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An 8-Element Fast-Neutron Double-Scatter Directional Detector.
We have constructed a fast-neutron double-scatter spectrometer that efficiently measures the neutron spectrum and direction of a spontaneous fission source. The device consists of two planes of organic scintillators, each having an area of 125 cm{sup 2}, efficiently coupled to photomultipliers. The four scintillators in the front plane are 2 cm thick, giving almost 25% probability of detecting an incident fission-spectrum neutron at 2 MeV by proton recoil and subsequent ionization. The back plane contains four 5-cm-thick scintillators which give a 40% probability of detecting a scattered fast neutron. A recordable double-scatter event occurs when a neutron is detected in both a front plane detector and a back plane detector within an interval of 500 nanoseconds. Each double-scatter event is analyzed to determine the energy deposited in the front plane, the time of flight between detectors, and the energy deposited in the back plane. The scattering angle of each incident neutron is calculated from the ratio of the energy deposited in the first detector to the kinetic energy of the scattered neutron.
Date:
July 31, 2005
Creator:
Vanier, P. E. & Forman, L.
Object Type:
Article
System:
The UNT Digital Library
10 MMBt/Hr AFBC Commercial Demonstration Cedar Lane Farms
The objective of this project was to demonstrate and promote the commercialization of coal-fired atmospheric fluidized bed combustion (AFBC) systems, with limestone addition for SO2 emissions control and a baghouse for particulate emissions control. This AFBC system was targeted for small scale industrial-commercial-institutional space and process heat applications in the 4-40 MMBtu/hr size range. A cost effective and environmentally acceptable AFBC technology in this size range could displace a considerable amount of heating gas and oil with coal, while resulting in significant total cost savings to the owner/operators.
Date:
October 31, 2005
Creator:
Keener, Harold M.; Wicks, Mary H.; Machamer, Tom; Hoecke, Dave; Bonk, Don & Brown, Bob
Object Type:
Report
System:
The UNT Digital Library
2005 Final Report: New Technologies for Future Colliders
This document presents an annual report on our long-term R&D grant for development of new technology for future colliders. The organizing theme of our development is to develop a compact high-field collider dipole, utilizing wind-and-react Nb3Sn coil fabrication, stress man-agement, conductor optimization, bladder preload, and flux plate suppression of magnetization multipoles. The development trail for this new technology began over four years ago with the successful testing of TAMU12, a NbTi model in which we put to a first test many of the construction details of the high-field design. We have built TAMU2, a mirror-geometry dipole containing a single coil module of the 3-module set required for the 14 Tesla design. This first Nb3Sn model was built using ITER conductor which carries much less current than high-performance conductor but enables us to prove in practice our reaction bake and impregnation strategies with ‘free’ su-perconductor. TAMU2 has been shipped to LBNL for testing. Work is beginning on the construction of TAMU3, which will contain two coil modules of the 14 Tesla design. TAMU3 has a design field of 13.5 Tesla and will enable us to fully evaluate the issues of stress management that will be important to the full design. With …
Date:
December 31, 2005
Creator:
McIntyre, Peter & McInturff, Al
Object Type:
Report
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: Economic Impact (EIT Run) USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: Community Infrastructure Assessment USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: Environmental Impacts USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: One Pager USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: Mil Value and Capacity Supporting Information USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Great Falls International Airport Air Guard Station, MT: COBRA Run USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Grand Forks Air Force Base, ND: Economic Impact (EIT Run) USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Grand Forks Air Force Base, ND: Community Infrastructure Assessment USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
2005 Report to the Base Closure and Realignment Commission: Air Force Justification Book
Grand Forks Air Force Base, ND: Environmental Impact USAF(Disregard Restriction Header and Footer)
Date:
May 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Book
System:
The UNT Digital Library
79th Texas Legislature, Second Called Session, Senate Bill 7
Bill introduced by the Texas Senate relating to limits on the use of the power of eminent domain.
Date:
August 31, 2005
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Accounting Procedures for Foreign-owned Nuclear Material Located Temporarily in the Russian Federation
None
Date:
May 31, 2005
Creator:
Pitel, V. A.; Kasumova, L. A. & Babcock, R. A.
Object Type:
Article
System:
The UNT Digital Library
Action Memorandums on Coordination on Final Base Realignment and Closure Selections
This is an Action Memo for Assistant Secretary of Navy.
Date:
August 31, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Adaptive Nodal Transport Methods for Reactor Transient Analysis
Develop methods for adaptively treating the angular, spatial, and time dependence of the neutron flux in reactor transient analysis. These methods were demonstrated in the DOE transport nodal code VARIANT and the US NRC spatial kinetics code, PARCS.
Date:
August 31, 2005
Creator:
Downar, Thomas & Lewis, E.
Object Type:
Report
System:
The UNT Digital Library
An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report: October - December 2004
Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful re-development and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase …
Date:
January 31, 2005
Creator:
Horner, Steve
Object Type:
Report
System:
The UNT Digital Library
Advanced Gasifier Pilot Plant Concept Definition
This report presents results from definition of a preferred commercial-scale advanced gasifier configuration and concept definition for a gasification pilot plant incorporating those preferred technologies. The preferred commercial gasifier configuration was established based on Cost Of Electricity estimates for an IGCC. Based on the gasifier configuration trade study results, a compact plug flow gasifier, with a dry solids pump, rapid-mix injector, CMC liner insert and partial quench system was selected as the preferred configuration. Preliminary systems analysis results indicate that this configuration could provide cost of product savings for electricity and hydrogen ranging from 15%-20% relative to existing gasifier technologies. This cost of product improvement draws upon the efficiency of the dry feed, rapid mix injector technology, low capital cost compact gasifier, and >99% gasifier availability due to long life injector and gasifier liner, with short replacement time. A pilot plant concept incorporating the technologies associated with the preferred configuration was defined, along with cost and schedule estimates for design, installation, and test operations. It was estimated that a 16,300 kg/day (18 TPD) pilot plant gasifier incorporating the advanced gasification technology and demonstrating 1,000 hours of hot-fire operation could be accomplished over a period of 33 months with a budget …
Date:
August 31, 2005
Creator:
Fusselman, Steve; Darby, Alan & Widman, Fred
Object Type:
Report
System:
The UNT Digital Library
Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants
During this quarter composite layered membrane size was scaled-up and tested for permeation performance. Sintering conditions were optimized for a new cermet containing a high permeability metal and seals were developed to allow permeability testing. Theoretical calculations were performed to determine potential sulfur tolerant hydrogen dissociation catalysts. Finally, work was finalized on mechanical and process & control documentation for a hydrogen separation unit.
Date:
October 31, 2005
Creator:
Evenson, Carl R.; Wright, Harold A.; Calihman, Adam E.; Balachandran, U.; Kleiner, Richard N.; Stephan, James E. et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced Microturbine Systems
Dept. of Energy (DOE) Cooperative Agreement DE-FC02-00-CH11061 was originally awarded to Honeywell International, Inc. â Honeywell Power Systems Inc. (HPSI) division located in Albuquerque, NM in October 2000 to conduct a program titled Advanced Microturbine Systems (AMS). The DOE Advanced Microturbines Systems Program was originally proposed as a five-year program to design and develop a high efficiency, low emissions, durable microturbine system. The period of performance was to be October 2000 through September 2005. Program efforts were underway, when one year into the program Honeywell sold the intellectual property of Honeywell Power Systems Inc. and HPSI ceased business operations. Honeywell made an internal decision to restructure the existing program due to the HPSI shutdown and submitted a formal request to DOE on September 24, 2001 to transfer the Cooperative Agreement to Honeywell Engines, Systems and Services (HES&S) in Phoenix, AZ in order to continue to offer support for DOE's Advanced Microturbine Program. Work continued on the descoped program under Cooperative Agreement No. DE-FC26-00-CH11061 and has been completed.
Date:
December 31, 2005
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Oxyfuel Boilers and Process Heaters for Cost Effective CO2 Capture and Sequestration
This annual technical progress report summarizes the work accomplished during the third year of the program, January-December 2005, in the following task areas: Task 1--Conceptual Design, Task 2--Laboratory Scale Evaluations, Task 3--OTM Development, Task 4--Economic Evaluation and Commercialization Planning and Task 5--Program Management.
Date:
December 31, 2005
Creator:
Christie, Max; Victor, Rick; Li, Juan & Hassel, Bart Van
Object Type:
Report
System:
The UNT Digital Library
Advanced Strained-Superlattice Photocathodes for Polarized Electron Sources
Polarized electrons have been essential for high-energy parity-violating experiments and measurements of the nucleon spin structure. The availability of a polarized electron beam was crucial to the success of the Stanford Linear Collider (SLC) in achieving a precise measurement of the electroweak mixing angle, and polarized electron beams will be required for all future linear colliders. Polarized electrons are readily produced by GaAs photocathode sources. When a circularly polarized laser beam tuned to the bandgap minimum is directed to the negative-electron-affinity (NEA) surface of a GaAs crystal, longitudinally polarized electrons are emitted into vacuum. The electron polarization is easily reversed by reversing the laser polarization. The important properties of these photocathodes for accelerator applications are: degree of polarization of the extracted beam; ability to extract sufficient charge to meet accelerator pulse-structure requirements; efficiency and stability of operation; and absence of any asymmetries in the beam properties (charge, position, energy, etc.) upon polarization reversal. The performance of GaAs photocathodes has improved significantly since they were first introduced in 1978 [1]. The theoretical maximum polarization of 50% for natural GaAs was first exceeded in 1991 using the lattice mismatch of a thin InGaAs layer epitaxially grown over a GaAs substrate to generate …
Date:
January 31, 2005
Creator:
Moy, Dr. Aaron
Object Type:
Report
System:
The UNT Digital Library
Advancing New 3D Seismic Interpretation Methods for Exploration and Development of Fractured Tight Gas Reservoirs
In a study funded by the U.S. Department of Energy and GeoSpectrum, Inc., new P-wave 3D seismic interpretation methods to characterize fractured gas reservoirs are developed. A data driven exploratory approach is used to determine empirical relationships for reservoir properties. Fractures are predicted using seismic lineament mapping through a series of horizon and time slices in the reservoir zone. A seismic lineament is a linear feature seen in a slice through the seismic volume that has negligible vertical offset. We interpret that in regions of high seismic lineament density there is a greater likelihood of fractured reservoir. Seismic AVO attributes are developed to map brittle reservoir rock (low clay) and gas content. Brittle rocks are interpreted to be more fractured when seismic lineaments are present. The most important attribute developed in this study is the gas sensitive phase gradient (a new AVO attribute), as reservoir fractures may provide a plumbing system for both water and gas. Success is obtained when economic gas and oil discoveries are found. In a gas field previously plagued with poor drilling results, four new wells were spotted using the new methodology and recently drilled. The wells have estimated best of 12-months production indicators of 2106, …
Date:
January 31, 2005
Creator:
Reeves, James
Object Type:
Report
System:
The UNT Digital Library
AF Form 1768 Staff Summary Sheet dtd 07/24/03 from Colonel Thomas F. Fleming, USAF Chief, Base Realignment & Closure (BRAC) SAF/IEBB to Lt Col. Marc Trost, Associate General Counsel, SAF/GCN
AF Form 1768 Staff Summary Sheet dtd 07/24/03 from Colonel Thomas F. Fleming, USAF Chief, Base Realignment & Closure (BRAC) SAF/IEBB to Lt Col. Marc Trost, Associate General Counsel, SAF/GCN forwarding Standardized, Preauthorized SAF/LL and SAF/PA Response to Inquiries regarding the Air Installation Compatible Use Zone (AICUZ) Program and BRAC 2005.
Date:
August 31, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library