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1,023 Matching Results
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Simulations of Merging and Squeezing Bunches in Booster and AGS
N/A
Date:
September 1, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Simulations of merging and squeezing bunches in booster and AGS
N/A
Date:
July 30, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Simulations of RF Capture with Barrier Bucket in Booster at Injections
N/A
Date:
May 1, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Simulations of RF capture with barrier bucket in booster at injection
As part of the effort to increase the number of ions per bunch in RHIC, a new scheme for RF capture of EBIS ions in Booster at injection has been developed. The scheme was proposed by M. Blaskiewicz and J.M. Brennan. It employs a barrier bucket to hold a half turn of beam in place during capture into two adjacent harmonic 4 buckets. After acceleration, this allows for 8 transfers of 2 bunches from Booster into 16 buckets on the AGS injection porch. During the Fall of 2011 the necessary hardware was developed and implemented by the RF and Controls groups. The scheme is presently being commissioned by K.L. Zeno with Au32+ ions from EBIS. In this note we carry out simulations of the RF capture. These are meant to serve as benchmarks for what can be achieved in practice. They also allow for an estimate of the longitudinal emittance of the bunches on the AGS injection porch.
Date:
January 23, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Parameters for the injection, acceleration, and extraction of gold and copper ions in Booster, AGS, and RHIC
N/A
Date:
November 27, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Parameters for the injection, acceleration, and extraction of uranium ions in Booster, AGS, and RHIC
N/A
Date:
November 27, 2012
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Pair Production Constraints on Superluminal Neutrinos Revisited
We revisit the pair creation constraint on superluminal neutrinos considered by Cohen and Glashow in order to clarify which types of superluminal models are constrained. We show that a model in which the superluminal neutrino is effectively light-like can evade the Cohen-Glashow constraint. In summary, any model for which the CG pair production process operates is excluded because such timelike neutrinos would not be detected by OPERA or other experiments. However, a superluminal neutrino which is effectively lightlike with fixed p{sup 2} can evade the Cohen-Glashow constraint because of energy-momentum conservation. The coincidence involved in explaining the SN1987A constraint certainly makes such a picture improbable - but it is still intrinsically possible. The lightlike model is appealing in that it does not violate Lorentz symmetry in particle interactions, although one would expect Hughes-Drever tests to turn up a violation eventually. Other evasions of the CG constraints are also possible; perhaps, e.g., the neutrino takes a 'short cut' through extra dimensions or suffers anomalous acceleration in matter. Irrespective of the OPERA result, Lorentz-violating interactions remain possible, and ongoing experimental investigation of such possibilities should continue.
Date:
February 16, 2012
Creator:
Brodsky, Stanley J. & Gardner, Susan
Object Type:
Article
System:
The UNT Digital Library
Interim Report on Multiple Sequence Alignments and TaqMan Signature Mapping to Phylogenetic Trees
The goal of this project is to develop forensic genotyping assays for select agent viruses, addressing a significant capability gap for the viral bioforensics and law enforcement community. We used a multipronged approach combining bioinformatics analysis, PCR-enriched samples, microarrays and TaqMan assays to develop high resolution and cost effective genotyping methods for strain level forensic discrimination of viruses. We have leveraged substantial experience and efficiency gained through year 1 on software development, SNP discovery, TaqMan signature design and phylogenetic signature mapping to scale up the development of forensics signatures in year 2. In this report, we have summarized the Taqman signature development for South American hemorrhagic fever viruses, tick-borne encephalitis viruses and henipaviruses, Old World Arenaviruses, filoviruses, Crimean-Congo hemorrhagic fever virus, Rift Valley fever virus and Japanese encephalitis virus.
Date:
March 27, 2012
Creator:
Gardner, S & Jaing, C
Object Type:
Report
System:
The UNT Digital Library
Interim report on updated microarray probes for the LLNL Burkholderia pseudomallei SNP array
The overall goal of this project is to forensically characterize 100 unknown Burkholderia isolates in the US-Australia collaboration. We will identify genome-wide single nucleotide polymorphisms (SNPs) from B. pseudomallei and near neighbor species including B. mallei, B. thailandensis and B. oklahomensis. We will design microarray probes to detect these SNP markers and analyze 100 Burkholderia genomic DNAs extracted from environmental, clinical and near neighbor isolates from Australian collaborators on the Burkholderia SNP microarray. We will analyze the microarray genotyping results to characterize the genetic diversity of these new isolates and triage the samples for whole genome sequencing. In this interim report, we described the SNP analysis and the microarray probe design for the Burkholderia SNP microarray.
Date:
March 27, 2012
Creator:
Gardner, S & Jaing, C
Object Type:
Report
System:
The UNT Digital Library
Interim Report on SNP analysis and forensic microarray probe design for South American hemorrhagic fever viruses, tick-borne encephalitis virus, henipaviruses, Old World Arenaviruses, filoviruses, Crimean-Congo hemorrhagic fever viruses, Rift Valley fever
The goal of this project is to develop forensic genotyping assays for select agent viruses, enhancing the current capabilities for the viral bioforensics and law enforcement community. We used a multipronged approach combining bioinformatics analysis, PCR-enriched samples, microarrays and TaqMan assays to develop high resolution and cost effective genotyping methods for strain level forensic discrimination of viruses. We have leveraged substantial experience and efficiency gained through year 1 on software development, SNP discovery, TaqMan signature design and phylogenetic signature mapping to scale up the development of forensics signatures in year 2. In this report, we have summarized the whole genome wide SNP analysis and microarray probe design for forensics characterization of South American hemorrhagic fever viruses, tick-borne encephalitis viruses and henipaviruses, Old World Arenaviruses, filoviruses, Crimean-Congo hemorrhagic fever virus, Rift Valley fever virus and Japanese encephalitis virus.
Date:
June 5, 2012
Creator:
Jaing, C & Gardner, S
Object Type:
Report
System:
The UNT Digital Library
The Impact of Intrinsic Heavy Quark Distributions in the Proton on New Physics Searches at the High Intensity Frontier
The possibility of an intense proton facility, at 'Project X' or elsewhere, will provide many new opportunities for searches for physics beyond the Standard Model. A Project X can serve a yet broader role in the search for new physics, and in this note we highlight the manner in which thus-enabled studies of the flavor structure of the proton, particularly of its intrinsic heavy quark content, facilitate other direct and indirect searches for new physics. Intrinsic heavy quarks in both light and heavy hadrons play a key role in searches for physics BSM with hadrons - and their study at the Intensity Frontier may prove crucial to establishing its existence.
Date:
February 16, 2012
Creator:
Brodsky, Stanley & Gardner, Susan
Object Type:
Article
System:
The UNT Digital Library
Site characterization methodology for deep borehole disposal.
None
Date:
September 1, 2012
Creator:
Vaughn, Palmer; Arnold, Bill Walter; Altman, Susan Jeanne; Brady, Patrick Vane & Gardner, William Payton
Object Type:
Report
System:
The UNT Digital Library
Limit of detection of Bacillus anthracis in complex soil and air samples using next-generation sequencing
None
Date:
March 15, 2012
Creator:
Be, Nicholas A.; Thissen, James B.; Gardner, Shea; McLoughlin, Kevin; Fofanov, Viacheslav; Koshinsky, Heather et al.
Object Type:
Article
System:
The UNT Digital Library
Proton beam lifetime increase with 10- and 12-pole correctors in the Relativistic Heavy Ion Collider
N/A
Date:
November 1, 2012
Creator:
Fischer, W.; Beebe-Wang, J.; Gu, X.; Luo, Y. & Nemesure, S.
Object Type:
Report
System:
The UNT Digital Library
Proton beam lifetime increase with 10- and 12-pole correctors in the Relativistic Heavy Ion Collider
N/A
Date:
October 31, 2012
Creator:
Fischer, W.; Beebe-Wang, J.; Gu, X.; Luo, Y. & Nemesure, S.
Object Type:
Report
System:
The UNT Digital Library
SELECTION OF SURPLUS PLUTONIUM MATERIALS FOR DISPOSITION TO WIPP
The U.S. Department of Energy (DOE) is preparing a Surplus Plutonium Disposition (SPD) Supplemental Environmental Impact Statement (SEIS). Included in the evaluation are up to 6 metric tons (MT) of plutonium in the form of impure oxides and metals for which a disposition plan has not been decided, among options that include preparation as feed for the Mixed Oxide Fuel Fabrication Facility; disposing to high-level waste through the Savannah River Site (SRS) HB Line and H Canyon; can-in-canister disposal using the SRS Defense Waste Processing Facility; and preparation for disposal at the Waste Isolation Pilot Plant (WIPP). DOE and SRS have identified at least 0.5 MT of plutonium that, because of high levels of chemical and isotopic impurities, is impractical for disposition by methods other than the WIPP pathway. Characteristics of these items and the disposition strategy are discussed.
Date:
June 8, 2012
Creator:
Allender, J.; Mcclard, J. & Christopher, J.
Object Type:
Article
System:
The UNT Digital Library
California GAMA Special Study: A Noble Gas Membrane Inlet Mass Spectrometry (NG-MIMS) system for water and gas samples
None
Date:
April 12, 2012
Creator:
Visser, A.; Singleton, M. J.; Hillegonds, D. J.; Velsko, C. A.; Moran, J. E. & Esser, B. K.
Object Type:
Report
System:
The UNT Digital Library
Graciously We Receive
Graciously We Receive is an ethnographic documentary film about Hearts for Homes, a volunteer Christian outreach organization that does no-cost home repairs for low income elderly homeowners. Graciously We Receive examines the symbiotic relationships between volunteers and the homeowners, addressing the need to be needed by meeting the needs of others. Using qualitative research methods derived from the social sciences, Graciously We Receive represents an advancement in media-based research methods. with the introduction of quick cine-ethnography, which combines quick ethnography methods and grounded theory for data acquisition and analysis, Graciously We Receive applies anthropological research methods to documentary film production.
Date:
May 2012
Creator:
Dent, J. Fredrick
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Hadron Physics at the Charm and Bottom Thresholds and Other Novel QCD Physics Topics at the NICA Accelerator Facility
The NICA collider project at the Joint Institute for Nuclear Research in Dubna will have the capability of colliding protons, polarized deuterons, and nuclei at an effective nucleon-nucleon center-of mass energy in the range {radical}s{sub NN} = 4 to 11 GeV. I briefly survey a number of novel hadron physics processes which can be investigated at the NICA collider. The topics include the formation of exotic heavy quark resonances near the charm and bottom thresholds, intrinsic strangeness, charm, and bottom phenomena, hidden-color degrees of freedom in nuclei, color transparency, single-spin asymmetries, the RHIC baryon anomaly, and non-universal antishadowing.
Date:
June 20, 2012
Creator:
Brodsky, Stanley J.
Object Type:
Article
System:
The UNT Digital Library
Presidential Nominating Process: Current Issues
This report discusses issues regarding the Presidential Nomination Process including information about the 2008 election, calendar changes from 1988 to 2008, changes to national party rules for 2012, an evaluation of the primary system, reform proposals, and legislative considerations.
Date:
January 27, 2012
Creator:
Coleman, Kevin J.
Object Type:
Report
System:
The UNT Digital Library
Controlling the Actuation Rate of Low Density Shape Memory Polymer Foams in Water
None
Date:
July 6, 2012
Creator:
Singhal, P.; Boyle, T.; Infanger, S.; Letts, S.; Small, W.; Maitland, D. J. et al.
Object Type:
Article
System:
The UNT Digital Library
Testing a Comprehensive Model of Muscle Dysmorphia Symptomatology in a Nonclinical Sample of Men
As increasing emphases are placed on the importance of a muscular male physique in Westernized culture, more men are experiencing eating, exercise, and body image (EEBI) disturbances. Clinician-researchers have identified a syndrome, termed muscle dysmorphia (MD), in which individuals, usually men, are pathologically preoccupied with their perceived lack of muscularity. The current study tested a modified version of an extant theoretical model of MD symptomatology as well as an alternative model of MD symptomatology. Over 700 adult men completed a demographic questionnaire, a symptom inventory, a self-esteem questionnaire, a measure of perfectionism, a measure of the media’s influence on EEBI disturbances, and measures of body dissatisfaction and MD symptoms. Structural equation modeling (SEM) was used to examine the goodness of fit of the proposed models. Overall, the first model demonstrated poor fit with the data. Conversely, the alternative model fit the data adequately. The alternative model was cross validated with a second sample, and also fit this data adequately.
Date:
August 2012
Creator:
Woodruff, Elissa J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Novel Perspectives for Hadron Physics
I discuss several novel and unexpected aspects of quantum chromodynamics. These include: (a) the nonperturbative origin of intrinsic strange, charm and bottom quarks in the nucleon at large x; the breakdown of pQCD factorization theorems due to the lensing effects of initial- and final-state interactions; (b) important corrections to pQCD scaling for inclusive reactions due to processes in which hadrons are created at high transverse momentum directly in the hard processes and their relation to the baryon anomaly in high-centrality heavy-ion collisions; and (c) the nonuniversality of quark distributions in nuclei. I also discuss some novel theoretical perspectives in QCD: (a) light-front holography - a relativistic color-confining first approximation to QCD based on the AdS/CFT correspondence principle; (b) the principle of maximum conformality - a method which determines the renormalization scale at finite order in perturbation theory yielding scheme independent results; (c) the replacement of quark and gluon vacuum condensates by 'in-hadron condensates' and how this helps to resolve the conflict between QCD vacuum and the cosmological constant.
Date:
March 9, 2012
Creator:
Brodsky, Stanley J.
Object Type:
Article
System:
The UNT Digital Library
Amplitude Analysis and Measurement of the Time-dependent CP Asymmetry of B0 to KsKsKs Decays
We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process B{sup 0} {yields} K{sub S}{sup 0}K{sub S}{sup 0}K{sub S}{sup 0} obtained using 468 x 10{sup 6} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B{sup 0} and {bar B}{sup 0} decays. We measure the total inclusive branching fraction {Beta}(B{sup 0} {yields} K{sub S}{sup 0}K{sub S}{sup 0}K{sub S}{sup 0}) = (6.19 {+-} 0.48 {+-} 0.15 {+-} 0.12) x 10{sup -6}, where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f{sub 0}(980), f{sub 0}(1710), and f{sub 2}(2010). Their respective product branching fractions are measured to be (2.70{sub -1.19}{sup +1.25} {+-} 0.36 {+-} 1.17) x 10{sup -6}, (0.50{sub -0.24}{sup +0.46} {+-} 0.04 {+-} 0.10) x 10{sup -6}, and (0.54{sub -0.20}{sup +0.21} {+-} 0.03 {+-} 0.52) x 10{sup -6}. Additionally, we determine the mixing-induced CP-violation parameters to be S = -0.94{sub -0.21}{sup +0.24} {+-} 0.06 and C = -0.17 {+-} 0.18 {+-} …
Date:
April 11, 2012
Creator:
Lees, J. P.
Object Type:
Article
System:
The UNT Digital Library