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A 15-T Pulsed Solenoid for a High-Power Target Experiment
The MERIT experiment, which ran at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. Here, we describe the design and performance of the 15-T, liquid-nitrogen-precooled, copper solenoid magnet.
Date:
June 23, 2008
Creator:
Kirk, H. G.; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Pereira, H.; Titus, P. et al.
Object Type:
Article
System:
The UNT Digital Library
103-06A-DA4-Base Input from BRAC Commission Visit to National Geospatial-Intelligence Agency, MD dtd 26 May 2005
103-06A-DA4-Base Input from BRAC Commission Visit to National Geospatial-Intelligence Agency, MD dtd 26 May 2005. Input includes NGA Presentation for Chairman Principi, NGA Facilities Consolidation Plan and BRAC Impacts, and National Geospatial-Intelligence Agency Activities Deliberative Package.
Date:
June 23, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
201 MHz Cavity R&D for MUCOOL and MICE
We describe the design, fabrication, analysis and preliminary testing of the prototype 201 MHz copper cavity for a muon ionization cooling channel. Cavity applications include the Muon Ionization Cooling Experiment (MICE) as well as cooling channels for a neutrino factory or a muon collider. This cavity was developed by the US muon cooling (MUCOOL) collaboration and is being tested in the MUCOOL Test Area (MTA) at Fermilab. To achieve a high accelerating gradient, the cavity beam irises are terminated by a pair of curved, thin beryllium windows. Several fabrication methods developed for the cavity and windows are novel and offer significant cost savings as compared to conventional construction methods. The cavity's thermal and structural performances are simulated with an FEA model. Preliminary high power RF commissioning results will be presented.
Date:
June 23, 2006
Creator:
Li, Derun; Virostek, Steve; Zisman, Michael; Norem, Jim; Bross,Alan; Moretti, Alfred et al.
Object Type:
Article
System:
The UNT Digital Library
The 2009 Influenza Pandemic: U.S. Responses to Global Human Cases
This report discusses the April 2009 outbreak of the influenza strain known as H1N1, or commonly, swine influenza. This report describes the distribution of the virus and the statistics of affected areas, as well as international and U.S. efforts to treat infected persons, respond to outbreaks in various countries (such as Mexico and other Latin American nations), and prepare for a possible influenza pandemic.
Date:
June 23, 2009
Creator:
Salaam-Blyther, Tiaji
Object Type:
Report
System:
The UNT Digital Library
Accelerators for cancer therapy
The vast majority of radiation treatments for cancerous tumors are given using electron linacs that provide both electrons and photons at several energies. Design and construction of these linacs are based on mature technology that is rapidly becoming more and more standardized and sophisticated. The use of hadrons such as neutrons, protons, alphas, or carbon, oxygen and neon ions is relatively new. Accelerators for hadron therapy are far from standardized, but the use of hadron therapy as an alternative to conventional radiation has led to significant improvements and refinements in conventional treatment techniques. This paper presents the rationale for radiation therapy, describes the accelerators used in conventional and hadron therapy, and outlines the issues that must still be resolved in the emerging field of hadron therapy.
Date:
June 23, 2000
Creator:
Lennox, Arlene J.
Object Type:
Article
System:
The UNT Digital Library
Achieving Stability Requirements for Nanoprobe and Long Beam Lines at NSLS II. A Comprehensive Study
Driven by beam stability requirements at the NSLS II synchrotron, such that the desired small beam sizes and high brightness are both realized and stable, a comprehensive study has been launched seeking to provide assurances that stability at the nanometer level at critical x-ray beam-lines, is achievable, given the natural and cultural vibration environment at the selected site. The study consists of (a) an extensive investigation of the site to evaluate the existing ground vibration, in terms of amplitude, frequency content and coherence, and (b) of a numerical study of wave propagation and interaction with the infrastructure of the sensitive lines. The paper presents results from both aspects of the study.
Date:
June 23, 2008
Creator:
Simos,N.; Fallier, M.; Hill, J.; Berman, L.; Evans-Lutterodt, K. & Broadbent, A.
Object Type:
Article
System:
The UNT Digital Library
Acoustically-driven microfluidic systems
We have demonstrated a non-contact method of concentrating and mixing particles in a plastic microfluidic chamber employing acoustic radiation pressure. A flaw cell package has also been designed that integrates liquid sample interconnects, electrical contacts and a removable sample chamber. Experiments were performed on 1, 3, 6, and 10 {micro}m polystyrene beads. Increased antibody binding to a solid-phase substrate was observed in the presence of acoustic mixing due to improve mass transport.
Date:
June 23, 2000
Creator:
Wang, A W; Benett, W J & Tarte, L R
Object Type:
Article
System:
The UNT Digital Library
Adapting Existing Spatial Data Sets to New Uses: An Example from Energy Modeling
Energy modeling and analysis often relies on data collected for other purposes such as census counts, atmospheric and air quality observations, and economic projections. These data are available at various spatial and temporal scales, which may be different from those needed by the energy modeling community. If the translation from the original format to the format required by the energy researcher is incorrect, then resulting models can produce misleading conclusions. This is of increasing importance, because of the fine resolution data required by models for new alternative energy sources such as wind and distributed generation. This paper addresses the matter by applying spatial statistical techniques which improve the usefulness of spatial data sets (maps) that do not initially meet the spatial and/or temporal requirements of energy models. In particular, we focus on (1) aggregation and disaggregation of spatial data, (2) imputing missing data and (3) merging spatial data sets.
Date:
June 23, 2006
Creator:
Johanesson, G; Stewart, J S; Barr, C; Sabeff, L B; George, R; Heimiller, D et al.
Object Type:
Article
System:
The UNT Digital Library
Advertising by the Federal Government: An Overview
This report discusses government advertising that can be controversial if it conflicts with citizens' views about the proper role of government.
Date:
June 23, 2014
Creator:
Kosar, Kevin R.
Object Type:
Report
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001. OEF actions took place primarily in Afghanistan; however, OEF casualties also includes American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen.
Date:
June 23, 2010
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
Afghanistan: Politics, Elections, and Government Performance
This report discusses the current political state of Afghanistan and the Afghan government. It 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.
Date:
June 23, 2014
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
The Age Discrimination in Employment Act (ADEA): A Legal Overview
This report provides an overview of the Age Discrimination in Employment Act (ADEA) and discusses current legal and legislative developments.
Date:
June 23, 2010
Creator:
Feder, Jody
Object Type:
Report
System:
The UNT Digital Library
AGS polarized proton operation in run 8.
Dual partial snake scheme has been used for the Brookhaven AGS (Alternating Gradient Synchrotron) polarized proton operation for several years. It has provided polarized proton beams with 1.5 x 10{sup 11} intensity and 65% polarization for RHIC spin program. There is still residual polarization loss. Several schemes such as putting horizontal tune into the spin tune gap, and injection-on-the-fly were tested in the AGS to mitigate the loss. This paper presents the experiment results and analysis.
Date:
June 23, 2008
Creator:
Huang, H.; Ahrens, L.; Bai, M.; Brown, K. A.; Gardner, C.; Glenn, J. W. et al.
Object Type:
Article
System:
The UNT Digital Library
Air Force Air Refueling: The KC-X Aircraft Acquisition Program
The report discusses the KC-X program which is expected to acquire 179 new, commercial, off-the-shelf airliners modified to accomplish air refueling.
Date:
June 23, 2008
Creator:
Knight, William; Bolkcom, Christopher & Else, Daniel H.
Object Type:
Report
System:
The UNT Digital Library
Air Traffic Operations: The Federal Aviation Administration Needs to Address Major Air Traffic Operating Cost Control Changes
A letter report issued by the Government Accountability Office with an abstract that begins "Dating back to 1997, numerous reports have highlighted the need for the Federal Aviation Administration (FAA) to better control the growth in its Air Traffic Services operating costs, which account for about $6.5 billion or over 80 percent of FAA's total annual operating costs. In February 2004, FAA established the Air Traffic Organization (ATO) to take over its entire Air Traffic operations and established cost control as a major focus. GAO was asked to determine: (1) What is ATO's financial outlook for its operations? (2) To what extent is ATO taking actions to control its operating costs? (3) What are some options ATO should consider in developing its cost control strategy?"
Date:
June 23, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Alcohol Fuels Tax Incentive
This report discusses federal tax subsidies for alcohol transportation fuels, as well as legislative actions underway to repeal, extend, or reduce them.
Date:
June 23, 1999
Creator:
Lazzari, Salvatore
Object Type:
Report
System:
The UNT Digital Library
American Samoa and Commonwealth of the Northern Mariana Islands: Employment, Earnings, and Status of Key Industries Since Minimum Wage Increases Began
A letter report issued by the Government Accountability Office with an abstract that begins "In 2007, the United States enacted a law incrementally raising the minimum wages in American Samoa and the Commonwealth of the Northern Mariana Islands (CNMI) until they equal the U.S. minimum wage. American Samoa's minimum wage increased by $.50 three times, and the CNMI's four times before legislation delayed the increases, providing for no increase in American Samoa in 2010 or 2011 and none in the CNMI in 2011. As scheduled, American Samoa's minimum wage will equal the current U.S. minimum wage of $7.25 in 2018, and the CNMI's will reach it in 2016. Recent economic declines in both areas reflect the closure of one of two tuna canneries in American Samoa and the departure of the garment industry in the CNMI. GAO is required to report in 2010, 2011, 2013, and biennially thereafter on the impact of the minimum wage increases. This report updates GAO's 2010 report and describes, since the increases began, (1) employment and earnings, and (2) the status of key industries. GAO reviewed federal and local information; collected data from employers through a questionnaire and from employers and workers through discussion groups; …
Date:
June 23, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Analysis of intensity instability threshold at transition in RHIC.
The beam intensity of ion beams in RHIC is limited by a fast transverse instability at transition, driven by the machine impedance and electron clouds. For gold and deuteron beams we analyze the dependence of the instability threshold on beam and machine parameters from recent operational data and dedicated experiments. We fit the machine impedance to the experimental data.
Date:
June 23, 2008
Creator:
Fischer, W.; Blaskiewicz, M.; Cameron, P.; Montag, C. & Ptitsyn, V.
Object Type:
Article
System:
The UNT Digital Library
Animal Trap.
Patent for an improved and simplified trap where "a large number of rats can be caught in succession before the trap has to be emptied, as the trap door arrangement is automatic in regard to resetting" (lines 20-24).
Date:
June 23, 1914
Creator:
Willard, Thomas A.
Object Type:
Patent
System:
The Portal to Texas History
ANNUAL RADIOACTIVE WASTE TANK INSPECTION PROGRAM 2010
Aqueous radioactive wastes from Savannah River Site (SRS) separations and vitrification processes are contained in large underground carbon steel tanks. Inspections made during 2010 to evaluate these vessels and other waste handling facilities along with evaluations based on data from previous inspections are the subject of this report. The 2010 inspection program revealed that the structural integrity and waste confinement capability of the Savannah River Site waste tanks were maintained. All inspections scheduled per SRR-LWE-2009-00138, HLW Tank Farm Inspection Plan for 2010, were completed. Ultrasonic measurements (UT) performed in 2010 met the requirements of C-ESG-00006, In-Service Inspection Program for High Level Waste Tanks, Rev. 3, and WSRC-TR-2002-00061, Rev.6. UT inspections were performed on Tanks 30, 31 and 32 and the findings are documented in SRNL-STI-2010-00533, Tank Inspection NDE Results for Fiscal Year 2010, Waste Tanks 30, 31 and 32. A total of 5824 photographs were made and 1087 visual and video inspections were performed during 2010. Ten new leaksites at Tank 5 were identified in 2010. The locations of these leaksites are documented in C-ESR-G-00003, SRS High Level Waste Tank Leaksite Information, Rev.5. Ten leaksites at Tank 5 were documented during tank wall/annulus cleaning activities. None of these new leaksites …
Date:
June 23, 2011
Creator:
West, B. & Waltz, R.
Object Type:
Report
System:
The UNT Digital Library
An Anti-Symmetric Lattice for High-Intensity Rapid Cycling Synchrotrons.
Rapid cycling synchrotrons (RCSs) are used in many high power facilities like spallation neutron sources and proton drivers to accumulate and accelerate proton beams. In such accelerators, beam collimation plays a crucial role in reducing the uncontrolled beam loss. Furthermore, injection and extraction sections often need to reside in dispersion-free regions to avoid couplings; sizeable drift space is needed to house the RF accelerating cavities; long, uninterrupted straights are desired to ease injection tuning and to raise collimation efficiency. Finally, the machine circumference needs to be small to reduce construction costs. In this paper, we present a lattice satisfying these needs. The lattice contains a drift created by a missing dipole near the peak dispersion to facilitate longitudinal collimation. The compact FODO arc allows easy orbit, tune, coupling, and chromatic correction. The doublets provide long uninterrupted straights. The four-fold lattice symmetry separates injection, extraction, and collimation to different straights. This lattice is adopted for the China Spallation Neutron Source (CSNS) synchrotron [1].
Date:
June 23, 2006
Creator:
Wei, J.; Wang, S.; Fang, S.-X.; Lee, Y. Y.; Machida, S.; Prior, C. et al.
Object Type:
Article
System:
The UNT Digital Library
Antiproton stacking in the Recycler
Possibilities to accumulate antiprotons in the Recycler are considered for three different cases: with current stochastic cooling, with upgraded stochastic cooling and with electron cooling. With stochastic cooling only, even upgraded, Recycler looks hardly useful. However, with electron cooling at its goal parameters and reasonably good vacuum in the Recycler, this machine would be efficient.
Date:
June 23, 2003
Creator:
Burov, Alexey
Object Type:
Article
System:
The UNT Digital Library
Aperture studies for the Fermilab AP2 anti-proton line
The AP2 beamline transports anti-protons from the production target to the Debuncher ring. The observed aperture is smaller than that estimated from linear, on-energy optics. We have investigated possible reasons for the aperture limitation and have identified possible sources,including residual vertical dispersion from alignment errors and chromatic effects due to very large chromatic lattice functions. Some experiments have already been performed to study these effects. We present results of the experimental and theoretical studies and possible remedies.
Date:
June 23, 2004
Creator:
Reichel, Ina; Placidi, Massimo; Zisman, Mike; Gollwitzer, Keith & Werkema, Steve
Object Type:
Article
System:
The UNT Digital Library
Aperture studies with Patricia and Racetrack on simple lattices containing SSC dipoles
The PATRICIA and RACETRACK particle tracking programs have been compared by tracking on a simple lattice. The dynamic aperture was found to decrease as the number of passes through the lattice per run increased from 20 to approx. 300, and it remained constant for longer runs. The dynamic apertures found by the two programs are consistent. The dependence of the dynamic aperture on horizontal tune near a decapole resonance was investigated. RACETRACK and PATRICIA showed decreases in the aperture on opposite sides of the resonance. A second set of studies was made with PATRICIA in which the dynamic apertures of lattices consisting of cells of the types used for the Reference Designs Study were determined when random multipole errors of the dipoles were included. The dependence of aperture on the number of cells in the lattice was determined. Finally, a comparison of magnet types suggested for the SSC was made by determining the aperture of lattices containing these magnets.
Date:
June 23, 1984
Creator:
Dell, G.F.; Leemann, B. & Willeke, F.
Object Type:
Article
System:
The UNT Digital Library