UNT Libraries Government Documents Department - 435 Matching Results

Search Results

Results: 1 - 24 next
open access

1.5-GEV FFAG ACCELERATOR AS INJECTOR TO THE BNL-AGS.

Description: A 1.5-GeV Fixed-Field Alternating-Gradient (FFAG) proton Accelerator is being studied as a new injector to the Alternating-Gradient Synchrotron (AGS) of Brookhaven National Laboratory (BNL). The major benefit is that it would considerably shorten the overall AGS acceleration cycle, and, consequently, may yield to an improvement of beam stability, intensity and size. The AGS-FFAG will also facilitate the proposed upgrade of the AGS facility toward a 1-MW average proton beam power at the top ener… more
Date: July 5, 2004
Creator: Ruggiero, A. G.; Blaskiewicz, M.; Trbojevic, D.; Tsoupas, N. & Zhang, W.
Item Type: Refine your search to only Article
open access

A 30 ps Timing Resolution for Single Photons with Multi-pixel Burle MCP-PMT

Description: We have achieved {approx}30 psec single-photoelectron and {approx}12ps for multi-photoelectron timing resolution with a new 64 pixel Burle MCP-PMT with 10 micron microchannel holes. We have also demonstrated that this detector works in a magnetic field of 15kG, and achieved a single-photoelectron timing resolution of better than 60 psec. The study is relevant for a new focusing DIRC RICH detector for particle identification at future Colliders such as the super B-factory or ILC, and for future … more
Date: July 5, 2006
Creator: Va'vra, J.; Benitez, J.; Coleman, J.; Leith, D. W. G. S.; Mazaheri, G.; Ratcliff, B. et al.
Item Type: Refine your search to only Article
open access

A 568 page petition signed by approximately 10,458 American Citizens that live in the Great State of Ohio

Description: A 568 page petition signed by approximately 10,458 American Citizens that live in the Great State of Ohio consisting of their printed name, county of residence, and their signature. The petition states they are opposed to the B.R.A.C (Base Realignment and Closure) Act that proposes to close the 179AW Mansfield, Ohio.
Date: July 5, 2005
Item Type: Refine your search to only Legal Document
open access

Abortion and Family Planning-Related Provisions in U.S. Foreign Assistance Law and Policy

Description: This report details legislation and policies that restrict or place requirements on U.S. funding of abortion or family planning activities abroad. The level and extent of federal funding for these activities is an ongoing and controversial issue in U.S. foreign assistance and will likely continue to be a point of contention during the second session of the 114th Congress.
Date: July 5, 2015
Creator: Blanchfield, Luisa
Item Type: Refine your search to only Report
open access

ACCELERATION OF POLARIZED BEAMS USING MULTIPLE STRONG PARTIAL SIBERIAN SNAKES.

Description: Acceleration of polarized protons in the energy range of 5 to 25 GeV is particularly difficult since depolarizing spin resonances are strong enough to cause significant depolarization but full Siberian snakes cause intolerably large orbit excursions. Using a 20-30% partial Siberian snake both imperfection and intrinsic resonances can be overcome. Such a strong partial Siberian snake was designed for the Brookhaven AGS using a dual pitch helical superconducting dipole. Multiple strong partial sn… more
Date: July 5, 2004
Creator: ROSER,T. AHRENS,L. BAI,M. ET AL.
Item Type: Refine your search to only Article
open access

Advances in X-Band TW Accelerator Structures Operating in the 100 MV/M Regime

Description: A CERN-SLAC-KEK collaboration on high gradient X-band accelerator structure development for CLIC has been ongoing for three years. The major outcome has been the demonstration of stable 100 MV/m gradient operation of a number of CLIC prototype structures. These structures were fabricated using the technology developed from 1994 to 2004 for the GLC/NLC linear collider initiative. One of the goals has been to refine the essential parameters and fabrication procedures needed to realize such a high… more
Date: July 5, 2012
Creator: Higo, Toshiyasu; Higashi, Yasuo; Matsumoto, Shuji; Yokoyama, Kazue; Adolphsen, Chris; Dolgashev, Valery et al.
Item Type: Refine your search to only Article
open access

Air quality impacts analysis for area G. Final report

Description: The impact of fugitive radioactive emissions from the disposal site, Area G, was evaluated in support of site characterization for the Performance Assessment and for the Radioactive Air Emissions Management (RAEM) program. Fugitive emissions of tritiated water and contaminated windblown dust were considered. Data from an extensive field measurement program were used to estimate annual emissions of tritiated water. Fugitive dust models were used to calculate estimates of the annual emissions of … more
Date: July 5, 1995
Creator: Kowalewsky, K.; Eklund, B. & Vold, E. L.
Item Type: Refine your search to only Report
open access

All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD

Description: We use on-shell recursion relations to compute analytically the one-loop corrections to maximally-helicity-violating n-gluon amplitudes in QCD. The cut-containing parts have been computed previously; our work supplies the remaining rational parts for these amplitudes, which contain two gluons of negative helicity and the rest positive, in an arbitrary color ordering. We also present formulae specific to the six-gluon cases, with helicities (-+-+++) and (-++-++), as well as numerical results for… more
Date: July 5, 2006
Creator: Berger, Carola F.; Bern, Zvi; Dixon, Lance J.; Forde, Darren & Kosower, David A.
Item Type: Refine your search to only Report
open access

Analysis of Electron Cloud at Rhic.

Description: Pressure rises with high intense beams are among the main luminosity limitations at RHIC. Observations during the latest runs show beam induced electron multipacting as one of the causes for these pressure rises. Experimental studies are carried out at RHIC using devoted instrumentation to understand the mechanism leading to electron clouds. In the following, we report the experimental electron cloud data and the analyzed results using computer simulation codes.
Date: July 5, 2004
Creator: Iriso, U.; Blaskiewicz, M.; Cameron, P.; Drees, A.; Fischer, W. & Al., Et
Item Type: Refine your search to only Article
open access

Analysis on linac quadrupole misalignment in FACET commissioning 2012

Description: In this note, the analysis on linac quadrupole misalignment is presented for the FACET linac section LI05-09 plus LI11-19. The effectiveness of the beam-based alignment technique is preliminarily confirmed by the measurement. Beam-based alignment technique was adopted at SLAC linac since SLC time. Here the beam-based alignment algorithms are further developed and applied in the FACET commissioning during 2012 run.
Date: July 5, 2012
Creator: Sun, Yipeng
Item Type: Refine your search to only Report
open access

Analytical Chemistry Division Semiannual Progress Report for Period Ending April 20, 1954

Description: Progress report of the Oak Ridge National Laboratory Analytical Chemistry Division providing updates on various projects, experiments, and other work in ionic analyses, analytical instrumentation, radiochemical analyses, activation analyses, spectrochemical analyses, inorganic preparations, optical and electron microscopy.
Date: July 5, 1956
Creator: Kelley, M. T.; Susano, C. D. & Raaen, H. P.
Item Type: Refine your search to only Report
open access

Apparatus and techniques for the study of precipitation of solids and silica from hypersaline geothermal brine

Description: The kinetics of precipitation reactions in geothermal brines can be studied accurately only if the brine samples are collected and examined under anaerobic conditions and with minimum cooling. Apparatus and techniques were developed that achieve this for brine temperatures below 100/sup 0/C. The concentration of suspended solids is measured gravimetrically after filtration, and the concentration of dissolved silica is measured by atomic absorption spectrophotometry. Data from Woolsey No. 1 well… more
Date: July 5, 1979
Creator: Hill, J. H.; Harrar, J. E.; Otto, C. H., Jr.; Deutscher, S. B.; Crampton, H. E.; Grogan, R. G. et al.
Item Type: Refine your search to only Report
open access

Application of a New Method for Analyzing Images: Two-Dimensional Non-Linear Additive Decomposition

Description: This paper documents the application of a new image processing algorithm, two-dimensional non-linear additive decomposition (NLAD), which is used to identify regions in a digital image whose gray-scale (or color) intensity is different than the surrounding background. Standard image segmentation algorithms exist that allow users to segment images based on gray-scale intensity and/or shape. However, these processing techniques do not adequately account for the image noise and lighting variation … more
Date: July 5, 2006
Creator: Zaccaria, M. A.; Drudnoy, D. M. & Stasenko, J. E.
Item Type: Refine your search to only Article
open access

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Description: Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personn… more
Date: July 5, 2001
Creator: Bivins, Steven R & Stoetzel, Gregory A
Item Type: Refine your search to only Report
open access

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Description: Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personn… more
Date: July 5, 2001
Creator: Bivins, Steven R. & Stoetzel, Gregory A.
Item Type: Refine your search to only Report
open access

Army Officer Shortages: Background and Issues for Congress

Description: This report assesses the extent of the Army officer shortfall, examines perceived causes, reviews recent retention initiatives, identifies other possible retention incentives, and concludes with a review of possible options for Congress. This report is focused on the Army’s “line” or basic branch officers.
Date: July 5, 2006
Creator: Henning, Charles A.
Item Type: Refine your search to only Report
open access

ASPEN computer simulations of the mixed waste treatment project baseline flowsheet

Description: The treatment and disposal of mixed waste (i.e., waste containing both hazardous and radioactive components) is a challenging waste- management problem of particular concern to Department of Energy (DOE) sites throughout the United States. Traditional technologies used for destroying hazardous wastes must be re- evaluated for their ability to handle mixed wastes, and, in some cases, new technologies must be developed. The Mixed Waste Treatment Project (MWTP), a collaborative effort between Lawr… more
Date: July 5, 1994
Creator: Dietsche, L. J.; Upadhye, R. S.; Camp, D. W.; Pendergrass, J. A.; Borduin, L. C. & Thompson, T. K.
Item Type: Refine your search to only Report
open access

Atomistic Modeling of Wave Propagation in Nanocrystals

Description: We present non-equilibrium molecular dynamics (MD) simulations of wave propagation in nanocrystals. We find that the width of the traveling wave front increases with grain size, d, as d{sup 1/2}. This width also decreases with the pressure behind the front. We extrapolate our results to micro-crystals and obtain reasonable agreement with experimental data. In addition, our extrapolation agrees with models that only take into account the various velocities of propagation along different crystall… more
Date: July 5, 2005
Creator: Bringa, E; Caro, A; Victoria, M & Park, N
Item Type: Refine your search to only Article
open access

Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation

Description: Parity-odd domains, corresponding to non-trivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three particle azimuthal correlator which is a {Rho} even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au+… more
Date: July 5, 2010
Creator: STAR Collaboration
Item Type: Refine your search to only Article
open access

Beam Conditioning and Harmonic Generation in Free ElectronLasers

Description: The next generation of large-scale free-electron lasers (FELs) such as Euro-XFEL and LCLS are to be devices which produce coherent X-rays using Self-Amplified Spontaneous Emission (SASE). The performance of these devices is limited by the spread in longitudinal velocities of the beam. In the case where this spread arises primarily from large transverse oscillation amplitudes, beam conditioning can significantly enhance FEL performance. Future X-ray sources may also exploit harmonic generation s… more
Date: July 5, 2004
Creator: Charman, A.E.; Penn, G.; Wolski, A. & Wurtele, J.S.
Item Type: Refine your search to only Article
open access

BEAM SCRUBBING FOR RHIC POLARIZED PROTON RUN.

Description: One of the intensity limiting factor of RHIC polarized proton beam is the electron cloud induced pressure rise. A beam scrubbing study shows that with a reasonable period of time of running high intensity 112-bunch proton beam, the pressure rise can be reduced, allowing higher beam intensity.
Date: July 5, 2004
Creator: ZHANG,S. Y. FISCHER,W. HUANG,H. ROSER,T.
Item Type: Refine your search to only Article
open access

Biomolecular Origin of The Rate-Dependent Deformation of Prismatic Enamel

Description: Penetration deformation of columnar prismatic enamel was investigated using instrumented nanoindentation testing, carried out at three constant strain rates (0.05 s{sup -1}, 0.005 s{sup -1}, and 0.0005 s{sup -1}). Enamel demonstrated better resistance to penetration deformation and greater elastic modulus values were measured at higher strain rates. The origin of the rate-dependent deformation was rationalized to be the shear deformation of nanoscale protein matrix surrounding each hydroxyapati… more
Date: July 5, 2006
Creator: Zhou, J & Hsiung, L
Item Type: Refine your search to only Article
open access

Biosafety Protocol for Genetically Modified Organisms: Overview

Description: The Biosafety Protocol to the 1992 Convention on biological Diversity, adopted in early 2000, addresses the safe handling, transfer, and trade of biological organisms. The Protocol sets forth procedures and rules concerning trade in biological products, including genetically modified organisms (GMOs) that have engendered controversy, especially when they are used as agricultural crops. These rules are of key importance to U.S. economic interests in agriculture as well as those dealing in other … more
Date: July 5, 2000
Creator: Segarra, Alejandro E.
Item Type: Refine your search to only Report
Back to Top of Screen