metrics

Description: PNNL estimated the FY2003 energy, environmental, and financial benefits (i.e., metrics) of the technologies and practices in the U.S. Department of Energy's (DOE's) Office of Building Technology, State and Community Programs (BTS). BTS uses the estimates of benefits as part of its annual budget request. This report includes an overview of the analytical approaches used to estimate energy savings for the FY2003 appropriated budget for BTS. The report also includes descriptions of key assumptions… more
Date: April 15, 2002
Creator: Hostick, Donna J.; Belzer, David B.; Cort, Katherine A.; Dirks, James A. & Pool, Rita H.
Partner: UNT Libraries Government Documents Department
open access

Astrophysical and Astrochemical Insights into the Origin of Life

Description: Nucleosynthesis of heavy elements such as carbon in stars allowed the formation of organic molecules in space, which appear to be widespread in our Galaxy. The physical and chemical conditions - including density, temperature, ultraviolet radiation and energetic particles - determine reaction pathways and the complexity of organic molecules in different space environments. Dense interstellar clouds are the birth sites of stars of all masses and their planetary systems. During the protostellar c… more
Date: April 30, 2002
Creator: Ehrenfreund, P; Becker, L; Blank, J; Brucato, J; Colangeli, L; Derenne, S et al.
Partner: UNT Libraries Government Documents Department
open access

Thick Liquid-Walled Spheromak Magnetic Fusion Power Plant

Description: We assume a spheromak configuration can be made and sustained by a steady gun current, which injects particles, current and magnetic field, i.e., helicity injection. The equilibrium is calculated with an MHD equilibrium code, where an average beta of 10% is found. The toroidal current of 40 MA is sustained by an injection current of 100 kA (125 MW of gun power). The flux linking the gun is 1/1000th that of the flux in the spheromak. The geometry allows a flow of liquid, either molten salt, (fli… more
Date: April 8, 2002
Creator: Moir, R W; Bulmer, R H; Fowler, T K & Youssef, M Z
Partner: UNT Libraries Government Documents Department
open access

Report on Transport and Loading of Explosives in the Femtosecond Tank, Room 1711A HEAF 00-010

Description: The current OSP associated with Room 1711A located in Building 191 (HEAF) sets a limit of 5 grams Net Explosive Weight (NEW) of explosives for the room. A question was raised as to the capability of that room to withstand the overpressure created by a detonation of 5 grams NEW of explosives. Calculations were inconclusive, but indicated the wallboard would not remain intact if there was a detonation of 5 grams NEW at a distance of eight feet from the wall. These calculations did not seem logica… more
Date: April 25, 2002
Creator: Hill, D L
Partner: UNT Libraries Government Documents Department
open access

Blanket Biological Review for General Maintenance Activities Within Active Burial Grounds, 200 E and 200 W Areas, ECR #2000-200-013

Description: No plant and animal species protected under the ESA, candidates for such protection, or species listed by the Washington state government were observed in the vicinity of the proposed sites. Piper's daisy may still occur in some of the burial grounds. This is a Washington State Sensitive plant species, and as such is a Level III resource under the Hanford Site Biological Resources Management Plan. Compensatory mitigation is appropriate for this species when adverse impacts cannot be avoided. Th… more
Date: April 4, 2002
Creator: Sackschewsky, Michael R.
Partner: UNT Libraries Government Documents Department
open access

A study on D0 Run2b stave structural performance

Description: Two different structural solutions have been proposed and studied for the D0 Run2b stave. The way the stave structural stiffness is achieved in both designs is essentially the same: the structural material is displaced as far as possible from the neutral axis in order to increase the bending moment of the stave. The agreement of the measured data with what has been theoretically predicted is excellent. The C channel stave with dog-bones glued on top of the sensor (stave No.2) has outperformed t… more
Date: April 30, 2002
Creator: Lanfranco, Giobatta
Partner: UNT Libraries Government Documents Department
open access

National NIF Diagnostic Program Fiscal Year 2002 Second Quarter Report

Description: Since October 2001 the development of the facility diagnostics for NIF has been funded by the NIF Director through the National NIF Diagnostic Program (NNDP). The current emphasis of the NNDP is on diagnostics for the early NIF quad scheduled to be available for experiment commissioning in FY03. During the past six months the NNDP has set in place processes for funding diagnostics, developing requirements for diagnostics, design reviews and monthly status reporting. Those processes are describe… more
Date: April 2002
Creator: MacGowan, B
Partner: UNT Libraries Government Documents Department
open access

Heat transfer on D Zero Run2b stave

Description: The temperature distribution on the silicon sensors and the cooling system performance for the D0 Run2b stave have been investigated. The tests have been carried out on a carbon fiber skin only stave, with and without heat input at two different chiller temperatures (-9.1 C and -19.1 C). For a bulk temperature of -14.5 C and a 14W total heat load, the stave surface has reached a peak temperature of +3.3 C, localized under the readout chip. The ''hot spot'' in the hybrid region extends about twi… more
Date: April 10, 2002
Creator: Lanfranco, Giobatta
Partner: UNT Libraries Government Documents Department
Back to Top of Screen