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1 - 24 of
654
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Proceedings of RIKEN BNL Research Center Workshop: Initial State Fluctuations and Final-State Particle Correlations
N/A
Date:
February 2, 2011
Creator:
A., Dumitru; Molnar, D. & Wang, F.
Object Type:
Report
System:
The UNT Digital Library
Hydrogen Safety Training for Researchers and Technical Personnel
None
Date:
December 2, 2011
Creator:
Aceves, S. M.; Espinosa-Loza, F.; Petitpas, G.; Ross, T. O. & Switzer, V. A.
Object Type:
Article
System:
The UNT Digital Library
Renaissance of the ~ 1-TeV Fixed-Target Program
This document describes the physics potential of a new fixed-target program based on a {approx}1 TeV proton source. Two proton sources are potentially available in the future: the existing Tevatron at Fermilab, which can provide 800 GeV protons for fixed-target physics, and a possible upgrade to the SPS at CERN, called SPS+, which would produce 1 TeV protons on target. In this paper we use an example Tevatron fixed-target program to illustrate the high discovery potential possible in the charm and neutrino sectors. We highlight examples which are either unique to the program or difficult to accomplish at other venues.
Date:
December 2, 2011
Creator:
Adams, T.; Appel, J. A.; Arms, K. E.; Balantekin, A. B.; Conrad, J. M.; Cooper, P. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Ensemble: 2011-04-02 – African Cultural Festival
Access:
Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Voertman Hall.
Date:
April 2, 2011
Creator:
Afrikania Cultural Troupe & Alorwoyie, Torgbui Midawo Gideon Foli
Object Type:
Sound
System:
The UNT Digital Library
Solubility of Phenothiazine in Water, Ethanol, and Propylene Glycol at (298.2 to 338.2) K and Their Binary and Ternary Mixtures at 298.2 K
Article on the solubility of phenothiazine in water, ethanol, and propylene glycol at (298.2 to 338.2) K and their binary and ternary mixtures at 298.2 K.
Date:
June 2, 2011
Creator:
Ahmadian, Somaieh; Panahi-Azar, Vahid; Fakhree, Mohammad Amin Abolghassemi; Acree, William E. (William Eugene) & Jouyban, Abolghasem
Object Type:
Article
System:
The UNT Digital Library
Parallel Computation of Integrated Electromagnetic, Thermal and Structural Effects for Accelerator Cavities
The successful operation of accelerator cavities has to satisfy both rf and mechanical requirements. It is highly desirable that electromagnetic, thermal and structural effects such as cavity wall heating and Lorentz force detuning in superconducting rf cavities can be addressed in an integrated analysis. Based on the SLAC parallel finite-element code infrastructure for electromagnetic modeling, a novel multi-physics analysis tool has been developed to include additional thermal and mechanical effects. The parallel computation enables virtual prototyping of accelerator cavities on computers, which would substantially reduce the cost and time of a design cycle. The multi-physics tool is applied to the LCLS rf gun for electromagnetic, thermal and structural analyses.
Date:
November 2, 2011
Creator:
Akcelik, V.; Candel, A. E.; Kabel, A. C.; Ko, K.; Lee, L.; Li, Z. et al.
Object Type:
Article
System:
The UNT Digital Library
The 2010 Oil Spill: MMS/BOEMRE and NEPA
This report reviews the environmental procedures required following the explosion of an oil well on a tract leased by BP from the federal government.
Date:
March 2, 2011
Creator:
Alexander, Kristina
Object Type:
Report
System:
The UNT Digital Library
Nuclear Power Plant Design and Seismic Safety Considerations
This report presents some of the general design concepts of operating nuclear power plants in order to discuss design considerations for seismic events. This report does not attempt to conclude whether one design is inherently safer or less safe than another plant. Nor does it attempt to conclude whether operating nuclear power plants are at any greater or lesser risk from earthquakes given recent updates to seismic data and seismic hazard maps.
Date:
May 2, 2011
Creator:
Andrews, Anthony
Object Type:
Report
System:
The UNT Digital Library
Search for 14.4-KeV Solar Axions Emitted in the M1-Transition of Fe-57 Nuclei with CAST
We have searched for 14.4 keV solar axions or more general axion-like particles (ALPs), that may be emitted in the M1 nuclear transition of 57Fe, by using the axion-to-photon conversion in the CERN Axion Solar Telescope (CAST) with evacuated magnet bores (Phase I). From the absence of excess of the monoenergetic X-rays when the magnet was pointing to the Sun, we set model-independent constraints on the coupling constants of pseudoscalar particles that couple to two photons and to a nucleon g{sub ay}|-1.19g{sub aN}{sup 0}+g{sub aN}{sup 3}| < 1.36 x 10{sup -16} GeV{sup -1} for ma < 0.03 eV at the 95% confidence level.
Date:
December 2, 2011
Creator:
Andriamonje, S.; Aune, S.; Autiero, D.; Barth, K.; Belov, A.; Beltran, B. et al.
Object Type:
Article
System:
The UNT Digital Library
U.S.-EU Cooperation Against Terrorism
The September 11, 2001, terrorist attacks gave new momentum to European Union (EU) initiatives to combat terrorism and improve police, judicial, and intelligence cooperation among its member states. Since the 2001 attacks, the EU has sought to speed up its efforts to harmonize national laws and bring down barriers among member states' law enforcement authorities so that information can be meaningfully shared and suspects apprehended expeditiously. Among other steps, the EU has established a common definition of terrorism and a common list of terrorist groups, an EU arrest warrant, enhanced tools to stem terrorist financing, and new measures to strengthen external EU border controls and improve aviation security.
Date:
May 2, 2011
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
Decaying Dark Matter As a Probe of Unification And TeV Spectroscopy
None
Date:
December 2, 2011
Creator:
Arvanitaki, Asimina; /UC, Berkeley /LBL, Berkeley; Dimopoulos, Savas; /Stanford U., Phys. Dept.; Dubovsky, Sergei; /Stanford U., Phys. Dept. /Moscow, INR et al.
Object Type:
Article
System:
The UNT Digital Library
Proceedings of RIKEN BNL Research Center Workshop: Brookhaven Summer Program on Nucleon Spin Physics
Understanding the structure of the nucleon is of fundamental importance in sub-atomic physics. Already the experimental studies on the electro-magnetic form factors in the 1950s showed that the nucleon has a nontrivial internal structure, and the deep inelastic scattering experiments in the 1970s revealed the partonic substructure of the nucleon. Modern research focuses in particular on the spin and the gluonic structure of the nucleon. Experiments using deep inelastic scattering or polarized p-p collisions are carried out in the US at the CEBAF and RHIC facilities, respectively, and there are other experimental facilities around the world. More than twenty years ago, the European Muon Collaboration published their first experimental results on the proton spin structure as revealed in polarized deep inelastic lepton-nucleon scattering, and concluded that quarks contribute very little to the proton's spin. With additional experimental and theoretical investigations and progress in the following years, it is now established that, contrary to naive quark model expectations, quarks and anti-quarks carry only about 30% of the total spin of the proton. Twenty years later, the discovery from the polarized hadron collider at RHIC was equally surprising. For the phase space probed by existing RHIC experiments, gluons do not seem to …
Date:
August 2, 2011
Creator:
Aschenauer, A.; Qiu, Jianwei; Vogelsang, W. & Yuan, F.
Object Type:
Report
System:
The UNT Digital Library
The Debt Limit: History and Recent Increases
This report discusses how the total debt of the federal government can increase, an historical overview of debt limits, and how the current economic slowdown has led to higher deficits and thereby a series of debt limit increases, as well as legislation related to these increases.
Date:
May 2, 2011
Creator:
Austin, D. Andrew & Levit, Mindy R.
Object Type:
Report
System:
The UNT Digital Library
The Debt Limit: History and Recent Increases
This report discusses how the total debt of the federal government can increase, an historical overview of debt limits, and how the current economic slowdown has led to higher deficits and thereby a series of debt limit increases, as well as legislation related to these increases.
Date:
May 2, 2011
Creator:
Austin, D. Andrew & Levit, Mindy R.
Object Type:
Report
System:
The UNT Digital Library
The Rambler (Fort Worth, Tex.), Vol. 94, No. 3, Ed. 1 Wednesday, February 2, 2011
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
February 2, 2011
Creator:
Banks, Shauna
Object Type:
Newspaper
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 94, No. 7, Ed. 1 Wednesday, March 2, 2011
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
March 2, 2011
Creator:
Banks, Shauna
Object Type:
Newspaper
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 94, No. 22, Ed. 1 Wednesday, November 2, 2011
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
November 2, 2011
Creator:
Banks, Shauna
Object Type:
Newspaper
System:
The Portal to Texas History
Trade Promotion Authority and the U.S.-South Korea Free Trade Agreement
This report looks at the effects of the Korean Free Trade Agreement (KORUS FTA) on side agreements via the North American Free Trade Agreement (NAFTA).
Date:
March 2, 2011
Creator:
Barbour, Emily C.
Object Type:
Report
System:
The UNT Digital Library
ITER Core Imaging X-Ray Spectrometer Conceptual Design and Performance Assessment - Phase 2
During Phase 2 of our study of the CIXS conceptual design we have tackled additional important issues that are unique to the ITER environment. These include the thermal control of the crystal and detector enclosures located in an environment with a 100-250 C ambient temperature, tritium containment, and the range of crystal and detector movement based on the need for spectral adjustments and the desire to make measurements of colder plasmas. In addressing these issues we have selected a ''Dewar''-type enclosure for the crystals and detectors. Applying realistic view factors for radiant heat and making allowance for conduction we have made engineering studies of this enclosure and showed that the cooling requirements can be solved and the temperature can be kept sufficiently constant without compromising the specification parameters of the CIXS. We have chosen a minimum 3 mm combined thickness of the six beryllium windows needed in a Dewar-type enclosure and showed that a single window of 0.5 mm thickness satisfies tritium containment requirements. For measuring the temperature in cooler ITER plasmas, we have chosen to use the K-shell lines of Fe24+. Iron is the preferred choice because its radiation can be analyzed with the identical CIXS settings used for …
Date:
January 2, 2011
Creator:
Beiersdorfer, P; Wen, J; Dunn, J & Morris, K
Object Type:
Report
System:
The UNT Digital Library
Self Assembly of Electronically-Active Materials and Devices
None
Date:
March 2, 2011
Creator:
Black, C.T.
Object Type:
Article
System:
The UNT Digital Library
First Measurements of the Longitudinal Bunch Profile at SLAC Using Coherent Smith-Purcell Radiation at 28GeV
Coherent Smith-Purcell radiation has been demonstrated as a technique for measuring the longitudinal profile of charged particles bunches in the low to intermediate energy range. However, with the advent of the International Linear Collider, the need has arisen for a non-invasive method of measuring the bunch profile at extremely high energies. Smith-Purcell radiation has been used for the first time in the multi-GeV regime to measure the longitudinal profile of the 28GeV SLAC beam. The experiment has both successfully determined the bunch length, and has also demonstrated its sensitivity to bunch profile changes. The challenges associated with this technique, and its prospects as a diagnostic tool are reported here.
Date:
November 2, 2011
Creator:
Blackmore, V.; Doucas, G.; Ottewell, B.; Perry, C.; Kimmitt, M.F.; Arnold, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Application of Developed APCVD Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting
Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high cost materials such as indium tin oxide (ITO) or Indium zinc oxide (IZO) as the transparent conducting oxide (TCO) on display glass. However, for OLED lighting to penetrate into general illumination, economics and sustainable materials are critical. The issues with ITO have been documented at the DOE SSL R&D and Manufacturing workshops for the last 5 years and the issue is being exacerbated by export controls from China (one of the major sources of elemental indium). Therefore, ITO is not sustainable because of the fluctuating costs and the United States (US) dependency on other nations such as China. Numerous alternatives to ITO/IZO are being evaluated such as Ag nanoparticles/nanowires, carbon nanotubes, graphene, and other metal oxides. Of these other metal oxides, doped zinc oxide has attracted a lot of attention over the last 10 years. The volume of zinc mined is a factor of 80,000 greater than indium and the US has significant volumes of zinc mined domestically, resulting in the ability for the US to be self-sufficient for this element that can be …
Date:
January 2, 2011
Creator:
Bluhm, Martin; Coffey, James; Korotkov, Roman; Polsz, Craig; Salemi, Alexandre; Smith, Robert et al.
Object Type:
Report
System:
The UNT Digital Library
Clean Energy Standard: Potential Qualifying Energy Sources
This report discusses potential qualifying Energy Sources for Clean Energy Standard.
Date:
May 2, 2011
Creator:
Bracmort, Kelsi; Brown, Phillip; Folger, Peter; Holt, Mark; Ratner, Michael & Sissine, Fred
Object Type:
Report
System:
The UNT Digital Library
Impact of Spherical Inclusion Mean Chord Length and Radius Distribution on Three-Dimensional Binary Stochastic Medium Particle Transport
We describe a parallel benchmark procedure and numerical results for a three-dimensional binary stochastic medium particle transport benchmark problem. The binary stochastic medium is composed of optically thick spherical inclusions distributed in an optically thin background matrix material. We investigate three sphere mean chord lengths, three distributions for the sphere radii (constant, uniform, and exponential), and six sphere volume fractions ranging from 0.05 to 0.3. For each sampled independent material realization, we solve the associated transport problem using the Mercury Monte Carlo particle transport code. We compare the ensemble-averaged benchmark fiducial tallies of reflection from and transmission through the spatial domain as well as absorption in the spherical inclusion and background matrix materials. For the parameter values investigated, we find a significant dependence of the ensemble-averaged fiducial tallies on both sphere mean chord length and sphere volume fraction, with the most dramatic variation occurring for the transmission through the spatial domain. We find a weaker dependence of most benchmark tally quantities on the distribution describing the sphere radii, provided the sphere mean chord length used is the same in the different distributions. The exponential distribution produces larger differences from the constant distribution than the uniform distribution produces. The transmission through …
Date:
March 2, 2011
Creator:
Brantley, P S & Martos, J N
Object Type:
Article
System:
The UNT Digital Library