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AGS model in Zgoubi RHIC run 13 polarization modeling status
N/A
Date:
May 12, 2013
Creator:
F., Meot; Ahrens, L.; Brown, K.; Dutheil, Y.; Glenn, J.; Harper, C. et al.
Object Type:
Article
System:
The UNT Digital Library
AGS UPGRADE TO 1-MW WITH A SUPER CONDUCTING LINAC INJECTOR.
It has been proposed to upgrade the Alternating Gradient Synchrotron (AGS) accelerator complex at the Brookhaven National Laboratory (BNL) to provide an average proton beam power of 1 MW at the energy of 28 GeV. The facility is to be primarily used as a proton driver for the production of intense neutrino beams [l]. This paper reports on the feasibility study of a proton Super-Conducting Linac (SCL) as a new injector to the AGS. The Linac beam energy is 1.3 GeV. The beam intensity is adjusted to provide the required average beam power of 1 MW at 28 GeV. The repetition rate of the SCL-AGS facility is 2.5 beam pulses per second.
Date:
May 12, 2003
Creator:
RUGGIERO,A. GALESSI,J. RAPARIA,D. ROSER,T. WENG,W.
Object Type:
Article
System:
The UNT Digital Library
AIDS in Africa
Sub-Saharan Africa has been far more severely affected by AIDS than any other part of the world. The United Nations reports that 24.5 million adults and children are infected with the HIV virus in the region, which has about 10% of the world's population but more than 64% of the worldwide total of infected people. This report discusses this issue in detail, including the cause of the African AIDS epidemic, the social and economic consequences, response and treatment, and U.S. policy.
Date:
May 12, 2005
Creator:
Copson, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipline Leak Detection Semi-Annual Report: October 2003 - April 2004
Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The third six-month technical report contains a summary of the progress made towards finalizing the design and assembling the airborne, remote methane and ethane sensor. The vendor has been chosen and is on contract to develop the light source with the appropriate linewidth and spectral shape to best utilize the Ophir gas correlation software. Ophir has expanded upon the target reflectance testing begun in the previous performance period by replacing the experimental receiving optics with the proposed airborne large aperture telescope, which is theoretically capable of capturing many times more signal return. The data gathered from these tests has shown the importance of optimizing the fiber optic receiving fiber to the receiving optic and has helped Ophir to optimize the design of the gas cells and narrowband optical filters. Finally, Ophir will discuss remaining project issues that may impact the success of the project.
Date:
May 12, 2004
Creator:
Myers, Jerry
Object Type:
Report
System:
The UNT Digital Library
Airport Privatization: Issues and Options for Congress
This report discusses airport privatization, particularly the low participation in the Airport Privatization Pilot Program (APPP) and the policy changes that would be required to encourage more airports to privatize. It provides background on privatization in general, the APPP and reasons why it has not stimulated privatization, privatization in Europe and Canada, and related issues and options.
Date:
May 12, 2014
Creator:
Tang, Rachel Y.
Object Type:
Report
System:
The UNT Digital Library
Alignment of the High Beta Magnets in the RHIC Interaction Regions
This report talks about the Alignment of the High Beta Magnets in the RHIC Interaction Regions
Date:
May 12, 1997
Creator:
Trbojevic, D.; Jain, A.; Tepikian, S.; Grandetti, R.; Ganetis, G.; Wei, J. et al.
Object Type:
Report
System:
The UNT Digital Library
All-optical beamlet train generation
One of the critical issues for the development of Laser Wake Field Acceleration (LWFA), which has the promise of creating table-top, GeV accelerators, is the loading of beamlets into the accelerating buckets. All optical injection schemes, which include LILAC, beat-wave colliding pulse injection, wave breaking injection, and phase-kick injection, provide a technique for doing so. Although a single bunch can have desirable properties such as energy spread of the order of a few percent, femtosecond duration k and low emittance (<1 mm-mrad), recent simulations show that such methods lead to efficiencies of transfer of plasma wave energy to beam energy that are low compared with conventional RF accelerators when only a single pulse is generated. Our latest simulations show that one can improve on this situation through the generation of a beamlet train. This can occur naturally through phase-kick injection at the front of the train and transverse wave breaking for the trailing pulses. The result is an efficiency improvement of the order of the number of beamlets in the train.
Date:
May 12, 2003
Creator:
Cary, John; Giacone, Rodolfo; Nieter, Chet; Bruhwiler, David; Esarey, Eric; Fubiani, Gwenael et al.
Object Type:
Article
System:
The UNT Digital Library
The America COMPETES Acts: An Overview
This report discusses the COMPETES acts, policy debate and implementation status, enactment and re authorization and concluding observation.
Date:
May 12, 2015
Creator:
Gonzalez, Heather B.
Object Type:
Report
System:
The UNT Digital Library
Analysis for Oxide in Thorium Metal
Abstract. to estimate the oxygen picked up by thorium in casting a rapid method of running the acid insoluble content was developed. the quickest procedure consists of reacting with mixed acids, fuming with perchloric and filtration to separate the "free" thorium from the "combined". The precipitate is ignited and weighed as thorium dioxide.
Date:
May 12, 1945
Creator:
Ayers, A. S.
Object Type:
Report
System:
The UNT Digital Library
THE ANALYSIS OF THE CROSS TALK IN A RF GUN SUPERCONDUCTING CAVITY.
A project to develop an all Niobium Superconducting RF Gun is underway at Brookhaven National Laboratory in collaboration with Advanced Energy Systems. The geometry of the gun requires that the power input and the pickup probes are on the same side of the cavity, which causes direct coupling between them, or crosstalk. At room temperature, the crosstalk causes serious distortion of the RF response. This paper addresses the phenomenon, the analysis and the simulation results as well as the measurements. A method is provided on how to extract the desired information from the confusing signal and allow accurate measurements of the coupling between the probes and the cavity.
Date:
May 12, 2003
Creator:
ZHAO,Y. COLE,M. D.
Object Type:
Article
System:
The UNT Digital Library
Analytical Solutions for Testing Ray-Effect Errors in Numerical Solutions of the Transport Equation
This paper contains three analytical solutions of transport problems which can be used to test ray-effect errors in the numerical solutions of the Boltzmann Transport Equation (BTE). We derived the first two solutions and the third was shown to us by M. Prasad [2]. Since this paper is intended to be an internal LLNL report, no attempt was made to find the original derivations of the solutions in the literature in order to cite the authors for their work. Before we embarked on this project, the only analytical solution known to us which could serve as a diagnostic test for ray-effects is the solution of an isotropic point source in a homogeneous non-scattering medium. However this solution is not an accurate test, because a point source is difficult to represent numerically. Thus it is useful for testing purposes to have an analytical solution of a localized volume source. The sources in the three problems below are isotropic spheres centered at the origin. Since ray-effect oscillations are the most pronounced for the transport in a vacuum (because the oscillations are not damped out by absorption), the absorption is set to zero in the regions exterior of the sources in the three …
Date:
May 12, 2003
Creator:
Chang, B.
Object Type:
Report
System:
The UNT Digital Library
Animal-Yoke
Patent for an animal-yoke.
Date:
May 12, 1903
Creator:
Landers, Willis M.
Object Type:
Patent
System:
The Portal to Texas History
Annealing of Irradiated Boron Containing Alloys and Dispersions
The interpretation of the dimensional instability of U- Zr alloy containing small amounts of boron has raised the question of whether the observed low-temperature swelling can be related to the temperatureswelling characteristics of either the U-Zr alloy or Zr- B alloys by themselves. To obtain such information on the Zr--B system to compare with the more detailed study of thc alloy early results of which were reported in KAPL-1562, pieces of previously irradiated Zr- B alloys and dispersions were annealed in vacuum at temperatures between 350 and 750 C. (auth)
Date:
May 12, 1958
Creator:
Johnston, W. V. & Noonan, J. E.
Object Type:
Report
System:
The UNT Digital Library
Apparatus for Hoisting Bales on Wagons.
Patent for a new and improved bale hoister. This design "relates to apparatus for loading and unloading wagons, and it has for its object to provide an apparatus of this character which shall be cheap and simple in its construction, effective in its operation, strong and durable, an apparatus by the use of which a wagon may be quickly loaded and unloaded" (lines 9-15).
Date:
May 12, 1885
Creator:
Lamb, George Washington
Object Type:
Patent
System:
The Portal to Texas History
Application of automatic differentiation in TOUGH2
Automatic differentiation (AD) is a way to accurately and efficiently compute derivatives of a function written in computer codes. We describe the procedures necessary to apply the AD method to the multiphase, multicomponent, nonisothermal flow simulator TOUGH2. In particular, we apply the AD method to the ECO2 module of the TOUGH2 code to explore a scheme for efficiently calculating the Jacobian matrix, which is required by the Newton-Raphson method for handling the nonlinearities arising at each iteration. The ECO2 module allows TOUGH2 to accurately simulate CO2 sequestration in aquifers. The robustness and efficiency of the AD-generated derivative codes are compared to the conventional derivative computation approach based on first-order finite differences (FD). Our result with the test problem set indicates that the AD-generated derivative code could improve the convergence behavior in the linear solution step, taking less computational time to compute one linear matrix system.
Date:
May 12, 2003
Creator:
Kim, Jong G. & Finsterle, Stefan
Object Type:
Article
System:
The UNT Digital Library
Application of the office of civilian radioactive waste management QA requirements to the hanford spent nuclear fuel project
This document identifies, at a high-level, the Hanford SNF Project systems, structures, and components and activities that must implement to some degree the OCRWM QARD requirements to ensure compliance with RL direction. This document will also be used to support development of a QARD requirements matrix for the implementation of QARD requirements.
Date:
May 12, 1999
Creator:
MCCORMACK, R.L.
Object Type:
Report
System:
The UNT Digital Library
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests
The United States recognized the independence of all the former Soviet republics by the end of 1991, including the South Caucasus states of Armenia, Azerbaijan, and Georgia. The United States has fostered these states' ties with the West in part to end the dependence of these states on Russia for trade, security, and other relations. The FREEDOM Support Act of 1992 provides authorization for assistance to the Eurasian states for humanitarian needs, democratization, and other purposes. In the aftermath of the September 11, 2001, terrorist attacks on the United States, the Administration appealed for a national security waiver of the prohibition on aid to Azerbaijan, in consideration of Azerbaijan's assistance to the international coalition to combat terrorism. Azerbaijani and Georgian troops participate in stabilization efforts in Afghanistan and Iraq, and Armenian personnel serve in Iraq.
Date:
May 12, 2005
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
Army Corps Civil Works Funding: A Primer
This report describes funding for the U.S. Army Corps of Engineers (Corps), including budget accounts and annual appropriations.
Date:
May 12, 2014
Creator:
Stern, Charles V. & Carter, Nicole T.
Object Type:
Report
System:
The UNT Digital Library
The Army's Future Combat System (FCS): Background and Issues for Congress
This report describes the Future Combat System (FCS) program, which was to be the Army's major research, development, and acquisition program consisting of 14 manned and unmanned systems linked by an extensive communications and information network.
Date:
May 12, 2008
Creator:
Feickert, Andrew
Object Type:
Report
System:
The UNT Digital Library
Artificial Fuel
Patent for artificial fuel.
Date:
May 12, 1903
Creator:
Russi, Charles & Cadena, Celedonio
Object Type:
Patent
System:
The Portal to Texas History
Atmospheric Effects on the Performance of Cdznte Single Crystal Detectors
The production of high-quality ternary single-crystal materials for radiation detectors has progressed over the past 15 years. One of the more common materials being studied is CdZnTe (CZT), which can be grown using several methods to produce detector-grade materials. The work presented herein examines the effects of environmental conditions including temperature and humidity on detector performance [full-width at half-maximum (FWHM)] using the single pixel with guard detector configuration. The effects of electrical probe placement, reproducibility, and aging are also presented.
Date:
May 12, 2010
Creator:
Washington, A.; Duff, M. & Teague, L.
Object Type:
Article
System:
The UNT Digital Library
Australia
This report discusses Australia's strategic alliance with the United States and their economic ties with China and ways these two interests may conflict. Relations between the U.S. and Australia and recent tensions between U.S. President Trump and Australian President Turnbull are also discussed.
Date:
May 12, 2017
Creator:
Vaughn, Bruce
Object Type:
Report
System:
The UNT Digital Library
Automatic Track Sweeping and Oiling Attachment for Street-Cars.
Patent for improvements in automatic track sweeping and oiling attachments to street cars by having a transverse shaft carries a hub which has a series of brushes. When “the street car moves forward, the brushes on the transverse shaft are revolved, which sweep the rails and keep them clean.” (Lines 90-93) Illustration is included.
Date:
May 12, 1891
Creator:
Nesmith, Robert Henry
Object Type:
Patent
System:
The Portal to Texas History
Automatic Visualization of Software Requirements: Reactive Systems
In this paper we present an approach that facilitates the validation of high consequence system requirements. This approach consists of automatically generating a graphical representation from an informal document. Our choice of a graphical notation is statecharts. We proceed in two steps: we first extract a hierarchical decomposition tree from a textual description, then we draw a graph that models the statechart in a hierarchical fashion. The resulting drawing is an effective requirements assessment tool that allows the end user to easily pinpoint inconsistencies and incompleteness.
Date:
May 12, 1999
Creator:
Castello, R.; Mili, R.; Tollis, I.G. & Winter, V.
Object Type:
Article
System:
The UNT Digital Library