2006 Annual Operations Report for INTEC Operable Unit 3-13, Group 1, Tank Farm Interim Action (open access)

2006 Annual Operations Report for INTEC Operable Unit 3-13, Group 1, Tank Farm Interim Action

This annual operations report describes the requirements followed and activities conducted to inspect, monitor, and maintain the items installed during performance of the Waste Area Group 3, Operable Unit 3-13, Group 1, Tank Farm Interim Action, at the Idaho Nuclear Technology and Engineering Center. This report covers the time period from January 1 through December 31, 2006, and describes inspection and monitoring activities for the surface-sealed areas within the tank farm, concrete-lined ditches and culverts in and around the tank farm, the lift station, and the lined evaporation pond. These activities are intended to assure that the interim action is functioning adequately to meet the objectives stated in the Operable Unit 3-13, Record of Decision for the Group 1, Tank Farm Interim Action (DOE/ID-10660) as described in the Group 1 Remedial Design/Remedial Action Work Plan (DOE/ID-10772).
Date: February 14, 2007
Creator: Shanklin, D. E.
Object Type: Report
System: The UNT Digital Library
2nd Annual DOE-ERSP PI Meeting: Abstracts (open access)

2nd Annual DOE-ERSP PI Meeting: Abstracts

Welcome to the annual 2007 Environmental Remediation Sciences Program (ERSP) Principal Investigators (PIs) meeting. The purpose of this meeting is to bring together all of the lead PIs and key Co-PIs in the program to share and review the results of funded research from the past year. This meeting allows program managers from the Environmental Remediation Sciences Division (ERSD) within the Office of Biological and Environmental Research (OBER) to gauge the progress and significance of the funded research, and it is also an important venue to showcase ERSP research to interested parties within DOE and other invited federal agency representatives. Additionally, these meetings should serve as an opportunity for funded PIs to view their research in the context of the entire ERSP portfolio. Past ERSP meetings have been very important venues for detailed discussion of research results among PIs, development of new research ideas, fostering new collaborations and discussion with ERSD program managers on future research efforts and/or initiatives within the program. In short, these meetings are an important resource for both program managers and PIs. There will be only one ERSP PI meeting for 2007. In years past, ERSD has sponsored two PI meetings, one in the spring and …
Date: March 14, 2007
Creator: Hazen, Terry C.
Object Type: Article
System: The UNT Digital Library
Active Damping of the E-P Instability at the LANL PSR (open access)

Active Damping of the E-P Instability at the LANL PSR

A prototype of an analog, transverse (vertical) feedback system for active damping of the two-stream (e-p) instability has been developed and successfully tested at the Los Alamos National Laboratory Proton Storage Ring (PSR). This system was able to improve the instability threshold by approximately 30% (as measured by the change in RF buncher voltage at instability threshold). Evidence obtained from these tests suggests that further improvement in performance is limited by beam leakage into the gap at lower RF buncher voltage and the onset of instability in the horizontal plane, which had no feedback. Here we describe the present system configuration, system optimization, results of several recent experimental tests, and results from studies of factors limiting its performance.
Date: November 14, 2007
Creator: McCrady, R.; Macek, R.J.; Zaugg, T.; Alamos, /Los; Assadi, S.; Deibele, C. et al.
Object Type: Article
System: The UNT Digital Library
AGN-Induced Cavities in NGC 1399 And NGC 4649 (open access)

AGN-Induced Cavities in NGC 1399 And NGC 4649

We present an analysis of archival Chandra and VLA observations of the E0 galaxy NGC1399 and the E2 galaxy NGC4649 in which we investigate cavities in the surrounding X-ray emitting medium caused by the central AGN. We calculate the jet power required for the AGN to evacuate these cavities and find values of {approx} 8x10{sup 41} erg s-1 and {approx} 14x10{sup 41} erg s{sup -1} for the lobes of NGC1399 and {approx} 7x10{sup 41} erg s{sup -1} and {approx} 6x1041 erg s{sup -1} for those of NGC4649. We also calculate the k/f values for each cavity, where k is the ratio of the total particle energy to that of electrons radiating in the range of 10 MHz to 10 GHz, and f is the volume filling factor of the plasma in the cavity. We find that the values of k/f for the lobes of NGC1399 are {approx} 93 and {approx} 190, and those of the lobes of NGC4649 are {approx} 15000 and {approx} 12000. We conclude that the assumed spectrum describes the electron distribution in the lobes of NGC1399 reasonably well, and that there are few entrained particles. For NGC4649, either there are many entrained particles or the model spectrum …
Date: November 14, 2007
Creator: Shurkin, K.; U., /New Mexico; Dunn, R. J. H.; U., /Southampton; Gentile, G.; Taylor, G. B. et al.
Object Type: Article
System: The UNT Digital Library

Air Cooling Technology for Power Electronics Thermal Control

Assessing potential for air cooling in power electronics is a critical factor in power electronics equipment. NREL aims to assess effective air cooling techniques for power electronics technologies.
Date: November 14, 2007
Creator: Bharathan, D.
Object Type: Presentation
System: The UNT Digital Library
Amplitude variations on the Extreme Adaptive Optics testbed (open access)

Amplitude variations on the Extreme Adaptive Optics testbed

High-contrast adaptive optics systems, such as those needed to image extrasolar planets, are known to require excellent wavefront control and diffraction suppression. At the Laboratory for Adaptive Optics on the Extreme Adaptive Optics testbed, we have already demonstrated wavefront control of better than 1 nm rms within controllable spatial frequencies. Corresponding contrast measurements, however, are limited by amplitude variations, including those introduced by the micro-electrical-mechanical-systems (MEMS) deformable mirror. Results from experimental measurements and wave optic simulations of amplitude variations on the ExAO testbed are presented. We find systematic intensity variations of about 2% rms, and intensity variations with the MEMS to be 6%. Some errors are introduced by phase and amplitude mixing because the MEMS is not conjugate to the pupil, but independent measurements of MEMS reflectivity suggest that some error is introduced by small non-uniformities in the reflectivity.
Date: August 14, 2007
Creator: Evans, Julia; Thomas, Sandrine; Dillon, Daren; Gavel, Donald; Phillion, Donald & Macintosh, Bruce
Object Type: Article
System: The UNT Digital Library
Analysis of cause and mechanism for injection-induced seismicityat the Geysers Geothermal Field, California (open access)

Analysis of cause and mechanism for injection-induced seismicityat the Geysers Geothermal Field, California

We analyzed relative contributions to the cause andmechanism of injection-induced seismicity at The Geysers geothermalfield, California, using coupled thermal-hydrological-mechanicalmodeling. Our analysis shows that the most important cause forinjection-induced seismicity is injection-induced cooling and associatedthermal-elastic shrinkage that changes the stress state in such a waythat mechanical failure and seismicity can be induced. Specifically, thecooling shrinkage results in unloading and associated loss of shearstrength in critically shear-stressed fractures, which are thenreactivated. Thus, our analysis shows that cooling-induced shear slipalong fractures is the dominant mechanism of injection-induced seismicityat The Geysers.
Date: June 14, 2007
Creator: Rutqvist, Jonny & Oldenburg, Curtis
Object Type: Article
System: The UNT Digital Library
Analysis of Slice Transverse Emittance Evolution in a Photocathode RF Gun (open access)

Analysis of Slice Transverse Emittance Evolution in a Photocathode RF Gun

This report is an analysis of slice transverse emittance evolution in a photocathode RF gun
Date: October 14, 2007
Creator: Huang, Zhirong; Ding, Yuantao & Qiang, Ji
Object Type: Article
System: The UNT Digital Library
ANALYSIS OF SPECIAL WASTE CONFIGURATIONS AT THE SRS WASTE MANAGEMENT FACILITIES (open access)

ANALYSIS OF SPECIAL WASTE CONFIGURATIONS AT THE SRS WASTE MANAGEMENT FACILITIES

Job Control Waste (JCW) at the Savannah River Site (SRS) Solid Waste Management Facilities (SWMF) may be disposed of in special containers, and the analysis of these containers requires developing specific analysis methodologies. A method has been developed for the routine assay of prohibited items (liquids, etc.) contained in a 30-gallon drum that is then placed into a 55-gallon drum. Method development consisted of system calibration with a NIST standard at various drum-to-detector distances, method verification with a liquid sample containing a known amount of Pu-238, and modeling the inner container using Ortec Isotopic software. Using this method for measurement of the known standard in the drum-in-drum configuration produced excellent agreement (within 15%) with the known value. Savannah River Site Solid Waste Management also requested analysis of waste contained in large black boxes (commonly 18-feet x 12-feet x 7-feet) stored at the SWMF. These boxes are frequently stored in high background areas and background radiation must be considered for each analysis. A detection limit of less than 150 fissile-gram-equivalents (FGE) of TRU waste is required for the black-box analyses. There is usually excellent agreement for the measurements at different distances and measurement uncertainties of about 50% are obtained at distances …
Date: May 14, 2007
Creator: Casella, V & Raymond Dewberry, R
Object Type: Article
System: The UNT Digital Library
Aquifer Tube Sampling Along the 100-N Area Shoreline (open access)

Aquifer Tube Sampling Along the 100-N Area Shoreline

This report contains citrate data for groundwaters received from the 100-N Area. On April 4, 2007, 7 water samples were received from the 100-N Area for citrate analysis. The analyses for this project were performed at the 325 building located in the 300 Area of the Hanford Site. The analyses were performed according to Pacific Northwest National Laboratory (PNNL) approved procedures. The data sets include the sample identification numbers, analytical results, estimated quantification limits (EQL) and quality control data.
Date: August 14, 2007
Creator: Lindberg, Michael J. & Valenta, Michelle M.
Object Type: Report
System: The UNT Digital Library
Atmospheric Radiation Measurement program climate research facility operations quarterly report October 1 - December 31, 2006. (open access)

Atmospheric Radiation Measurement program climate research facility operations quarterly report October 1 - December 31, 2006.

Individual raw data streams from instrumentation at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility (ACRF) fixed and mobile sites are collected and sent to the Data Management Facility (DMF) at Pacific Northwest National Laboratory (PNNL) for processing in near real time. Raw and processed data are then sent daily to the ACRF Archive, where they are made available to users. For each instrument, we calculate the ratio of the actual number of data records received daily at the Archive to the expected number of data records. The results are tabulated by (1) individual data stream, site, and month for the current year and (2) site and fiscal year dating back to 1998. Table 1 shows the accumulated maximum operation time (planned uptime), the actual hours of operation, and the variance (unplanned downtime) for the period October 1 through December 31, 2006, for the fixed and mobile sites. Although the AMF is currently up and running in Niamey, Niger, Africa, the AMF statistics are reported separately and not included in the aggregate average with the fixed sites. The first quarter comprises a total of 2,208 hours. For all fixed sites, the actual data availability (and therefore actual hours of …
Date: March 14, 2007
Creator: Sisterson, D. L.
Object Type: Report
System: The UNT Digital Library
B0 to K0K0bar and Other Hadronic b to d Decays (open access)

B0 to K0K0bar and Other Hadronic b to d Decays

The b {yields} d penguin-dominated modes B {yields} K{bar K} have been observed at the B factories. in addition, the BABAR collaboration has reported the first time-dependent CP-violation measurement in B{sup 0} {yields} K{sup 0}{bar K}{sup 0}.
Date: March 14, 2007
Creator: Biesiada, J.
Object Type: Article
System: The UNT Digital Library
B241 Facility Screening Report (SCR) (open access)

B241 Facility Screening Report (SCR)

None
Date: March 14, 2007
Creator: Johnson, M. A.
Object Type: Report
System: The UNT Digital Library
The Black Hole in the Throat - Thermodynamics of Strongly Coupled Cascading Gauge Theories (open access)

The Black Hole in the Throat - Thermodynamics of Strongly Coupled Cascading Gauge Theories

We numerically construct black hole solutions corresponding to the deconfined, chirally symmetric phase of strongly coupled cascading gauge theories at various temperatures. We compute the free energy as a function of the temperature, and we show that it becomes positive below some critical temperature, indicating the possibility of a first order phase transition at which the theory deconfines and restores the chiral symmetry.
Date: June 14, 2007
Creator: Aharony, Ofer; /Weizmann Inst. /Stanford U., ITP /SLAC; Buchel, Alex; Phys., /Western Ontario U. /Perimeter Inst. Theor.; Kerner, Patrick & U., /Western Ontario
Object Type: Report
System: The UNT Digital Library
Calculation of the Thermal Footprint of Resonant Magnetic Perturbations in DIII-D (open access)

Calculation of the Thermal Footprint of Resonant Magnetic Perturbations in DIII-D

The effect of resonant magnetic perturbations on heat transport in DIII-D H-mode plasmas has been calculated by combining the TRIP3D field-line tracing code with the E3D two-fluid transport code. Simulations show that the divertor heat flux distribution becomes non-axisymmetric because heat flux is efficiently guided to the divertor along the three-dimensional invariant manifolds of the magnetic field. Calculations demonstrate that heat flux is spread over a wider area of the divertor target, thereby reducing the peak heat flux delivered during steady-state operation. Filtered optical cameras have observed non-axisymmetric particle fluxes at the strike-point and Langmuir probes have observed non-axisymmetric floating potentials. On the other hand, the predicted magnitude of stochastic thermal transport is too large to match the pedestal plasma profiles measured by Thomson scattering and charge exchange recombination spectroscopy. The Braginskii thermal conductivity overestimates the expected heat transport in the pedestal because the mean free path is longer than estimates of the parallel thermal correlation length, and collisionless transport models are probably required for accurate description. However, even the collisionless estimates for electron thermal transport are too large by one to two orders of magnitude. Thus, it is likely that another mechanism such as rotational screening of resonant perturbations …
Date: September 14, 2007
Creator: Joseph, I; Evans, T; Moyer, R; Fenstermacher, M; Groth, M; Kasilov, S et al.
Object Type: Article
System: The UNT Digital Library
Carrying Out and Developing the Glass Industry Vision and Roadmap (open access)

Carrying Out and Developing the Glass Industry Vision and Roadmap

In support of its obligations under the above-mentioned project, the GMIC performed the following tasks: (1) Provided two-way communications liaison services between the U.S. glass industry and the D.O.E. to ensure the needs and concerns of each party are effectively communicated to the other. (2) Updated and modified on a continuing basis and in response to evolving conditions within the glass industry, the goals and priorities outlined in the Glass Industry Vision and the Glass Technology Roadmap. (3) Established relationships with a wide variety of government and non-governmental organizations with interests in further improving the levels of technology, productivity and environmental responsibility of the glass industry. (4) Canvassed the glass industry on an ongoing basis to determine overall and specific sector needs for technological development. (5) Fostered direct contacts between member companies and national laboratories to facilitate the development of individual company technology development. (6) Advised the DOE on the key elements of the solicitation process in support of the Glass Industry Vision and Technology Roadmap. In the course of this contract, the membership of the GMIC has grown to include over 70% of the glass industry. This gives it the ability to communicate persuasively with the vast majority of …
Date: June 14, 2007
Creator: Greenman, Michael
Object Type: Report
System: The UNT Digital Library
Comments on the Israeli National Data Center Reports SNRC3735 and SNRC3718 (open access)

Comments on the Israeli National Data Center Reports SNRC3735 and SNRC3718

None
Date: June 14, 2007
Creator: Nakanishi, K.
Object Type: Report
System: The UNT Digital Library
Controlling Stimulated Brillouin Backscatter with Beam Smoothing in Weakly Damped Systems (open access)

Controlling Stimulated Brillouin Backscatter with Beam Smoothing in Weakly Damped Systems

None
Date: August 14, 2007
Creator: Divol, L
Object Type: Article
System: The UNT Digital Library
CP Violation in B Decays (open access)

CP Violation in B Decays

None
Date: May 14, 2007
Creator: Biasini, M. & U., /Perugia
Object Type: Article
System: The UNT Digital Library
Demonstration of Black Liquor Gasification at Big Island (open access)

Demonstration of Black Liquor Gasification at Big Island

This Final Technical Report provides an account of the project for the demonstration of Black Liquor Gasification at Georgia-Pacific LLC's Big Island, VA facility. This report covers the period from May 5, 2000 through November 30, 2006.
Date: April 14, 2007
Creator: DeCarrera, Robert
Object Type: Report
System: The UNT Digital Library
Design and Performance of NSTX Movable GDC Probe (open access)

Design and Performance of NSTX Movable GDC Probe

The NSTX GDC system has been improved by replacing one of the two fixed anodes with a Movable GDC Probe (MGP) anode that can be inserted 1.2 m to about midway between the inner and outer vessel walls. The purpose was to provide more spatially uniform HeGDC for improving discharge stability and reliability. The MGP has been used reliably between every discharge during the last two NSTX experimental campaigns. It has also been used to apply HeGDC assisted boronization, and more recently, HeGDC assisted lithiumization. The MGP has contributed to improved NSTX performance during long pulse and H-mode discharges, and enabled a faster discharge repetition rate.
Date: June 14, 2007
Creator: Kugel, H W; Bell, M; Blanchard, W; Gates, D; Gernhardt, R; Holoman, T et al.
Object Type: Article
System: The UNT Digital Library
Design of the Beam Delivery System for the International Linear Collider (open access)

Design of the Beam Delivery System for the International Linear Collider

The beam delivery system for the linear collider focuses beams to nanometer sizes at its interaction point, collimates the beam halo to provide acceptable background in the detector and has a provision for state-of-the art beam instrumentation in order to reach the ILCs physics goals. This paper describes the design details and status of the baseline configuration considered for the reference design and also lists alternatives.
Date: August 14, 2007
Creator: Seryi, A.; Amann, J.; Arnold, R.; Asiri, F.; Bane, K.; Bellomo, P. et al.
Object Type: Article
System: The UNT Digital Library
Design of the Beam Delivery System for the International Linear Collider (open access)

Design of the Beam Delivery System for the International Linear Collider

None
Date: August 14, 2007
Creator: Seryi, A.; Amann, J.; Arnold, R.; Asiri, F.; Bane, K.; Bellomo, P. et al.
Object Type: Article
System: The UNT Digital Library
Design of the Beam Delivery System for the International Linear Collider (open access)

Design of the Beam Delivery System for the International Linear Collider

None
Date: August 14, 2007
Creator: Seryi, A.; Amann, J.; Arnold, R.; Asiri, F.; Bane, K.; Bellomo, P. et al.
Object Type: Article
System: The UNT Digital Library