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1.3 GHz superconducting RF cavity program at Fermilab
At Fermilab, 9-cell 1.3 GHz superconducting RF (SRF) cavities are prepared, qualified, and assembled into cryomodules (CMs) for Project X, an International Linear Collider (ILC), or other future projects. The 1.3 GHz SRF cavity program includes targeted R&D on 1-cell 1.3 GHz cavities for cavity performance improvement. Production cavity qualification includes cavity inspection, surface processing, clean assembly, and one or more cryogenic low-power CW qualification tests which typically include performance diagnostics. Qualified cavities are welded into helium vessels and are cryogenically tested with pulsed high-power. Well performing cavities are assembled into cryomodules for pulsed high-power testing in a cryomodule test facility, and possible installation into a beamline. The overall goals of the 1.3 GHz SRF cavity program, supporting facilities, and accomplishments are described.
Date:
March 1, 2011
Creator:
Ginsburg, C. M.; Arkan, T.; Barbanotti, S.; Carter, H.; Champion, M.; Cooley, L. et al.
Object Type:
Article
System:
The UNT Digital Library
8(a) Program: The Importance of Effective Fraud Prevention Controls
Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses the results of our prior investigation of the Small Business Administration's (SBA) 8(a) Business Development Program. SBA's 8(a) program, named for a section of the Small Business Act, is a development program created to help small, disadvantaged businesses compete in the American economy and access the federal procurement market. To participate in the program, a firm must be certified as meeting several criteria, including: be a small business as defined by SBA; be unconditionally owned and controlled by one or more socially and economically disadvantaged individuals who are of good character and citizens of the United States; and show potential for success. Upon certification, firms can obtain federal contracts without competing fully and openly for the work. For example, agencies are permitted to enter into sole-source contracts after soliciting and negotiating with only one 8(a) company. They also can participate in restricted competitions for federal contracts, known as set-asides, open to only 8(a) companies. In March 2010, GAO issued two companion reports on the 8(a) program, one focused on internal control procedures and processes that SBA has implemented to ensure that only eligible firms participate …
Date:
March 3, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
08-ERD-071 Final Report: New Molecular Probes and Catalysts for Bioenergy Research
A major thrust in bioenergy research is to develop innovative methods for deconstructing plant cell wall polymers, such as cellulose and lignin, into simple monomers that can be biologically converted to ethanol and other fuels. Current techniques for monitoring a broad array of cell wall materials and specific degradation products are expensive and time consuming. To monitor various polymers and assay their breakdown products, molecular probes for detecting specific carbohydrates and lignins are urgently needed. These new probes would extend the limited biochemical techniques available, and enable realtime imaging of ultrastructural changes in plant cells. Furthermore, degradation of plant biomass could be greatly accelerated by the development of catalysts that can hydrolyze key cell wall polysaccharides and lignin. The objective of this project was to develop cheap and efficient DNA reagents (aptamers) used to detect and quantify polysaccharides, lignin, and relevant products of their breakdown. A practical goal of the research was to develop electrochemical aptamer biosensors, which could be integrated into microfluidic devices and used for high-throughput screening of enzymes or biological systems that degrade biomass. Several important model plant cell wall polymers and compounds were targeted for specific binding and purification of aptamers, which were then tested by …
Date:
March 7, 2011
Creator:
Thelen, M. P.; Rowe, A. A.; Siebers, A. K. & Jiao, Y.
Object Type:
Report
System:
The UNT Digital Library
50 MW X-BAND RF SYSTEM FOR A PHOTOINJECTOR TEST STATION AT LLNL
In support of X-band photoinjector development efforts at LLNL, a 50 MW test station is being constructed to investigate structure and photocathode optimization for future upgrades. A SLAC XL-4 klystron capable of generating 50 MW, 1.5 microsecond pulses will be the high power RF source for the system. Timing of the laser pulse on the photocathode with the applied RF field places very stringent requirements on phase jitter and drift. To achieve these requirements, the klystron will be powered by a state of the art, solid-state, high voltage modulator. The 50 MW will be divided between the photoinjector and a traveling wave accelerator section. A high power phase shifter is located between the photoinjector and accelerator section to adjust the phasing of the electron bunches with respect to the accelerating field. A variable attenuator is included on the input of the photoinjector. The distribution system including the various x-band components is being designed and constructed. In this paper, we will present the design, layout, and status of the RF system.
Date:
March 11, 2011
Creator:
Marsh, R A; Anderson, S G; Barty, C J; Beer, G K; Cross, R R; Ebbers, C A et al.
Object Type:
Article
System:
The UNT Digital Library
401(K) Plans: Certain Investment Options and Practices That May Restrict Withdrawals Not Widely Understood
A letter report issued by the Government Accountability Office with an abstract that begins "401(k) plan sponsors are responsible for offering an array of appropriate investment options, and participants are responsible for directing their investments among those options. While participants expect to be able to switch investment options or withdraw money from their accounts, during the recent economic downturn, some 401(k) plan sponsors and participants found that they were restricted from doing so. GAO was asked to (1) identify some of the specific investments and practices that prevented plan sponsors and participants from accessing their 401(k) plan assets and (2) determine any changes the Department of Labor (Labor) could make to assist sponsors in understanding the challenges posed by the investments and practices that restricted withdrawals. To do this, GAO reviewed relevant federal laws and regulations and consulted with experts, federal officials, service providers, and plan sponsors."
Date:
March 10, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
401(k) Plans: Issues Involving Securities Lending in Plan Investments
Testimony issued by the Government Accountability Office with an abstract that begins "Securities lending can be a relatively straightforward way for plan sponsors and participants to increase their return on 401(k) investments. However, securities lending can also present a number of challenges to plan participants and plan sponsors. GAO was asked to explain how securities lending with cash collateral reinvestment works in relation to 401(k) plan investments, who bears the risks, and what are some of the challenges plan participants and plan sponsors face in understanding securities lending with cash collateral reinvestment. In this testimony, GAO discusses its recent work regarding securities lending with cash collateral reinvestment. GAO is making no new recommendations in this statement but continues to believe that the Department of Labor (Labor) can take action to help plan sponsors of 401(k) plans and plan participants to understand the role, risk, and benefits of securities lending with cash collateral reinvestment in relation to 401(k) plan investments. Specifically, GAO recommended that Labor provide more guidance to plan sponsors about fees and returns when plan assets are utilized in securities lending with cash collateral reinvestment, amend its participant disclosure regulation to include provisions specific to securities lending with cash …
Date:
March 16, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
1099 Information Reporting Requirements and Penalties as Modified by the Patient Protection and Affordable Care Act and the Small Business Jobs Act of 2010
This report discuses the 2010 expansion of reporting requirements listed in IRC (Internal Revenue Code) 6041. The controversy in these expansions lies in the burden the expansion imposes on small businesses. The report also describes the pieces of legislation that have amended IRC 6041, and the implications of that legislation along with the consequences of IRC 6041.
Date:
March 4, 2011
Creator:
Pettit, Carol A. & Liu, Edward C.
Object Type:
Report
System:
The UNT Digital Library
16S rRNA gene microarray analysis of microbial communities in ethanol-stimulated subsurface sediment
None
Date:
March 15, 2011
Creator:
Mohanty, S. R.; Kollah, B.; Brodie, E. L.; Hazen, T. C. & Roden, E. E.
Object Type:
Article
System:
The UNT Digital Library
2007 Estimated International Energy Flows
An energy flow chart or 'atlas' for 136 countries has been constructed from data maintained by the International Energy Agency (IEA) and estimates of energy use patterns for the year 2007. Approximately 490 exajoules (460 quadrillion BTU) of primary energy are used in aggregate by these countries each year. While the basic structure of the energy system is consistent from country to country, patterns of resource use and consumption vary. Energy can be visualized as it flows from resources (i.e. coal, petroleum, natural gas) through transformations such as electricity generation to end uses (i.e. residential, commercial, industrial, transportation). These flow patterns are visualized in this atlas of 136 country-level energy flow charts.
Date:
March 10, 2011
Creator:
Smith, C. A.; Belles, R. D. & Simon, A. J.
Object Type:
Report
System:
The UNT Digital Library
2010 Annual Summary Report for the Area 3 and Area 5 Radioactive Management Sites at the Nevada National Security Site, Nye County, Nevada
The U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office performed an annual review of the Area 3 and Area 5 Radioactive Waste Management Site (RWMS) Performance Assessments (PAs) and Composite Analyses (CAs) in fiscal year (FY) 2010. This annual summary report presents data and conclusions from the FY 2010 review, and determines the adequacy of the PAs and CAs. Operational factors (e.g., waste forms and containers, facility design, and waste receipts), closure plans, monitoring results, and research and development (R&D) activities were reviewed to determine the adequacy of the PAs. Likewise, the environmental restoration activities at the Nevada National Security Site (NNSS) (formerly the Nevada Test Site) relevant to the sources of residual radioactive material that are considered in the CAs, the land-use planning, and the results of the environmental monitoring and R&D activities were reviewed to determine the adequacy of the CAs.
Date:
March 1, 2011
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
2010 Diffraction Methods in Structural Biology
Advances in basic methodologies have played a major role in the dramatic progress in macromolecular crystallography over the past decade, both in terms of overall productivity and in the increasing complexity of the systems being successfully tackled. The 2010 Gordon Research Conference on Diffraction Methods in Structural Biology will, as in the past, focus on the most recent developments in methodology, covering all aspects of the process from crystallization to model building and refinement, complemented by examples of structural highlights and complementary methods. Extensive discussion will be encouraged and it is hoped that all attendees will participate by giving oral or poster presentations, the latter using the excellent poster display area available at Bates College. The relatively small size and informal atmosphere of the meeting provides an excellent opportunity for all participants, especially younger scientists, to meet and exchange ideas with leading methods developers.
Date:
March 10, 2011
Creator:
Gonzalez, Ana
Object Type:
Article
System:
The UNT Digital Library
2010 Dry and 2009 - 2010 Wet Season Branchiopod Survey Report, Site 300
Lawrence Livermore National Laboratory (LLNL) requested that Condor Country Consulting, Inc. (CCCI) perform wet season surveys and manage the dry season sampling for listed branchiopods in two ponded locations within the Site 300 Experimental Test Site. Site 300 is located in Alameda and San Joaquin Counties, located between the Cities of Livermore and Tracy. The two pool locations have been identified for possible amphibian enhancement activities in support of the Compensation Plan for impacts tied to the Building 850 soil clean-up project. The Building 850 project design resulted in formal consultation with the U.S. Fish and Wildlife Service (USFWS) as an amendment (File 81420-2009-F-0235) to the site-wide Biological Opinion (BO) (File 1-1-02-F-0062) in the spring of 2009 and requires mitigation for the California tiger salamander (AMCA, Ambystoma californiense) and California red-legged frog (CRLF, Rana draytonii) habitat loss. Both pools contain breeding AMCA, but do not produce metamorphs due to limited hydroperiod. The pool to the southeast (Pool BC-FS-2) is the preferred site for amphibian enhancement activities, and the wetland to northwest (Pool OA-FS-1) is the alternate location for enhancement. However, prior to enhancement, LLNL has been directed by USFWS (BO Conservation Measure 17 iii) to 'conduct USFWS protocol-level branchiopod surveys …
Date:
March 14, 2011
Creator:
Dexter, W.
Object Type:
Report
System:
The UNT Digital Library
The 2010 Oil Spill: MMS/BOEMRE and NEPA
This report reviews the environmental procedures required following the explosion of an oil well on a tract leased by BP from the federal government.
Date:
March 2, 2011
Creator:
Alexander, Kristina
Object Type:
Report
System:
The UNT Digital Library
2011 GASEOUS IONS GORDON RESEARCH CONFERENCE
The Gaseous Ions: Structures, Energetics and Reactions Gordon Research Conference will focus on ions and their interactions with molecules, surfaces, electrons, and light. The conference will cover theory and experiments, and systems ranging from molecular to biological to clusters to materials. The meeting goal continues to be bringing together scientists interested in fundamentals, with those applying fundamental phenomena to a wide range of practical problems. Each of the ten conference sessions will focus on a topic within this spectrum, and there will also be poster sessions for contributed papers, with sufficient space and time to allow all participants to present their latest results. To encourage active participation by young investigators, about ten of the poster abstracts will be selected for 15 minute 'hot topic' talks during the conference sessions. Hot topic selection will be done about a month before the meeting. Funds should be available to offset the participation cost for young investigators.
Date:
March 4, 2011
Creator:
Anderson, Scott
Object Type:
Article
System:
The UNT Digital Library
2011 Remediation Effectiveness Report for the U.S. Department of Energy Oak Ridge Reservation, Oak Ridge, Tennessee - Data and Evaluations
Under the requirements of the Oak Ridge Reservation (ORR) Federal Facility Agreement (FFA) established between the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency, (EPA) and the Tennessee Department of Environment and Conservation (TDEC) in 1992, all environmental restoration activities on the ORR are performed in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). Since the 1990s, the environmental restoration activities have experienced a gradual shift from characterization to remediation. As this has occurred, it has been determined that the assessment of the individual and cumulative performance of all ORR CERCLA remedial actions (RAs) is most effectively tracked in a single document. The Remediation Effectiveness Report (RER) is an FFA document intended to collate all ORR CERCLA decision requirements, compare pre- and post-remediation conditions at CERCLA sites, and present the results of any required post-decision remediation effectiveness monitoring. First issued in 1997, the RER has been reissued annually to update the performance histories of completed actions and to add descriptions of new CERCLA actions. Monitoring information used in the 2011 RER to assess remedy performance was collected and/or compiled by DOE's Water Resources Restoration Program (WRRP). Only data used to assess performance of …
Date:
March 1, 2011
Creator:
Bechtel Jacobs
Object Type:
Report
System:
The UNT Digital Library
2011 Tax Filing: IRS Dealt with Challenges to Date but Needs Additional Authority to Verify Compliance
A letter report issued by the Government Accountability Office with an abstract that begins "Every tax filing season is a large-scale undertaking during which the Internal Revenue Service (IRS) interacts with taxpayers by processing returns, issuing refunds, answering telephone calls, and providing other services, both face-to-face and on its Web site. As part of processing returns and before refunds are issued, IRS uses its statutory authority to automatically correct errors. This allows IRS to avoid costly and burdensome audits and taxpayers to be made aware of additional taxes owed before being required to pay interest and penalties. For the 2011 filing season, IRS is administering a number of complex tax law changes, including the Residential Energy Property Tax Credit and provisions enacted in December 2010 as part of the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010 (commonly known as the tax extenders). Other changes for the 2011 filing season include paid preparer regulations and expanded efforts to provide refunds on debit cards. In 2011, for the first time, paid preparers must register with IRS. In the future, certain paid preparers will be subject to competency tests and continuing education requirements to be allowed to prepare tax …
Date:
March 29, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
22X mask cleaning effects on EUV lithography process and lifetime
For this paper, we evaluated the impact of repetitive cleans on a photomask that was fabricated and patterned for extreme ultraviolet lithography exposure. The lithographic performance of the cleaned mask, in terms of process window and line edge roughness, was monitored with the SEMATECH Berkeley micro-exposure tool (MET). Each process measurement of the cleaned mask was compared to a reference mask with the same mask architecture. Both masks were imaged on the same day in order to eliminate any process-related measurement uncertainties. The cleaned mask was periodically monitored with atomic force microscopy (AFM) measurements and pattern widths were monitored using scanning electron microscopy (SEM). In addition, reflectivity changes were also tracked with the aid of witness plate measurements. At the conclusion of this study, the mask under evaluation was cleaned 22 times; with none of the evaluation techniques showing any significant degradation in performance.
Date:
March 11, 2011
Creator:
George, Simi A.; Chen, Robert J.; Baclea-an, Lorie Mae & Naulleau, Patrick P.
Object Type:
Article
System:
The UNT Digital Library
3d segmentation of rodent brain structures using active volume model with shape priors; conference paper
N/A
Date:
March 20, 2011
Creator:
Zhang, Shaoting; Huang, J.; Uzunbas, M.; Shen, T.; Delis, F.; Volkow, N. D. et al.
Object Type:
Article
System:
The UNT Digital Library
["7th Annual Weekend Festival of Black Dance" tape 1 of 3]
Video footage from The Black Academy of Arts and Letters recorded during the 7th annual weekend festival of black dance held on March 4th, 2011. The footage shows young people in various groups and solo performances of contemporary style dance.
Date:
March 4, 2011
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
["7th Annual Weekend Festival of Black Dance" tape 2 of 3]
Video footage from The Black Academy of Arts and Letters recorded during the 7th annual weekend festival of black dance held on March 4th, 2011. The footage shows young people in various groups and solo performances of contemporary style dance.
Date:
March 4, 2011
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
["7th Annual Weekend Festival of Black Dance" tape 3 of 3]
Video footage from The Black Academy of Arts and Letters recorded during the 7th annual weekend festival of black dance held on March 4th, 2011. The footage shows young people in various groups and solo performances of contemporary style dance.
Date:
March 4, 2011
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
82nd Texas Legislature, Regular Session, House Concurrent Resolution 10
Concurrent resolution introduced by the Texas House of Representatives and Senate honoring Southern Methodist University on the 100th anniversary of its founding and 10 decades of educational excellence.
Date:
March 24, 2011
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
82nd Texas Legislature, Regular Session, House Concurrent Resolution 28
Concurrent resolution introduced by the Texas House of Representatives and Senate in memory of Don Meredith, former SMU and Dallas Cowboys quarterback and longtime sportscaster.
Date:
March 24, 2011
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
82nd Texas Legislature, Regular Session, House Concurrent Resolution 40
Concurrent resolution introduced by the Texas House of Representatives and Senate designating the Sunday through Saturday surrounding World Suicide Prevention Day, September 10, each year as Texas Suicide Prevention Week.
Date:
March 24, 2011
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History