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Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron

Description: We study the underlying event in proton-antiproton collisions by examining the behavior of charged particles (transverse momentum p{sub T} > 0.5 GeV/c, pseudorapidity |{eta}| < 1) produced in association with large transverse momentum jets ({approx}2.2 fb{sup -1}) or with Drell-Yan lepton-pairs ({approx}2.7 fb{sup -1}) in the Z-boson mass region (70 < M(pair) < 110 GeV/c{sup 2}) as measured by CDF at 1.96 TeV center-of-mass energy. We use the direction of the lepton-pair (in Drell-Y… more
Date: March 1, 2010
Creator: Aaltonen, T.; Adelman, J.; Gonzalez, B.Alvarez; Amerio, S.; Amidei, D.; Anastassov, A. et al.
Item Type: Refine your search to only Article
open access

Measurement of $d\sigma/dy$ of Drell-Yan $e^+e^-$ pairs in the $Z$ Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV

Description: We report on a CDF measurement of the total cross section and rapidity distribution, d{sigma}/dy, for q{bar q} {yields} {gamma}{sup *}/Z {yields} e{sup +} e {sup -} events in the Z boson mass region (66 < M {sub ee} < 116 GeV/c {sub 2}) produced in p{bar p} collisions at {radical}s = 1.96 TeV with 2.1 fb{sup -1} of integrated luminosity. The measured cross section of 257 {+-} 16pb and d{sigma}/dy distribution are compared with Next-to-Leading-Order (NLO) and Next-to-Next-to-Leading-Order … more
Date: March 1, 2010
Creator: Aaltonen, Timo Antero; Phys., /Helsinki Inst. of; Adelman, Jahred A.; /Chicago U., EFI; Gonzalez, Barbara Alvarez; Phys., /Cantabria Inst. of et al.
Item Type: Refine your search to only Article
open access

AGR-1 Data Qualification Report

Description: ABSTRACT Projects for the very high temperature reactor (VHTR) Technology Development Office (TDO) program provide data in support of Nuclear Regulatory Commission licensing of the VHTR. Fuel and materials to be used in the reactor are tested and characterized to quantify performance in high temperature and high fluence environments. The VHTR program has established the NGNP Data Management and Analysis System (NDMAS) to ensure that VHTR data are (1) qualified for use, (2) stored in a readily a… more
Date: March 1, 2010
Creator: Abbott, Michael
Item Type: Refine your search to only Report
open access

Pressure-induced isostructural transition in PdN2

Description: We show that a synthesized Pd-N compound crystallize into the pyrite structure by comparison of experimental and calculated Raman intensities. The decreasing Raman intensities with decreasing pressure is explained by a closing of the fundamental band gap. We further discuss the experimental decomposition of this compound at 11 GPa in terms of an isostructural transition within the pyrite structure.
Date: March 5, 2010
Creator: Aberg, D; Erhart, P; Crowhurst, J; Zaug, J M; Goncharov, A F & Sadigh, B
Item Type: Refine your search to only Article
open access

Europe's Preferential Trade Agreements: Status, Content, and Implications

Description: The first section of this report describes the status and primary motivations of the EU's preferential trade agreements (PTAs) currently in place or under negotiation. The second compares the content and trade coverage of Europe's PTAs to U.S. PTAs. A third section assesses the implications of the EU's PTA program for the multilateral trading system and U.S. trade policy. A concluding section evaluates future directions for Europe's PTA policy.
Date: March 22, 2010
Creator: Ahearn, Raymond J.
Item Type: Refine your search to only Report
open access

Research Reactor Preparations for the Air Shipment of Highly Enriched Uranium from Romania

Description: In June 2009 two air shipments transported both unirradiated (fresh) and irradiated (spent) Russian-origin highly enriched uranium (HEU) nuclear fuel from two research reactors in Romania to the Russian Federation for conversion to low enriched uranium. The Institute for Nuclear Research at Pitesti (SCN Pitesti) shipped 30.1 kg of HEU fresh fuel pellets to Dimitrovgrad, Russia and the Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH) shipped 23.7 kilograms of HEU spe… more
Date: March 1, 2010
Creator: Allen, K. J.; Bolshinsky, I.; Biro, L. L.; Budu, M. E.; Zamfir, N. V.; Dragusin, M. et al.
Item Type: Refine your search to only Article
open access

Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY2009

Description: This report documents the progress made through FY 2009 on a project initiated in FY 2006 to help address uncertainties related to the rates of hydrolysis in groundwater for carbon tetrachloride (CT) and chloroform (CF). The study seeks also to explore the possible effects of contact with minerals and sediment (i.e., heterogeneous hydrolysis) on these rates. In previous years the work was funded as two separate projects by various sponsors, all of whom received their funding from the U.S. Depar… more
Date: March 2010
Creator: Amonette, James E.; Jeffers, Peter M.; Qafoku, Odeta; Russell, Colleen K.; Wietsma, Thomas W. & Truex, Michael J.
Item Type: Refine your search to only Report
open access

Thermoluminescent Dosimeter Use for Environmental Surveillance at the Hanford Site, 1971–2005

Description: This report describes the use of thermo luminescent dosimeters for environmental surveillance of external radiation on and around the Hanford Site for the period of 1970 to 2005. It addresses changes in the technology and associated quality control and assurance used in this work and summarizes the results of the 35 year period of external radiation surveillance. The appendices to this report provide trend plots for each location that comprised the shoreline, onsite, perimeter, and offsite samp… more
Date: March 1, 2010
Creator: Antonio, Ernest J.; Poston, Ted M. & Rathbone, Bruce A.
Item Type: Refine your search to only Report
open access

American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 - Control Tower and Support Building, Las Vegas, NV

Description: This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be built in Las Vegas, Nevada by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.
Date: March 31, 2010
Creator: Arends, J. & Sandusky, William F.
Item Type: Refine your search to only Report
open access

American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration – Project 209 Control Tower and Support Building Oakland, CA

Description: This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be build at Oakland, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.
Date: March 1, 2010
Creator: Arends, J. & Sandusky, William F.
Item Type: Refine your search to only Report
open access

ARRA FEMP Technical Assistance -- Federal Aviation Administration Project 209 -- Control Tower and Support Building, Palm Springs, CA

Description: This report represents findings of a design review team that evaluated construction documents (at the 100% level) and operating specifications for a new control tower and support building that will be built in Palm Springs, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise oc… more
Date: March 31, 2010
Creator: Arends, J. & Sandusky, William F.
Item Type: Refine your search to only Report
open access

Guinea: Background and Relations with the United States

Description: This report discusses the current political conditions in Guinea, as well as the considerable changes to Guinea's political landscape that have taken place over the past two years. The report also discusses U.S. interests and associated policy challenges in Guinea, centering around democratization, counternarcotics issues, regional stability, and socioeconomic development, among other issues.
Date: March 22, 2010
Creator: Arieff, Alexis & Cook, Nicolas
Item Type: Refine your search to only Report
open access

Water adsorption, solvation and deliquescence of alkali halide thin films on SiO2 studied by ambient pressure X-ray photoelectron spectroscopy

Description: The adsorption of water on KBr thin films evaporated onto SiO2 was investigated as a function of relative humidity (RH) by ambient pressure X-ray photoelectron spectroscopy. At 30percent RH adsorbed water reaches a coverage of approximately one monolayer. As the humidity continues to increase, the coverage of water remains constant or increases very slowly until 60percent RH, followed by a rapid increase up to 100percent RH. At low RH a significant number of the Br atoms are lost due to irradia… more
Date: March 31, 2010
Creator: Arima, Kenta; Jiang, Peng; Deng, Xingyi; Bluhm, Henrik & Salmeron, Miquel
Item Type: Refine your search to only Article
open access

FY2011 Budget Proposals and Projections

Description: This report provides an overview of major budget estimates and projections for the FY2011 federal budget cycle. The report presents and compares budget projections calculated by the Obama Administration's Office of Management and Budget (OMB) and the Congressional Budget Office (CBO).
Date: March 29, 2010
Creator: Austin, D. A.
Item Type: Refine your search to only Report
open access

Testing CPT conservation using the NuMI neutrino beam with the MINOS experiment

Description: The MINOS experiment was designed to measure neutrino oscillation parameters with muon neutrinos. It achieves this by measuring the neutrino energy spectrum and flavor composition of the man-made NuMI neutrino beam 1km after the beam is formed and again after 735 km. By comparing the two spectra it is possible to measure the oscillation parameters. The NuMI beam is made up of 7.0%$\bar{v}$<sub>μ</sub>, which can be separated from the v<sub>μ</sub> because the MINOS detectors are magnetized. Thi… more
Date: March 1, 2010
Creator: Auty, David John
Item Type: Refine your search to only Thesis or Dissertation
open access

Measurement/Evaluation Techniques and Nuclear Data Associated with Fission of 239Pu by Fission Spectrum Neutrons

Description: This Panel was chartered to review and assess new evaluations of work on fission product data, as well as the evaluation process used by the two U.S. nuclear weapons physics laboratories. The work focuses on fission product yields resulting from fission spectrum neutrons incident on plutonium, and includes data from measurements that had not been previously published as well as new or revised fission product cumulative yield data, and related quantities such as Q values and R values. This repor… more
Date: March 16, 2010
Creator: Baisden, Patricia; Bauge, Eric; Ferguson, James; Gilliam, David; Granier, Thierry; Jeanloz, Raymond et al.
Item Type: Refine your search to only Report
open access

A deeper look at climate change and national security.

Description: Climate change is a long-term process that will trigger a range of multi-dimensional demographic, economic, geopolitical, and national security issues with many unknowns and significant uncertainties. At first glance, climate-change-related national security dimensions seem far removed from today's major national security threats. Yet climate change has already set in motion forces that will require U.S. attention and preparedness. The extent and uncertainty associated with these situations nec… more
Date: March 1, 2010
Creator: Baker, Arnold Barry; Backus, George A. & Romig, Alton Dale, Jr.
Item Type: Refine your search to only Report
open access

Some Considerations Regarding Pulsed Correction of Chromatic Aberrations in Final Focusing Systems

Description: Nearly all designs of accelerators for heavy ion fusion rely on a velocity (energy) ramp to compress the beam longitudinally from its length in the accelerator to the length required at the target. The size of the velocity ramp is constrained by the longitudinal emittance of the beam. For example, if the longitudinal emittance is 0.05 eV {center_dot} s and we wish to produce a pulse having a width of {+-}2.5 ns at the target, we must supply an energy tilt such that the energy spread at the targ… more
Date: March 31, 2010
Creator: Bangerter, Roger
Item Type: Refine your search to only Report
open access

Stability of modulation transfer function calibration of surface profilometers using binary pseudo-random gratings and arrays with nonideal groove shapes

Description: The major problem of measurement of a power spectral density (PSD) distribution of surface heights with surface profilometers arises due to the unknown Modulation Transfer Function (MTF) of the instruments, which tends to distort the PSD at higher spatial frequencies. The special mathematical properties of binary pseudo-random patterns make them an ideal basis for developing MTF calibration test surfaces. Two-dimensional binary pseudo-random arrays (BPRAs) have been fabricated and used for the … more
Date: March 31, 2010
Creator: Barber, Samuel K.; Anderson, Erik H.; Cambie, Rossana; Marchesini, Stefano; McKinney, Wayne R.; Takacs, Peter Z. et al.
Item Type: Refine your search to only Article
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