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3,030 Matching Results
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8 GeV H- ions: Transport and injection
Fermilab is working on the design of an 8 GeV superconducting RF H{sup -} linac called the Proton Driver. The energy of H{sup -} beam will be an order of magnitude higher than the existing ones. This brings up a number of technical challenges to transport and injection of H{sup -} ions. This paper will focus on the subjects of stripping losses (including stripping by blackbody radiation, field and residual gas) and carbon foil stripping efficiency, along with a brief discussion on other issues such as Stark states lifetime of hydrogen atoms, single and multiple Coulomb scattering, foil heating and stress, radiation activation, collimation and jitter correction, etc.
Date:
May 1, 2005
Creator:
Chou, W.; Bryant, H.; Drozhdin, A.; Hill, C.; Kostin, M.; Macek, R. et al.
Object Type:
Article
System:
The UNT Digital Library
53 MHz beam loading compensation for slip stacking in the Fermilab Main Injector
Recently In-Phase and Quadrature (I&Q) was added to both the 53 MHz Feedback and Feedforward Beam Loading Compensation for Slip Stacking in the Fermilab Main Injector. With 53 MHz Feedback, we can now turn the 18 Radio Frequency (RF) Stations off down to below 100 V. In using I&Q on Feedforward, beam loading compensation to the beam on both the upper and lower frequencies of Slip Stacking can be applied as we slip the beam. I&Q theory will be discussed.
Date:
May 1, 2005
Creator:
Dey, J. & Kourbanis, I.
Object Type:
Article
System:
The UNT Digital Library
2005 DOE Hydrogen Program Review: Hydrogen Codes and Standards
A PowerPoint presentation given as part of the 2005 Hydrogen Program Review, May 24, 2005, in Washington, D.C.
Date:
May 1, 2005
Creator:
Ohi, J.
Object Type:
Presentation
System:
The UNT Digital Library
2005 Habitat Evaluation Procedure (HEP) Report for the Beaver Lake Project
On August 14, 2003, the Habitat Evaluation Procedure (HEP) was used to determine baseline habitat suitability on the Beaver Lake property, an acquisition completed by the Kalispel Tribe of Indians in November 2002. Evaluation species and appropriate models include bald eagle, black-capped chickadee, Canada goose, mallard, muskrat, yellow warbler, and white-tailed deer. Habitat Suitability Index (HSI) values were visually estimated and agreed upon by all HEP team members. The Beaver Lake Project provides a total of 232.26 Habitat Units (HUs) for the species evaluated. Conifer forest habitat provides 136.58 HUs for bald eagle, black-capped chickadee, mallard, and white-tailed deer. Forested wetland habitat provides 20.02 HUs for bald eagle, black-caped chickadee, mallard, and white-tailed deer. Scrub-shrub wetland habitat provides 7.67 HUs for mallard, yellow warbler, and white-tailed deer. Grassland meadow provides 22.69 HUs for Canada goose and mallard. Emergent wetlands provide 35.04 HUs for Canada goose, mallard, and muskrat. Open water provided 10.26 HUs for Canada goose, mallard, and muskrat. The objective of using HEP at the Beaver Lake Project and other protected properties is to document the quality and quantity of available habitat for selected wildlife species. In this way, HEP provides information on the relative value of the same …
Date:
May 2005
Creator:
Entz, Ray
Object Type:
Report
System:
The UNT Digital Library
2005 Habitat Evaluation Procedure (HEP) Report for the Gamblin Lake Project
On August 12, 2003, the Habitat Evaluation Procedure (HEP) was used to determine baseline habitat suitability on the Gamblin Lake property, an acquisition completed by the Kalispel Tribe of Indians in December 2002. Evaluation species and appropriate models include bald eagle, black-capped chickadee, mallard, muskrat, and white-tailed deer. Habitat Suitability Index (HSI) values were visually estimated and agreed upon by all HEP team members. The Gamblin Lake Project provides a total of 273.28 Habitat Units (HUs) for the species evaluated. Conifer forest habitat provides 127.92 HUs for bald eagle, black-capped chickadee, mallard, and white-tailed deer. Forested wetland habitat provides 21.06 HUs for bald eagle, black-caped chickadee, mallard, and white-tailed deer. Wet meadow provides 78.05 HUs for Canada goose and mallard. Emergent wetland habitat provides 46.25 HUs for mallard, muskrat, and Canada goose. The objective of using HEP at the Gamblin Lake Project and other protected properties is to document the quality and quantity of available habitat for selected wildlife species. In this way, HEP provides information on the relative value of the same area at future points in time so that the effect of management activities on wildlife habitat can be quantified. When combined with other tools, the baseline HEP …
Date:
May 2005
Creator:
Entz, Ray
Object Type:
Report
System:
The UNT Digital Library
2005 Habitat Evaluation Procedure (HEP) Report for the Priest River Project
On July 6, 2004, the Habitat Evaluation Procedure (HEP) was used to determine baseline habitat suitability on the Priest River property, an acquisition completed by the Kalispel Tribe of Indians in 2001. Evaluation species and appropriate models include bald eagle, black-capped chickadee, Canada goose, mallard, yellow warbler, and white-tailed deer. Habitat Suitability Index (HSI) values were visually estimated and agreed upon by all HEP team members. The Priest River Project provides a total of 140.73 Habitat Units (HUs) for the species evaluated. Conifer forest habitat provides 60.05 HUs for bald eagle, black-capped chickadee, and white-tailed deer. Grassland meadow habitat provides 7.39 HUs for Canada goose and mallard. Scrub-shrub vegetation provides 71.13 HUs for mallard, yellow warbler, and white-tailed deer. Open water habitat provides 2.16 HUs for Canada goose and mallard. The objective of using HEP at the Priest River Project and other protected properties is to document the quality and quantity of available habitat for selected wildlife species. In this way, HEP provides information on the relative value of the same area at future points in time so that the effect of management activities on wildlife habitat can be quantified. When combined with other tools, the baseline HEP will be …
Date:
May 2005
Creator:
Entz, Ray
Object Type:
Report
System:
The UNT Digital Library
2005 Research Briefs : Materials and Process Sciences Center.
This report is the latest in a continuing series that highlights the recent technical accomplishments associated with the work being performed within the Materials and Process Sciences Center. Our research and development activities primarily address the materials-engineering needs of Sandia's Nuclear-Weapons (NW) program. In addition, we have significant efforts that support programs managed by the other laboratory business units. Our wide range of activities occurs within six thematic areas: Materials Aging and Reliability, Scientifically Engineered Materials, Materials Processing, Materials Characterization, Materials for Microsystems, and Materials Modeling and Simulation. We believe these highlights collectively demonstrate the importance that a strong materials-science base has on the ultimate success of the NW program and the overall DOE technology portfolio.
Date:
May 1, 2005
Creator:
Cieslak, Michael J.
Object Type:
Report
System:
The UNT Digital Library
79th Texas Legislature, Regular Session, House Bill 81, Chapter 165
Bill introduced by the Texas House of Representatives relating to release by the comptroller of unclaimed property subject to a child support lien.
Date:
May 2005
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
79th Texas Legislature, Regular Session, Senate Bill 189
Bill introduced by the Texas Senate relating to the operation of the Texas School for the Blind and Visually Impaired.
Date:
May 2005
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
79th Texas Legislature, Regular Session, Senate Bill 552, Chapter 109
Bill introduced by the Texas Senate relating to the creation of magistrates in Nolan County.
Date:
May 2005
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
The Administration of Spain Under Charles V, Spain's New Charlemagne
Charles I, King of Spain, or Charles V, Holy Roman Emperor, was the most powerful ruler in Europe since Charlemagne. With a Germanic background, and speaking French, Charles became King of Spain in 1516. Yet secondary sources and available sixteenth century Spanish sources such as Spanish Royal Council records, local records of Castro Urdiales in Castile, and Charles's correspondence show that he continued the policies of his predecessors in Spain, Ferdinand of Aragon and Isabella of Castile. He strove to strengthen his power and unify Spain and his empire using Castilian strength, a Castilian model of government, Roman law, religion, his strong personality, and a loyal and talented bureaucracy. Charles desired to be another Charlemagne, but with his base of power in Spain.
Date:
May 2005
Creator:
Beard, Joseph
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Adsorption of lanthanum to goethite in the presence of gluconate
Adsorption of Lanthanum to Goethite in the Presence of Gluconic Acid L. C. HULL,1 S. E. PEPPER2 AND S. B. CLARK2 1Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID (hulllc@inel.gov) 2Washington State University, Pullman, WA (spepper@wsu.edu), (s_clark@wsu.edu) Lanthanide and trivalent-actinide elements in radioactive waste can pose risks to humans and ecological systems for many years. Organic complexing agents, from natural organic matter or the degradation of waste package components, can alter the mobility of these elements. We studied the effect of gluconic acid, as an analogue for cellulose degradation products, on the adsorption of lanthanum, representing lanthanide and trivalent-actinide elments, to goethite, representing natural iron minearals and degradation products of waste packages. Batch pH adsorption edge experiments were conducted with lanthanum alone, and with lanthanum and gluconate at a 1:1 mole ratio. Lanthanum concentrations studied were 0.1, 1, and 10 mM, covering a range from 10% to 1000% of the calculated available adsorption sites on goethite. In the absence of gluconate, lanthanum was primarily present in solution as free lanthanum ion. With gluconate present, free lanthanum concentration in solution decreased with increasing pH as step-wise deprotonation of the gluconate molecule increased the fraction lanthanum complexed with gluconate. Adsorption to …
Date:
May 1, 2005
Creator:
Hull, Laurence C.; Pepper, Sarah & Clark, Sue
Object Type:
Article
System:
The UNT Digital Library
Advanced Fuel Cell Membranes Based on Heteropolyacids
A PowerPoint presentation given as part of the 2005 Hydrogen Program Review, May 24, 2005, in Washington, D.C.
Date:
May 1, 2005
Creator:
Turner, John A.; Pern, John; Herring, Andrew M.; Dec, Steven F.; Meng, Fanqin; Malers, Jennifer L. et al.
Object Type:
Presentation
System:
The UNT Digital Library
Advances in the understanding and operations of superconducting colliders
Chromaticity drift during injection is a well-known phenomenon in superconducting colliders, such as the Tevatron, HERA and RHIC. Imperfect compensation of the drift effects can contribute to beam loss and emittance growth. It is caused by the drift of the sextupole component in the dipole magnets due to current redistribution in its superconducting coils. Recently extensive studies of chromaticity drift were conducted at the Tevatron, aiming at the improvement of the luminosity performance in the ongoing run II. These studies included not only beam experiments, but also extensive off-line magnetic measurements on spare Tevatron dipoles. Less known, until recently, is that chromaticity drift is often accompanied by tune and coupling drift. This was recently discovered in the Tevatron. We believe that these effects are the product of systematic beam offset in conjunction with the sextupole drifts (and their compensation in the chromaticity correctors). These discoveries are most relevant to the upcoming LHC, where the drift effects will have even more dramatic consequences given the high beam current. It is therefore not a surprise that CERN has been the source of major advances in the understanding of dynamic effects during the LHC superconducting magnet development. The following will briefly review the …
Date:
May 1, 2005
Creator:
Annala, G.; Bauer, P.; Bottura, L.; Martens, M. A.; Sammut, N.; Velev, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 107, No. 26, Ed. 1 Sunday, May 1, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 1, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Amon Carter: The Founder of Modern Fort Worth, 1930-1955
From 1930 to 1955, Amon Carter, publisher of the Fort Worth Star-Telegram, exerted his power to create modern Fort Worth. Carter used his stature as the publisher of the city's major newspaper to build a modern city out of this livestock center. Between 1930 and 1955, Carter lobbied successfully for New Deal funds for Fort Worth, persuaded Consolidated Aircraft to build an airplane plant in the city, and convinced Burlington Railways to stay in the city. He also labored unsuccessfully to have the Trinity River Canal built and to secure a General Motors plant for Fort Worth. These efforts demonstrate that Carter was indeed the founder of modern Fort Worth.
Date:
May 2005
Creator:
Cervantez, Brian
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Analysis of On-Campus Housing at Public Rural Community Colleges in the United States
This study has two purposes. First is to dispel myths that there are no residence halls at community colleges. Second is to discuss the ways in which these residence halls are administered, the amenities offered to students, the benefits of residence halls, and their future in community colleges. The study is based upon the Katsinas, Lacey and Hardy 2004 classifications and divides community colleges into 7 categories: Urban multi campus, Urban single campus, Suburban multi campus, Suburban single campus, and Rural small, medium and large. Included in the study are tables of data received from an original survey sent to 232 community college CEOs who reported to the US Department of Education that they had residence halls at their campus. The results indicate that a significant number of community colleges with residence halls exist, particularly at rural community colleges, that they bring significant financial gain to the colleges, and they append numerous benefits to students and to student life at these colleges. Residence halls are housed in divisions of student services and directed by experienced student affairs professionals. The study concludes with recommendations for policy as well as practice, the most important of which calls for more accurate data collection …
Date:
May 2005
Creator:
Moeck, Pat Gallagher
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Analysis of the Use of Wind Energy to Supplement the Power Needs at McMurdo Station and Amundsen-Scott South Pole Station, Antarctica
This report summarizes an analysis of the inclusion of wind-driven power generation technology into the existing diesel power plants at two U.S. Antarctic research stations, McMurdo and Amundsen-Scott South Pole Station. Staff at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the analysis. Raytheon Polar Services, which currently holds the private sector support contract for the two research stations, was a major contributor to this report. To conduct the analysis, available data were obtained on the wind resources, power plant conditions, load, and component cost. Whenever possible, we validated the information. We then used NREL's Hybrid2 power system modeling software to analyze the potential and cost of using wind turbine generators at the two aforementioned facilities. Unfortunately, the power systems and energy allocations at McMurdo and South Pole Station are being redeveloped, so it is not possible to validate future fuel use. This report is an initial assessment of the potential use of wind energy and should be followed by further, more detailed analysis if this option is to be considered further.
Date:
May 1, 2005
Creator:
Baring-Gould, I.; Robichaud, R. & McLain, K.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the Use of Wind Energy to Supplement the Power Needs at McMurdo Station and Amundsen-Scott South Pole Station, Antarctica (Poster)
This poster summarizes the analysis of the inclusion of wind-driven power generation technology into the existing diesel power plants at two U.S. Antarctic research stations, McMurdo and Amundsen-Scott South Pole Station. Staff at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the analysis. Available data were obtained on the wind resources, power plant conditions, load, and component cost. We then used NREL's Hybrid2 power system modeling software to analyze the potential and cost of using wind turbine generators at the two aforementioned facilities.
Date:
May 1, 2005
Creator:
Baring-Gould, E. I.; Robichaud, R. & McLain, K.
Object Type:
Article
System:
The UNT Digital Library
An analytical and computational study of combined rate and size effects on material properties.
The recent interests in developing multiscale model-based simulation procedures have brought about the challenging tasks of bridging different spatial and temporal scales within a unified framework. However, the research focus has been on the scale effect in the spatial domain with the loading rate being assumed to be quasi-static. Although material properties are rate-dependent in nature, little has been done in understanding combined loading rate and specimen size effects on the material properties at different scales. In addition, the length and time scales that can be probed by the molecular level simulations are still fairly limited due to the limitation of computational capability. Based on the experimental and computational capabilities available, therefore, an attempt is made in this report to formulate a hyper-surface in both spatial and temporal domains to predict combined size and rate effects on the mechanical properties of engineering materials. To demonstrate the features of the proposed hyper-surface, tungsten specimens of various sizes under various loading rates are considered with a focus on the uniaxial loading path. The mechanical responses of tungsten specimens under other loading paths are also explored to better understand the size effect. It appears from the preliminary results that the proposed procedure might …
Date:
May 1, 2005
Creator:
Fang, Huei Eliot; Chen, Zhen (University of Missouri-Columbia, Columbia, MO); Shen, Luming () University of Missouri-Columbia, Columbia, MO) & Gan, Yong (University of Missouri-Columbia, Columbia, MO)
Object Type:
Report
System:
The UNT Digital Library
Angular dependence of the magnetization reversal in exchangebiased Fe/MnF2
A detailed study of exchange-biased Fe/MnF{sub 2} bilayers using magneto-optical Kerr Effect shows that the magnetization reversal occurs almost fully through domain wall nucleation and propagation for external fields parallel to the exchange bias direction. For finite angles {phi} between bias and external field the magnetization is aligned perpendicular to the field cooling direction for a limited field range for decreasing fields. For external fields perpendicular to the bias direction the magnetization aligns with the field cooling direction for descending and ascending fields before fully reversing. The field range for which the magnetization is close to perpendicular to the external field can be estimated using a simple effective field model.
Date:
May 1, 2005
Creator:
Arenholz, Elke & Liu, Kai
Object Type:
Article
System:
The UNT Digital Library
Application of Advanced CAE Methods for Quality and Durability of Fuel Cell Components
A PowerPoint presentation given as part of the 2005 Hydrogen Program Review, May 24, 2005, in Washington, D.C.
Date:
May 1, 2005
Creator:
Kelly, Kenneth J.; Stathopoulus, Jim & Vlahinos, Andreas
Object Type:
Presentation
System:
The UNT Digital Library
Application of independent component analysis for beam diagnosis
The independent component analysis (ICA) is applied to analyze simultaneous multiple turn-by-turn beam position monitor (BPM) data of synchrotrons. The sampled data are decomposed to physically independent source signals, such as betatron motion, synchrotron motion and other perturbation sources. The decomposition is based on simultaneous diagonalization of several unequal time covariance matrices, unlike the model independent analysis (MIA), which uses equal-time covariance matrix only. Consequently the new method has advantage over MIA in isolating the independent modes and is more robust under the influence of contaminating signals of bad BPMs. The spatial pattern and temporal pattern of each resulting component (mode) can be used to identify and analyze the associated physical cause. Beam optics can be studied on the basis of the betatron modes. The method has been successfully applied to the Booster Synchrotron at Fermilab.
Date:
May 1, 2005
Creator:
Huang, X.; Lee, S. Y.; Prebys, Eric & Tomlin, Ray
Object Type:
Article
System:
The UNT Digital Library
Art Wear '05
Video of the ArtWear 2005 senior fashion show hosted by the University of North Texas on May 6, 2005.
Date:
2005-05~
Creator:
University of North Texas. Center for Media Production.
Object Type:
Video
System:
The UNT Digital Library