UNT Libraries Government Documents Department - 366 Matching Results

Search Results

Results: 1 - 24 next
open access

A 200 MHz 35 MW Multiple Beam Klystron for Accelerator Applications Final Report

Description: Calabazas Creek Research, Inc. (CCR) performed initial development of a compact and reliable 35 MW, multiple beam klystron (MBK) at 200 MHz with a pulse length of 0.125 ms and a 30 Hz repetition rate. The device was targeted for acceleration and ionization cooling of a muon collider, but there are several other potential applications in this frequency range. The klystron uses multiple beams propagating in individual beam tunnels to reduce space charge and allow reduction in the accelerating vol… more
Date: November 28, 2011
Creator: Ives, R. Lawrence; Read, Michael; Ferguson, Patrick & Marsden, David
Item Type: Refine your search to only Report
open access

401(K) Plans: Improved Regulation Could Better Protect Participants from Conflicts of Interest

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Recent volatility in financial markets highlights the need for prudent investment decisions if 401(k) plans are to provide an adequate source of retirement income. While plan sponsors and participants may receive help in assessing their investment choices, concerns have been raised about the impartiality of the advice provided. GAO was asked to describe circumstances where service providers may have con… more
Date: January 28, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
open access

Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival Proportions at John Day Dam, 2009

Description: The overall purpose of the acoustic telemetry study at JDA during 2009 was to determine the best configuration and operation for JDA prior to conducting BiOp performance standard tests. The primary objective was to determine the best operation between 30% and 40% spill treatments. Route-specific and JDA to TDA forebay survival estimates, passage distribution, and timing/behavior metrics were used for comparison of 30% to a 40% spill treatments. A secondary objective was to evaluate the performa… more
Date: September 28, 2011
Creator: Weiland, Mark A.; Ploskey, Gene R.; Hughes, James S.; Deng, Zhiqun; Fu, Tao; Kim, Jin A. et al.
Item Type: Refine your search to only Report
open access

ADDITIONAL QUADRUPOLES AT CENTER OF LONG STRAIGHTS IN THE NSLS-II LATTICE

Description: The NSLS-II storage ring lattice is comprised of 30 DBA cells arranged in 15 superperiods. There are 15 long straight sections (9.3m) for injection, RF and insertion devices and 15 shorter straights (6.6m) for insertion devices. In the baseline lattice, the short straights have small horizontal and vertical beta functions but the long straights have large horizontal beta function optimized for injection. In this paper, we explore the possibility of installing additional quadrupoles at the cente… more
Date: March 28, 2011
Creator: Lin, F.; Bengtsson, J.; Guo, W.; Krinsky, S.; Li, Y. & Yang, L.
Item Type: Refine your search to only Article
open access

Adjoint sensitivity analysis of an ultrawideband antenna

Description: The frequency domain finite element method using H(curl)-conforming finite elements is a robust technique for full-wave analysis of antennas. As computers become more powerful, it is becoming feasible to not only predict antenna performance, but also to compute sensitivity of antenna performance with respect to multiple parameters. This sensitivity information can then be used for optimization of the design or specification of manufacturing tolerances. In this paper we review the Adjoint Method… more
Date: July 28, 2011
Creator: Stephanson, M. B. & White, D. A.
Item Type: Refine your search to only Article
open access

Advances in high-order interaction region nonlinear optics correction at RHIC

Description: A method to indirectly measure and deterministically correct the higher order magnetic errors of the final focusing magnets in the Relativistic Heavy Ion Collider has been in place for several years at BNL. This method yields control over the effects of multi-pole errors through application of closed orbit bumps followed by analysis and correction of the resulting betatron tune shifts using multi-pole correctors. The process has recently been automated in order to provide more efficient and eff… more
Date: March 28, 2011
Creator: Zimmer, C.; Binello, S.; Minty, M. & Pilat, F.
Item Type: Refine your search to only Article
open access

Afghanistan: Politics, Elections, and Government Performance

Description: This report discusses the current political state of Afghanistan, as well as the Afghan government. This report also discusses Afghanistan's relationship with the United States, particularly U.S. efforts to urge President Hamid Karzai, to address corruption within the Afghan government, as well as a discussion of election fraud and corruption in Afghanistan.
Date: March 28, 2011
Creator: Katzman, Kenneth
Item Type: Refine your search to only Report
open access

AGS tune jump power supply design and test

Description: A horizontal tune jump system has been installed to overcome the horizontal intrinsic spin resonances, which requires jumping the horizontal tune 0.04 units 82 times, 41 up and 41 down. Two quadruple magnets have been installed in AGS ring to perform this. The pulsed magnet current ranges from about 140A near injection to about 1400A later. The current pulse rise and fall time are around 100uS and flat tops time is around 4mS. These quadruples have separated supplies. This tune jump pulse power… more
Date: March 28, 2011
Creator: Mi, J.; Glenn, J.W.; Huang, H.; Marneris, I.; Rosas, P.; Sandberg, J. et al.
Item Type: Refine your search to only Article
open access

AGS tune jump system to cross horizontal depolarization resonances overview

Description: Two partial snakes overcome the vertical depolarizing resonances in the AGS. But a new type of depolarizing intrinsic resonance from horizontal motion appeared. We reduce these using horizontal tune jumps timed to these resonances. We gain a factor of six in crossing rate with a tune jump of 0.05 in 100 {micro}s. Two quadrapoles, we described in 2009, pulse 42 times, the current matching beam energy. The power supplies for these quads are described in detail elsewhere in this conference. The co… more
Date: March 28, 2011
Creator: Glenn, J.W.; Ahrens, L.; Fu, W.; Mi, J.L.; Rosas, P.; Schoefer, V. et al.
Item Type: Refine your search to only Article
open access

American Battle Monuments Commission: Improvements Needed in Internal Controls and Accounting Procedures - Fiscal Year 2010

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "On March 1, 2011, we issued our report expressing our opinion on the American Battle Monuments Commission's (the Commission) fiscal years 2010 and 2009 financial statements and our opinion on the Commission's internal control as of September 30, 2010. We also reported on the results of our tests of the Commission's compliance with selected provisions of laws and regulations during fiscal year 2010. Durin… more
Date: July 28, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
open access

Amplification of current density modulation in a FEL with an infinite electron beam

Description: We show that the paraxial field equation for a free electron laser (FEL) in an infinitely wide electron beam with {kappa}-2 energy distribution can be reduced to a fourth ordinary differential equation (ODE). Its solution for arbitrary initial phase space density modulation has been derived in the wave-vector domain. For initial current modulation with Gaussian profile, close form solutions are obtained in space-time domain. In developing an analytical model for a FEL-based coherent electron co… more
Date: March 28, 2011
Creator: Wang, G.; Litvinenko, V. N. & Webb, S. D.
Item Type: Refine your search to only Article
open access

Analyses by the Defense Waste Processing Facility Laboratory of Thorium Glasses from the Sludge Batch 6 Variability Study

Description: The Savannah River Remediation (SRR) Defense Waste Processing Facility (DWPF) is currently processing Sludge Batch 6 (SB6) with Frit 418. At times during the processing of this glass system, thorium is expected to be at concentrations in the final wasteform that make it a reportable element for the first time since startup of radioactive operations at the DWPF. The Savannah River National Laboratory (SRNL) supported the qualification of the processing of this glass system at the DWPF. A recomme… more
Date: February 28, 2011
Creator: Edwards, T.; Click, D. & Feller, M.
Item Type: Refine your search to only Report
open access

ANALYSIS OF HARRELL MONOSODIUM TITANATE LOT #050411

Description: Harrell Industries is under contract with Savannah River Remediation to provide Monosodium titanate (MST) for use in the Actinide Removal Process (ARP). A 500-mL qualification sample for Lot 050411 was sent to the Savannah River National Laboratory (SRNL) to confirm the material meets the requirements specified in the purchase specification. The vendor is also obligated to send verification samples from {approx}10% or more of the pails of MST product for each lot (distributed roughly evenly thr… more
Date: June 28, 2011
Creator: Taylor-Pashow, K.
Item Type: Refine your search to only Report
open access

ANALYSIS OF HARRELL MONOSODIUM TITANATE LOT #081811

Description: Monosodium titanate (MST) for use in the Actinide Removal Process (ARP) must be qualified and verified in advance. A single qualification sample for each batch of material is sent to SRNL for analysis, as well as a statistical sampling of verification samples. The Harrell Industries Lot No.081811 qualification and 12 verification samples met all the requirements in the specification, with the possible exception of the geometric standard deviation for particle size. Two subsamples from the quali… more
Date: October 28, 2011
Creator: Taylor-Pashow, K. & Fink, S.
Item Type: Refine your search to only Report
open access

Analysis of IECC (2003, 2006, 2009) and ASHRAE 90.1-2007 Commercial Energy Code Requirements for Mesa, AZ.

Description: This report summarizes code requirements and energy savings of commercial buildings in Climate Zone 2B built to the 2009 IECC and ASHRAE Standard 90.1-2007 when compared to the 2003 IECC and the 2006 IECC. In general, the 2009 IECC and ASHRAE Standard 90.1-2007 have higher insulation requirements for exterior walls, roof, and windows and have higher efficiency requirements for HVAC equipment. HVAC equipment efficiency requirements are governed by National Appliance Conversion Act of 1987 (NAECA… more
Date: February 28, 2011
Creator: Huang, Yunzhi & Gowri, Krishnan
Item Type: Refine your search to only Report
open access

ANALYSIS OF NSLS-II TOUSCHEK LIFETIME

Description: As scrapers are adopted for the loss control of NSLS-II storage ring, Touschek lifetime estimations for various cases are required to assure the stable operation. However, to estimate the Touschek lifetime, momentum apertures should be measured all along the ring and, if we want to estimate the lifetime in various situations, it can take extremely long time. Thus, rather than simulating for each case, a semi-analytic methods with the interpolations are used for the measurements of the momentum … more
Date: March 28, 2011
Creator: Choi, J. & Kramer, S. L.
Item Type: Refine your search to only Article
open access

Analysis of RHIC beam dump pre-fires

Description: It has been speculated that the beam may cause instability of the RHIC Beam Abort Kickers. In this study, we explore the available data of past beam operations, the device history of key modulator components, and the radiation patterns to examine the correlations. The RHIC beam abort kicker system was designed and built in the 90's. Over last decade, we have made many improvements to bring the RHIC beam abort kicker system to a stable operational state. However, the challenge continues. We pres… more
Date: March 28, 2011
Creator: Zhang, W.; Ahrens, L.; Fischer, W.; Hahn, H.; Mi, J.; Sandberg, J. et al.
Item Type: Refine your search to only Article
open access

Annual Illness and Injury Surveillance Report: Nevada National Security Site, 2010

Description: The U.S. Department of Energy's (DOE) commitment to assuring the health and safety of its workers includes the conduct of illness and injury surveillance activities that provide an early warning system to detect health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence, occupational injuries and illnesses, and disabilities and deaths among current workers.
Date: July 28, 2011
Creator: United States. Department of Energy. Office of Health, Safety, and Security.
Item Type: Refine your search to only Report
open access

Annual Illness and Injury Surveillance Report: Oak Ridge National Laboratory, 2010

Description: The U.S. Department of Energy's (DOE) commitment to assuring the health and safety of its workers includes the conduct of illness and injury surveillance activities that provide an early warning system to detect health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence, occupational injuries and illnesses, and disabilities and deaths among current workers.
Date: July 28, 2011
Creator: United States. Department of Energy. Office of Health, Safety, and Security.
Item Type: Refine your search to only Report
open access

Application of Coherent Tune Shift Measurements to the Characterization of Electron Cloud Growth

Description: Measurements of coherent tune shifts at the Cornell Electron Storage Ring Test Accelerator (CesrTA) have been made for electron and positron beams under a wide variety of beam energies, bunch charge, and bunch train configurations. Comparing the observed tunes with the predictions of several electron cloud simulation programs allows the evaluation of important parameters in these models. These simulations will be used to predict the behavior of the electron cloud in damping rings for future lin… more
Date: March 28, 2011
Creator: Kreinick, D. L.; Crittenden, J. A.; Dugan, G.; Holtzapple, R. L.; Randazzo, M.; Furman, M. A. et al.
Item Type: Refine your search to only Article
open access

APPLYING CASCADED PARAMETER SCAN TO STUDY TOP-OFF SAFETY IN NSLS-II STORAGE RING

Description: In this paper we introduce a new algorithm, the cascaded parameter scan method, to efficiently carry out the scan over magnet parameters in the safety analysis for storage ring top-off injection. In top-off safety analysis, one must track particles populating phase space through a beamline containing magnets and apertures and clearly demonstrate that for all possible magnet settings and errors, all particles are lost on scrapers within the properly shielded region. In the usual approach, the nu… more
Date: March 28, 2011
Creator: Li, Y.
Item Type: Refine your search to only Article
open access

Army and Marine Corps Training: Metrics Needed to Assess Initiatives on Training Management Skills

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Over the past decade, Army and Marine Corps forces have deployed repeatedly with limited time between deployments. At their home stations, combat training centers, and other locations, units have focused their limited training time on training for counterinsurgency operations. Prior to deploying, units also conduct a large-scale exercise referred to as a culminating training event. With the drawdown of … more
Date: July 28, 2011
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
open access

The Arsenal Act: Context and Legislative History

Description: This report describes the roles of the federal manufacturing arsenals during the years surrounding the enactment of the two sections of the Arsenal Act, one as part of the Army Appropriations Act for 1854, and the other within the Defense Act of 1920, also known as the Army Reorganization Act of 1920, and provides historical context. The report also shows the change in language between the sections' original enactment and today, and it provides details on the Army's policy in implementing the m… more
Date: October 28, 2011
Creator: Else, Daniel H.
Item Type: Refine your search to only Report
open access

Automating power supply checkout

Description: Power Supply checkout is a necessary, pre-beam, time-critical function. At odds are the desire to decrease the amount of time to perform the checkout while at the same time maximizing the number and types of checks that can be performed and analyzing the results quickly (in case any problems exist that must be addressed). Controls and Power Supply Group personnel have worked together to develop tools to accomplish these goals. Power Supply checkouts are now accomplished in a time-frame of hours… more
Date: March 28, 2011
Creator: Laster, J.; Bruno, D.; D'Ottavio, T.; Drozd, J.; Marr, G. & Mi, C.
Item Type: Refine your search to only Article
Back to Top of Screen