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Deepwater Horizon: Coast Guard and Interior Could Improve Their Offshore Energy Inspection Programs

Description: Testimony issued by the Government Accountability Office with an abstract that begins "The April 2010 explosion of the Deepwater Horizon, a mobile offshore drilling unit (MODU), showed that the consequences of an incident on an offshore energy facility can be significant. A key way to ensure that offshore energy facilities are meeting applicable security, safety, and production standards is through conducting periodic inspections of the facilities. The Coast Guard and the Department of the Inte… more
Date: November 2, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Options for Collecting Revenues on Liquidated Entries of Merchandise Evading Antidumping and Countervailing Duties

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "The United States imposes antidumping and countervailing (AD/CV) duties to remedy unfair foreign trade practices that cause injury to domestic industries. Evasion of AD/CV duties weakens protections for U.S. industry and reduces U.S. revenues. U.S. Customs and Border Protection (CBP) sometimes detects such evasion after the merchandise has been "liquidated," i.e., the goods have entered commerce and the … more
Date: November 2, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Green Building: Federal Initiatives for the Nonfederal Sector Could Benefit from More Interagency Collaboration

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Economic, environmental, and health concerns have spurred interest in "green building"--construction and maintenance practices designed to make efficient use of resources, reduce environmental problems, and provide long-term financial and health benefits. Federal laws and executive orders direct agencies to meet green building standards in federal buildings and to foster green building in the nonfederal… more
Date: November 2, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Office of Science and Technology Policy: Violation of the Antideficiency Act

Description: Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses our October 11 opinion concerning the Office of Science and Technology Policy's (OSTP) use of appropriations for bilateral activities with the government of the People's Republic of China."
Date: November 2, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Parallel Computation of Integrated Electromagnetic, Thermal and Structural Effects for Accelerator Cavities

Description: The successful operation of accelerator cavities has to satisfy both rf and mechanical requirements. It is highly desirable that electromagnetic, thermal and structural effects such as cavity wall heating and Lorentz force detuning in superconducting rf cavities can be addressed in an integrated analysis. Based on the SLAC parallel finite-element code infrastructure for electromagnetic modeling, a novel multi-physics analysis tool has been developed to include additional thermal and mechanical … more
Date: November 2, 2011
Creator: Akcelik, V.; Candel, A. E.; Kabel, A. C.; Ko, K.; Lee, L.; Li, Z. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CLIC RF High Power Production Testing Program

Description: The CLIC Power Extraction and Transfer Structure (PETS) is a passive microwave device in which bunches of the drive beam interact with the impedance of the periodically loaded waveguide and generate RF power for the main linac accelerating structure. The demands on the high power production ({approx} 150 MW) and the needs to transport the 100 A drive beam for about 1 km without losses, makes the PETS design rather unique and the operation very challenging. In the coming year, an intense PETS te… more
Date: November 2, 2011
Creator: Syratchev, I.; Riddone, G. & Tantawi, S. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Last Year of PEP-II B-Factory Operation

Description: The PEP-II B-Factory at SLAC (3.1 GeV e{sup +} x 9.0 GeV e{sup -}) operated from 1999 to 2008, delivering luminosity to the BaBar experiment. The design luminosity was reached after one and a half years of operation. In the end PEP-II surpassed by four times its design luminosity reaching 1.21 x 10{sup 34} cm{sup -2} s{sup -1}. It also set stored beam current records of 2.1 A e{sup -} and 3.2 A e{sup +}. Continuous injection was implemented with BaBar taking data. The total delivered luminosity… more
Date: November 2, 2011
Creator: Seeman, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Customer Satisfaction Survey of Pacific Northwest National Laboratory's Technical Assistance Partners -- FY 2011

Description: The businesses that have utilized PNNL's Technology Assistance Program were sent a survey to solicit feedback about the program and to determine what, if any, outcomes resulted from the assistance provided. As part of its small business outreach, Pacific Northwest National Laboratory (PNNL) offers technology assistance to businesses with fewer than 500 employees throughout the nation and to businesses of any size in the 2 counties that contain the Hanford site. Upon request, up to 40 staff-hour… more
Date: November 2, 2011
Creator: Conger, Robin L. & Spanner, Gary E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bunch Length and Impedance Measurements at SPEAR3

Description: Streak camera measurements were made at SPEAR3 to characterize longitudinal coupling impedance. For the nominal optics, data was taken at three rf voltages and a single-bunch current range of 0-20mA. Both bunchcentroid phase shift and bunch lengthening were recorded to extract values for resistive and reactive impedance. An (R+L) and a Q=1 model were then back-substituted into the Haissinski equation and compared with raw profile data. In the short bunch (low-{alpha}) mode, distribution 'bursti… more
Date: November 2, 2011
Creator: Corbett, W.J.; Cheng, W.X.; Fisher, A.S.; Huang, X. & /SLAC
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ideas for a Future PEP-X Light Source

Description: SLAC is developing a long-range plan to transfer the evolving scientific programs at SSRL from the SPEAR3 light source to a much higher performing synchrotron source -- PEP-X -- a new storage ring that would occupy the existing PEP-II tunnel and support two experimental halls, each containing 16 x-ray beam lines. Operating at 4.5 GeV and 1.5 A with a horizontal emittance of 0.14 nm-rad, reached using 90 m of damping wigglers, PEP-X would have an order of magnitude higher average brightness and … more
Date: November 2, 2011
Creator: Hettel, R.O.; Bane, K.L.F.; Bentson, L.D.; Bertsche, Kirk J.; Brennan, S.M.; Cai, Y. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ARM Climate Research Facility Quarterly Value-Added Product Report Fourth Quarter: July 01–September 30, 2011

Description: The purpose of this report is to provide a concise status update for value-added products (VAP) implemented by the Atmospheric Radiation Measurement Climate Research Facility. The report is divided into the following sections: (1) new VAPs for which development has begun, (2) progress on existing VAPs, (3) future VAPs that have been recently approved, (4) other work that leads to a VAP, and (5) top requested VAPs from the archive. New information is highlighted in blue text. New information abo… more
Date: November 2, 2011
Creator: Sivaraman, C.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Commissioning the 90 Degree Lattice for the PEP II High Energy Ring

Description: In order to benefit from further reduction of the vertical IP beta function of the PEP-II high energy ring (HER) the bunch length should be reduced. This will be achieved by changing the phase advance from 60 degree to 90 degree in the four arcs not adjacent to the IR region, thus reducing momentum compaction by about 30% and reducing bunch length from a present 12 mm down to 8.5 mm at low beam current. In preparation to implement the 90 degree lattice the main HER quadrupole and sextupole stri… more
Date: November 2, 2011
Creator: Wittmer, W.; Cai, Y.; Cheng, W. X.; Colocho, W. S.; Decker, F. J.; Ecklund, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Crabbed Waist Collisions in DAFNE and Super-B Design

Description: The new idea of increasing the luminosity of a collider with crab waist collisions and first experimental results from the DA{Phi}NE {Phi}-Factory at LNF, Frascati, using this concept are presented. Consequences for the design of future factories will be discussed. An outlook to the performance reach with crab waist collisions is given, with emphasis on future B Factories.
Date: November 2, 2011
Creator: Raimondi, P.; Alesini, D.; Biagini, M. E.; Biscari, C.; Boni, R.; Boscolo, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

First Measurements of the Longitudinal Bunch Profile at SLAC Using Coherent Smith-Purcell Radiation at 28GeV

Description: Coherent Smith-Purcell radiation has been demonstrated as a technique for measuring the longitudinal profile of charged particles bunches in the low to intermediate energy range. However, with the advent of the International Linear Collider, the need has arisen for a non-invasive method of measuring the bunch profile at extremely high energies. Smith-Purcell radiation has been used for the first time in the multi-GeV regime to measure the longitudinal profile of the 28GeV SLAC beam. The experim… more
Date: November 2, 2011
Creator: Blackmore, V.; Doucas, G.; Ottewell, B.; Perry, C.; Kimmitt, M.F.; Arnold, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Progress and prospects for an FI relevant point design

Description: The physics issues involved in scaling from sub ignition to high gain fast ignition are discussed. Successful point designs must collimate the electrons and minimize the stand off distance to avoid multi mega-joule ignition energies. Collimating B field configurations are identified and some initial designs are explored.
Date: November 2, 2011
Creator: Key, M.; Amendt, P.; Bellei, C.; Clark, D.; Cohen, B.; Divol, L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

4D Emittance Measurements Using Multiple Wire and Waist Scan Methods in the ATF Extraction Line

Description: Emittance measurements performed in the diagnostic section of the Accelerator Test Facility (ATF) extraction line since 1998 led to vertical emittances three times larger than the expected ones, with a strong dependence on intensity. An experimental program is pursued to investigate potential sources of emittance growth and find possible remedies. This requires efficient and reliable emittance measurement techniques. In the past, several phase-space reconstruction methods developed at SLAC and … more
Date: November 2, 2011
Creator: Rimbault, C.; Bambade, P.; Brossard, J.; Alabau, M.; Kuroda, S.; Scarfe, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Waveguide Structures for RF Undulators with Applications to FELs and Storage Rings

Description: RF undulators, suggested a long time ago, have the advantage of fast dynamic control of polarization, undulator strength and wavelength. However, RF undulators require very strong RF fields in order to produce radiation of the same order as conventional static devices. Very high power RF energy confined inside a waveguide or a cavity can provide the necessary RF fields to undulate the electron beam. However, the wall losses in the waveguide should be low enough to make it practically feasible a… more
Date: November 2, 2011
Creator: Yeddulla, M.; Geng, H. G.; Huang, Z.; Ma, Z. & Tantawi, S. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary Exploratory Study of Different Phase II Collimators

Description: The Large Hadron Collider (LHC) collimation system is installed and commissioned in different phases, following the natural evolution of the LHC performance. To improve cleaning efficiency towards the end of the low beta squeeze at 7TeV, and in stable physics conditions, it is foreseen to complement the 30 highly robust Phase I secondary collimators with low impedance Phase II collimators. At this stage, their design is not yet finalized. Possible options include metallic collimators, graphite … more
Date: November 2, 2011
Creator: Lari, L.; Assmann, R. W.; Bertarelli, A.; Bracco, C.; Brugger, M.; Cerutti, F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Compact QEPAS sensor for trace methane and ammonia detection in impure hydrogen

Description: A compact two-gas sensor based on quartz enhanced photoacoustic spectroscopy (QEPAS) was developed for trace methane and ammonia quantification in impure hydrogen. The sensor is equipped with a micro-resonator to confine the sound wave and enhance QEPAS signal. The normalized noise-equivalent absorption coefficients (1{sigma}) of 2.45 x 10{sup -8} cm{sup -1}W/{radical}Hz and 9.1 x 10{sup -9} cm{sup -1}W/{radical}Hz for CH{sub 4} detection at 200 Torr and NH{sub 3} detection at 50 Torr were demo… more
Date: November 2, 2011
Creator: Wright, J.; Ferguson, B.; Peters, B. & Mcwhorter, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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