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DEWATERING TREATMENT SCALE-UP TESTING RESULTS OF HANFORD TANK WASTES (open access)

DEWATERING TREATMENT SCALE-UP TESTING RESULTS OF HANFORD TANK WASTES

This report documents CH2M HILL Hanford Group Inc. (CH2M HILL) 2007 dryer testing results in Richland, WA at the AMEC Nuclear Ltd., GeoMelt Division (AMEC) Horn Rapids Test Site. It provides a discussion of scope and results to qualify the dryer system as a viable unit-operation in the continuing evaluation of the bulk vitrification process. A 10,000 liter (L) dryer/mixer was tested for supplemental treatment of Hanford tank low-activity wastes, drying and mixing a simulated non-radioactive salt solution with glass forming minerals. Testing validated the full scale equipment for producing dried product similar to smaller scale tests, and qualified the dryer system for a subsequent integrated dryer/vitrification test using the same simulant and glass formers. The dryer system is planned for installation at the Hanford tank farms to dry/mix radioactive waste for final treatment evaluation of the supplemental bulk vitrification process.
Date: January 23, 2008
Creator: AR, TEDESCHI
Object Type: Article
System: The UNT Digital Library
A Les Houches Interface for BSM Generators (open access)

A Les Houches Interface for BSM Generators

We propose to combine and slightly extend two existing 'Les Houches Accords' to provide a simple generic interface between beyond-the-standard-model parton-level and event-level generators. All relevant information--particle content, quantum numbers of new states, masses, cross sections, parton-level events, etc.--is collected in one single file, which adheres to the Les Houches Event File (LHEF) standard.
Date: January 23, 2008
Creator: Alwall, J.; Boos, E.; Dudko, L.; Gigg, M.; Herquet, M.; Pukhov, A. et al.
Object Type: Report
System: The UNT Digital Library
An Instrument Design for the Accurate Determination of the Electron Beam Location in the Linac Coherent Light Source Undulator (open access)

An Instrument Design for the Accurate Determination of the Electron Beam Location in the Linac Coherent Light Source Undulator

The Linac Coherent Light Source (LCLS), currently under design, requires accurate alignment between the electron beam and each undulator's magnetic centerline. A beam finder wire (BFW) instrument has been developed to provide beam location information that is used to move the undulators to their appropriate positions. A BFW instrument is mounted at each of the 33 magnets in the undulator section. Beam detection is achieved by electrons impacting two carbon fiber wires and then sensing the downstream radiation. The wires are mounted vertically and horizontally on a wire card similar to that of a traditional wire scanner instrument. The development of the BFW presents several design challenges due to the need for high accuracy of the wires locations and the need for removal of the wires during actual operation of the LCLS (30 microns repeatability is required for the wire locations). In this paper, we present the technical specification, design criteria, mechanical design, and results from prototype tests for the BFW.
Date: January 23, 2008
Creator: Bailey, J. L.; Capatina, D.; Morgan, J. W. & Nuhn, H. D.
Object Type: Article
System: The UNT Digital Library
High-contrast imaging testbed (open access)

High-contrast imaging testbed

Several high-contrast imaging systems are currently under construction to enable the detection of extra-solar planets. In order for these systems to achieve their objectives, however, there is considerable developmental work and testing which must take place. Given the need to perform these tests, a spatially-filtered Shack-Hartmann adaptive optics system has been assembled to evaluate new algorithms and hardware configurations which will be implemented in these future high-contrast imaging systems. In this article, construction and phase measurements of a membrane 'woofer' mirror are presented. In addition, results from closed-loop operation of the assembled testbed with static phase plates are presented. The testbed is currently being upgraded to enable operation at speeds approaching 500 hz and to enable studies of the interactions between the woofer and tweeter deformable mirrors.
Date: January 23, 2008
Creator: Baker, K. L.; Silva, D. A.; Poyneer, L. A.; Macintosh, B. S.; Bauman, B. J.; Palmer, D. et al.
Object Type: Article
System: The UNT Digital Library
Islam: Sunnis and Shiites (open access)

Islam: Sunnis and Shiites

This report includes a historical background of the Sunni-Shiite split and discusses the differences in religious beliefs and practices between and within each Islamic sect as well as their similarities.
Date: January 23, 2008
Creator: Blanchard, Christopher M.
Object Type: Report
System: The UNT Digital Library
Islamic Religious Schools, Madrasas: Background. January 2008 (open access)

Islamic Religious Schools, Madrasas: Background. January 2008

This report provides an overview of madrasas, their role in the Muslim world, and issues related to their alleged links to terrorism.
Date: January 23, 2008
Creator: Blanchard, Christopher M.
Object Type: Report
System: The UNT Digital Library
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 114, No. 29, Ed. 1 Wednesday, January 23, 2008 (open access)

The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 114, No. 29, Ed. 1 Wednesday, January 23, 2008

Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date: January 23, 2008
Creator: Bridges, Steven W.
Object Type: Newspaper
System: The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 116, No. 16, Ed. 1 Wednesday, January 23, 2008 (open access)

Perry Daily Journal (Perry, Okla.), Vol. 116, No. 16, Ed. 1 Wednesday, January 23, 2008

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: January 23, 2008
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 201, Ed. 1 Wednesday, January 23, 2008 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 201, Ed. 1 Wednesday, January 23, 2008

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: January 23, 2008
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Measurements of the Propagation of EM Waves through the Vacuum Chamber of the PEP-II Low Energy Ring for Beam Diagnostics (open access)

Measurements of the Propagation of EM Waves through the Vacuum Chamber of the PEP-II Low Energy Ring for Beam Diagnostics

We present the results of our measurements of the electron cloud density in the PEP-II low energy ring (LER) by propagating a TE wave into the beam pipe. By connecting a signal generator to a beam position monitor button we can excite a signal above the vacuum chamber cut-off frequency and measure its propagation through the beam pipe with a spectrum analyzer connected to another button about 50 meters away. The measurement can be performed with different beam conditions and also at different settings of the solenoids used to reduce the build up of electrons. The presence of a modulation in the TE wave transmission, synchronous with the beam revolution frequency, which appear to increase in depth when the solenoids are switched off, seem to be directly correlated to the electron cloud density in the region between the two BPM's. In this paper we present and discuss the measurements taken in the Interaction Region 12 straight of the LER during 2006 and the first part of 2007.
Date: January 23, 2008
Creator: Byrd, John Michael; De Santis, S. & Pivi, MTF
Object Type: Article
System: The UNT Digital Library
What is a Recession, Who Decides When It Starts, and When Do They Decide? (open access)

What is a Recession, Who Decides When It Starts, and When Do They Decide?

None
Date: January 23, 2008
Creator: Cashell, Brian W.
Object Type: Report
System: The UNT Digital Library
Towards sub-10 nm resolution zone plates using the overlaynanofabrication processes (open access)

Towards sub-10 nm resolution zone plates using the overlaynanofabrication processes

Soft x-ray zone plate microscopy has proven to be a valuable imaging technique for nanoscale studies. It complements nano-analytic techniques such as electron and scanning probe microscopies. One of its key features is high spatial resolution. We developed an overlay nanofabrication process which allows zone plates of sub-20 nm zone widths to be fabricated. Zone plates of 15 nm outer zones were successfully realized using this process, and sub-15 nm resolution was achieved with these zone plates. We extend the overlay process to fabricating zone plates of 12 nm outer zones, which is expected to achieve 10 nm resolution. In addition, we have identified a pathway to realizing sub-10 nm resolution, high efficiency zone plates with tilted zones using the overlay process.
Date: January 23, 2008
Creator: Chao, Weilun; Anderson, Erik H.; Fischer, Peter & Kim, Dong-Hyun
Object Type: Article
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 23, Ed. 1 Wednesday, January 23, 2008 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 88, No. 23, Ed. 1 Wednesday, January 23, 2008

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: January 23, 2008
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Water Infrastructure Projects Designated in EPA Appropriations: Trends and Policy Implications (open access)

Water Infrastructure Projects Designated in EPA Appropriations: Trends and Policy Implications

None
Date: January 23, 2008
Creator: Copeland, Claudia
Object Type: Report
System: The UNT Digital Library
Water Quality Issues in the 110th Congress: Oversight and Implementation (open access)

Water Quality Issues in the 110th Congress: Oversight and Implementation

None
Date: January 23, 2008
Creator: Copeland, Claudia
Object Type: Report
System: The UNT Digital Library
Water Infrastructure Needs and Investment: Review and Analysis of Key Issues (open access)

Water Infrastructure Needs and Investment: Review and Analysis of Key Issues

None
Date: January 23, 2008
Creator: Copeland, Claudia & Tiemann, Mary
Object Type: Report
System: The UNT Digital Library
Gravitational Wave Detection with Atom Interferometry (open access)

Gravitational Wave Detection with Atom Interferometry

We propose two distinct atom interferometer gravitational wave detectors, one terrestrial and another satellite-based, utilizing the core technology of the Stanford 10m atom interferometer presently under construction. The terrestrial experiment can operate with strain sensitivity {approx} 10{sup -19}/{radical}Hz in the 1 Hz-10 Hz band, inaccessible to LIGO, and can detect gravitational waves from solar mass binaries out to megaparsec distances. The satellite experiment probes the same frequency spectrum as LISA with better strain sensitivity {approx} 10{sup -20}/{radical}Hz. Each configuration compares two widely separated atom interferometers run using common lasers. The effect of the gravitational waves on the propagating laser field produces the main effect in this configuration and enables a large enhancement in the gravitational wave signal while significantly suppressing many backgrounds. The use of ballistic atoms (instead of mirrors) as inertial test masses improves systematics coming from vibrations and acceleration noise, and reduces spacecraft control requirements.
Date: January 23, 2008
Creator: Dimopoulos, Savas; /Stanford U., Phys. Dept.; Graham, Peter W.; /SLAC /Stanford U., Phys. Dept.; Hogan, Jason M.; Kasevich, Mark A. et al.
Object Type: Report
System: The UNT Digital Library
Electron Bypass Line (EBL) Design: Electrons to A-line bypassing LCLS (open access)

Electron Bypass Line (EBL) Design: Electrons to A-line bypassing LCLS

Forty one years ago, September 20, 1966, the first beam entered End Station A, passed on through, and was terminated in Beam Dump East. This beam had an energy of 18.4 GeV, a record for the time. Since then, the SLAC ESA has been a mainstay facility for many high-energy physics and test beam experiments involving countless hours of data taking. Heretofore, it was assumed that with the completion and commissioning of the LCLS facility, beams from the main injector would no longer be available to this well equipped experimental facility. Fortunately, it has become clear that a bypass beamline design calling for modest modifications and using existing, soon to be surplus, components will enable continued utilization of this important facility.
Date: January 23, 2008
Creator: Fieguth, T. & Arnold, R.
Object Type: Report
System: The UNT Digital Library
Modeling of E-Cloud Build-Up in Grooved Vacuum Chambers using POSINST (open access)

Modeling of E-Cloud Build-Up in Grooved Vacuum Chambers using POSINST

Use of grooved vacuum chambers have been suggested as a way to limit electron cloud accumulation in the ILCDR. We report on simulations carried out using an augmented version of POSINST, accounting for e-cloud dynamics in the presence of grooves, and make contact with previous estimates of an effective secondary electron yield for grooved surfaces.
Date: January 23, 2008
Creator: Furman, Miguel A.; Vay, Jean-Luc; Venturini, M. & Pivi, M. T. F.
Object Type: Article
System: The UNT Digital Library
Mannford Eagle (Mannford, Okla.), Vol. 25, No. 92, Ed. 1 Wednesday, January 23, 2008 (open access)

Mannford Eagle (Mannford, Okla.), Vol. 25, No. 92, Ed. 1 Wednesday, January 23, 2008

Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date: January 23, 2008
Creator: Hughes, Dustin
Object Type: Newspaper
System: The Gateway to Oklahoma History
Judicial Security: Comparison of Legislation in the 110th Congress (open access)

Judicial Security: Comparison of Legislation in the 110th Congress

This report discusses the state of judicial security in the United States and the legislation introduced in the 110th Congress that would enhance judicial security.
Date: January 23, 2008
Creator: James, Nathan
Object Type: Report
System: The UNT Digital Library
Environmental Services Markets: Farm Bill Proposals (open access)

Environmental Services Markets: Farm Bill Proposals

This report discusses environmental services markets in relation to the farm bill (P.L. 110-234, the Food, Conservation, and Energy Act of 2008), which covers a range of farm and forestry sector services associated with improved water and air quality, increased carbon storage, and habitat protection. It gives an overview of environmental services markets as well as benefits and barriers, how they are affected by Congressional action, and possible considerations.
Date: January 23, 2008
Creator: Johnson, Renée
Object Type: Report
System: The UNT Digital Library
[News Clip: Abortion Protest] captions transcript

[News Clip: Abortion Protest]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story about a protest against abortion.
Date: January 23, 2008
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Airplane] captions transcript

[News Clip: Airplane]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story about airplanes.
Date: January 23, 2008
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library