Fermi-LAT Detection of a Break in the Gamma-Ray Spectrum of the Supernova Remnant Cassiopeia A (open access)

Fermi-LAT Detection of a Break in the Gamma-Ray Spectrum of the Supernova Remnant Cassiopeia A

None
Date: November 7, 2013
Creator: Yuan, Y.; Funk, S.; Jóhannesson, G.; Lande, J.; Tibaldo, L. & Uchiyama, Y.
Object Type: Article
System: The UNT Digital Library
X-ray Analysis of Fully Depleted Thick CCDs with Small Pixel Size (open access)

X-ray Analysis of Fully Depleted Thick CCDs with Small Pixel Size

N/A
Date: October 7, 2013
Creator: V., Kotov I.; O'Connor, P.; Frank, J.; Kubanek, P. & Takacs, P.
Object Type: Article
System: The UNT Digital Library
Ultra-deep sequencing of intra-host rabies virus populations during cross-species transmission (open access)

Ultra-deep sequencing of intra-host rabies virus populations during cross-species transmission

None
Date: June 7, 2013
Creator: Borucki, M; Chen-Harris, H; Lao, V; Vanier, G; Messenger, S & Allen, J E
Object Type: Article
System: The UNT Digital Library
Development of the Machine Protection System for LCLS-I (open access)

Development of the Machine Protection System for LCLS-I

None
Date: November 7, 2013
Creator: Dusatko, J.; Boyes, M.; Krejcik, P.; Norum, S. & Olsen, J.
Object Type: Article
System: The UNT Digital Library
Structural Upgrade Study Building 313 (open access)

Structural Upgrade Study Building 313

None
Date: February 7, 2013
Creator: X, X
Object Type: Report
System: The UNT Digital Library
Improved Three-Dimensional Resistivity Data Acquisition Capabilities at the Hanford Site - 14146 (open access)

Improved Three-Dimensional Resistivity Data Acquisition Capabilities at the Hanford Site - 14146

The recent 3D electrical resistivity characterization at 241_U Tank Farm represents the first full-farm true 3D environmental resistivity deployment in the world. Technological and manufacturing developments by the vendor resulted in a data acquisition system that far surpasses the ability of the previous off-the-shelf systems. The new data acquisition system allows for 180 channels, which enables the full-farm 3D acquisition without the inaccuracies associated with combining multiple datasets. This ultimately leads to a more accurate model of the subsurface and a better understanding of moisture and contaminant distribution within the vadose zone. Additionally, advancements in electrical noise filters and increased output power resulted in better quality data than previously acquired at the site, reducing the amount of poor quality data by more than half. Ultimately, the new, improved system increased the speed of data acquisition and quality of the final results. The system allowed a reduction in field labor and field work duration to half the field budget estimates, resulting in a 25% reduction in overall project costs. The new resistivity data acquisition system represents technological advancements resulting in a greater quantity of data with decreased project costs.
Date: November 7, 2013
Creator: Glaser, Danney R.; Eberlein, Susan J.; McNeill, M.; Hildebrand, R. Doug; Levitt, M. & Crook, N.
Object Type: Article
System: The UNT Digital Library
Steady-State Gyrokinetics Transport Code (SSGKT), A Scientific Application Partnership with the Framework Application for Core-Edge Transport Simulations, Final Report (open access)

Steady-State Gyrokinetics Transport Code (SSGKT), A Scientific Application Partnership with the Framework Application for Core-Edge Transport Simulations, Final Report

This project initiated the development of TGYRO ? a steady-state Gyrokinetic transport code (SSGKT) that integrates micro-scale GYRO turbulence simulations into a framework for practical multi-scale simulation of conventional tokamaks as well as future reactors. Using a lightweight master transport code, multiple independent (each massively parallel) gyrokinetic simulations are coordinated. The capability to evolve profiles using the TGLF model was also added to TGYRO and represents a more typical use-case for TGYRO. The goal of the project was to develop a steady-state Gyrokinetic transport code (SSGKT) that integrates micro-scale gyrokinetic turbulence simulations into a framework for practical multi-scale simulation of a burning plasma core ? the International Thermonuclear Experimental Reactor (ITER) in particular. This multi-scale simulation capability will be used to predict the performance (the fusion energy gain, Q) given the H-mode pedestal temperature and density. At present, projections of this type rely on transport models like GLF23, which are based on rather approximate fits to the results of linear and nonlinear simulations. Our goal is to make these performance projections with precise nonlinear gyrokinetic simulations. The method of approach is to use a lightweight master transport code to coordinate multiple independent (each massively parallel) gyrokinetic simulations using the GYRO …
Date: November 7, 2013
Creator: Fahey, Mark R. & Candy, Jeff
Object Type: Report
System: The UNT Digital Library
Letter Report for Analytical Results for Two Concrete and Three Soil Samples Associated with the Worcester Polytechnic Institute in Worcester Massachusetts (open access)

Letter Report for Analytical Results for Two Concrete and Three Soil Samples Associated with the Worcester Polytechnic Institute in Worcester Massachusetts

Oak Ridge Associated Universities (ORAU), under the Oak Ridge Institute tor Science and Education (ORISE) contract, received two concrete core and three soil samples on August 26, 2013 from the Worcester Polytechnic Institute in Worcester, Massachusetts. The samples were received in good condition. The samples were analyzed tor activation and fission products by gamma spectrometry. The sample collection data and identification numbers are tabulated and the gamma spectrometry data are presented. The pertinent procedure reference is included with the data table.
Date: October 7, 2013
Creator: Ivey, Wade
Object Type: Report
System: The UNT Digital Library
Unveiling the Nature of the Unidentified Gamma-ray Sources VI: Gamma-ray Blazar Candidates in the WISH Survey and their Radio Properties (open access)

Unveiling the Nature of the Unidentified Gamma-ray Sources VI: Gamma-ray Blazar Candidates in the WISH Survey and their Radio Properties

None
Date: November 7, 2013
Creator: Nori, M.; Giroletti, M.; Massaro, F.; D'Abrusco, R.; Paggi, A. & Tosti, G.
Object Type: Article
System: The UNT Digital Library
Tier 1 Seismic Evaluation of 41 Buildings (open access)

Tier 1 Seismic Evaluation of 41 Buildings

None
Date: February 7, 2013
Creator: Degenkolb, X.
Object Type: Report
System: The UNT Digital Library
Implementation of Recommendations from the One System Comparative Evaluation of the Hanford Tank Farms and Waste Treatment Plant Safety Bases - 14137 (open access)

Implementation of Recommendations from the One System Comparative Evaluation of the Hanford Tank Farms and Waste Treatment Plant Safety Bases - 14137

A Comparative Evaluation was conducted for One System Integrated Project Team to compare the safety bases for the Hanford Waste Treatment and Immobilization Plant Project (WTP) and Tank Operations Contract (TOC) (i.e., Tank Fanns) by an Expert Review Team. The evaluation had an overarching purpose to facilitate effective integration between WTP and TOC safety bases. It was to provide One System management with an objective evaluation of identified differences in safety basis process requirements, guidance, direction, procedures, and products (including safety controls, key safety basis inputs and assumptions, and consequence calculation methodologies) between WTP and TOC. The evaluation identified 25 recommendations (Opportunities for Integration). The resolution of these recommendations resulted in 16 implementation plans. The completion of these implementation plans will help ensure consistent safety bases for WTP and TOC along with consistent safety basis processes. procedures, and analyses. and should increase the likelihood of a successful startup of the WTP. This early integration will result in long-term cost savings and significant operational improvements. In addition, the implementation plans lead to the development of eight new safety analysis methodologies that can be used at other U.S. Department of Energy (US DOE) complex sites where URS Corporation is involved.
Date: November 7, 2013
Creator: Garrett, Richard L.; Niemi, Belinda J.; Paik, Ingle K.; Buczek, Jeffrey A.; Lietzow, J.; McCoy, F. et al.
Object Type: Article
System: The UNT Digital Library
Environmental Remediation Science at Beamline X26A at the National Synchrotron Light Source- Final Report (open access)

Environmental Remediation Science at Beamline X26A at the National Synchrotron Light Source- Final Report

The goal of this project was to provide support for an advanced X-ray microspectroscopy facility at the National Synchrotron Light Source, Brookhaven National Laboratory. This facility is operated by the University of Chicago and the University of Kentucky. The facility is available to researchers at both institutions as well as researchers around the globe through the general user program. This facility was successfully supported during the project period. It provided access to advanced X-ray microanalysis techniques which lead to fundamental advances in understanding the behavior of contaminants and geochemistry that is applicable to environmental remediation of DOE legacy sites as well as contaminated sites around the United States and beyond.
Date: November 7, 2013
Creator: Bertsch, Paul
Object Type: Report
System: The UNT Digital Library
Evaluating Feed Delivery Performance in Scaled Double-Shell Tanks - 14070 (open access)

Evaluating Feed Delivery Performance in Scaled Double-Shell Tanks - 14070

The Hanford Tank Operations Contractor (TOC) and the Hanford Waste Treatment and Immobilization Plant (WTP) contractor are both engaged in demonstrating mixing, sampling, and transfer system capability using simulated Hanford High-Level Waste (HLW) formulations. This work represents one of the remaining technical issues with the high-level waste treatment mission at Hanford. The TOCs� ability to adequately mix and sample high-level waste feed to meet the WTP WAC Data Quality Objectives must be demonstrated. The tank mixing and feed delivery must support both TOC and WTP operations. The tank mixing method must be able to remove settled solids from the tank and provide consistent feed to the WTP to facilitate waste treatment operations. Two geometrically scaled tanks were used with a broad spectrum of tank waste simulants to demonstrate that mixing using two rotating mixer jet pumps yields consistent slurry compositions as the tank is emptied in a series of sequential batch transfers. Testing showed that the concentration of slow settling solids in each transfer batch was consistent over a wide range of tank operating conditions. Although testing demonstrated that the concentration of fast settling solids decreased by up to 25% as the tank was emptied, batch-to-batch consistency improved as mixer …
Date: November 7, 2013
Creator: Lee, Kearn P. & Thien, Michael G.
Object Type: Article
System: The UNT Digital Library
Sorbent Selection Progress Report (open access)

Sorbent Selection Progress Report

None
Date: October 7, 2013
Creator: Stepinski, D.; Ziegler, A.J.; Jerden, J.; Fortner, J.; Quigley, K.; Mertz, C. et al.
Object Type: Report
System: The UNT Digital Library
Van de Graaff Experiments: Mo Redox Chemistry and Iodine Speciation (open access)

Van de Graaff Experiments: Mo Redox Chemistry and Iodine Speciation

None
Date: October 7, 2013
Creator: Youker, A. J.; Krebs, J. F.; Hebden, A.; Quigley, K.; Stepinski, D. & Vandegrift, G. F. (Chemical Sciences and Engineering Division)
Object Type: Report
System: The UNT Digital Library
Compilation of Criteria and Summaries from B332 Seismic Evaluations for the Initial Scoping Document Release of the HS-45 LLNL Audit, February 7, 2013 (open access)
DOE Hanford Network Upgrades and Disaster Recovery Exercise Support the Cleanup Mission Now and into the Future - 14303 (open access)

DOE Hanford Network Upgrades and Disaster Recovery Exercise Support the Cleanup Mission Now and into the Future - 14303

In 2013, the U.S. Department of Energy�s (DOE) Hanford Site, located in Washington State, funded an update to the critical network infrastructure supporting the Hanford Federal Cloud (HFC). The project, called ET-50, was the final step in a plan that was initiated five years ago called �Hanford�s IT Vision, 2015 and Beyond.� The ET-50 project upgraded Hanford�s core data center switches and routers along with a majority of the distribution layer switches. The upgrades allowed HFC the network intelligence to provide Hanford with a more reliable and resilient network architecture. The culmination of the five year plan improved network intelligence and high performance computing as well as helped to provide 10Gbps capable links between core backbone devices (10 times the previous bandwidth). These improvements allow Hanford the ability to further support bandwidth intense applications, such as video teleconferencing. The ET-50 switch upgrade, along with other upgrades implemented from the five year plan, have prepared Hanford�s network for the next evolution of technology in voice, video, and data. Hand-in-hand with ET-50�s major data center outage, Mission Support Alliance�s (MSA) Information Management (IM) organization executed a disaster recovery (DR) exercise to perform a true integration test and capability study. The DR scope …
Date: November 7, 2013
Creator: Eckman, Todd J.; Hertzel, Ali K. & Lane, James J.
Object Type: Article
System: The UNT Digital Library
A Compilation of Internship Reports - 2013 (open access)

A Compilation of Internship Reports - 2013

N/A
Date: August 7, 2013
Creator: M., Stegman; Morris, M. & Blackburn, N.
Object Type: Report
System: The UNT Digital Library
Fourier Transform Rheology of Paste Explosives: I. Semtex Formulations (open access)

Fourier Transform Rheology of Paste Explosives: I. Semtex Formulations

None
Date: August 7, 2013
Creator: Hoffman, D. M.; Turner, H. & Racoveanu, A.
Object Type: Article
System: The UNT Digital Library
Final scientific and technical report for grant DE-AI02-93ER40784: Fundamental Physics with Cold Neutrons (open access)

Final scientific and technical report for grant DE-AI02-93ER40784: Fundamental Physics with Cold Neutrons

There have been a growing number of notable results in fundamental neutron physics, which are briefly summarized.
Date: February 7, 2013
Creator: Dewey, Maynard, S.
Object Type: Report
System: The UNT Digital Library
Baryonic B Decays (open access)

Baryonic B Decays

None
Date: June 7, 2013
Creator: Shiu, Jing-Ge & /Taiwan, Natl. Taiwan U.
Object Type: Article
System: The UNT Digital Library
STELLOPT Modeling of the 3D Diagnostic Response in ITER (open access)

STELLOPT Modeling of the 3D Diagnostic Response in ITER

The ITER three dimensional diagnostic response to an n=3 resonant magnetic perturbation is modeled using the STELLOPT code. The in-vessel coils apply a resonant magnetic perturbation (RMP) fi eld which generates a 4 cm edge displacement from axisymmetry as modeled by the VMEC 3D equilibrium code. Forward modeling of flux loop and magnetic probe response with the DIAGNO code indicates up to 20 % changes in measured plasma signals. Simulated LIDAR measurements of electron temperature indicate 2 cm shifts on the low field side of the plasma. This suggests that the ITER diagnostic will be able to diagnose the 3D structure of the equilibria.
Date: May 7, 2013
Creator: Lazerson, Samuel A
Object Type: Report
System: The UNT Digital Library
Cascaded Modulator-chicane Modules for Optical Manipulation of Relativistic Electron Beams (open access)

Cascaded Modulator-chicane Modules for Optical Manipulation of Relativistic Electron Beams

None
Date: February 7, 2013
Creator: Hemsing, Erik & Xiang, Dao
Object Type: Article
System: The UNT Digital Library
Theoretical and Experimental Studies of Magneto-Rayleigh-Taylor Instabilities (open access)

Theoretical and Experimental Studies of Magneto-Rayleigh-Taylor Instabilities

Magneto-Rayleigh-Taylor instability (MRT) is important to magnetized target fusion, wire-array z-pinches, and equation-of-state studies using flyer plates or isentropic compression. It is also important to the study of the crab nebula. The investigators performed MRT experiments on thin foils, driven by the mega-ampere linear transformer driver (LTD) facility completed in their laboratory. This is the first 1-MA LTD in the USA. Initial experiments on the seeding of MRT were performed. Also completed was an analytic study of MRT for a finite plasma slab with arbitrary magnetic fields tangential to the interfaces. The effects of magnetic shear and feedthrough were analyzed.
Date: July 7, 2013
Creator: Lau, Yue Ying & Gilgenbach, Ronald
Object Type: Report
System: The UNT Digital Library