3-D electromagnetic modeling of wakefields in accelerator components (open access)

3-D electromagnetic modeling of wakefields in accelerator components

We discuss the use of 3-D finite-difference time-domain (FDTD) electromagnetic codes for modeling accelerator components. Computational modeling of cylindrically symmetric structures such as induction accelerator cells has been very successful in predicting the wake potential and wake impedances of these structures, but full 3-D modeling of complex structures has been limited due to substantial computer resources required for a full 3-D model. New massively parallel 3-D time domain electromagnetic codes now under development using conforming unstructured meshes allow a substantial increase in the geometric fidelity of the structures being modeled. Development of these new codes are discussed in context of applicability to accelerator problems. Various 3-D structures are tested with an existing cubical cell FDTD code and wake impedances compared with simple analytic models for the structures; results will be used as benchmarks for testing the new time time domain codes. Structures under consideration include a stripline beam position monitor as well as circular and elliptical apertures in circular waveguides. Excellent agreement for monopole and dipole impedances with models were found for these structures below the cutoff frequency of the beam line.
Date: September 18, 1996
Creator: Poole, B.R.; Caporaso, G.J.; Ng, Wang C.; Shang, C.C. & Steich, D.
Object Type: Article
System: The UNT Digital Library
3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming (open access)

3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming

This report describes the results made in fulfillment of contract DE-FG26-00BC15190, ''3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming''. The goal of this project is to improve the recovery of oil from the Tensleep and Phosphoria Formations in Circle Ridge Oilfield, located on the Wind River Reservation in Wyoming, through an innovative integration of matrix characterization, structural reconstruction, and the characterization of the fracturing in the reservoir through the use of discrete fracture network models. Fields in which natural fractures dominate reservoir permeability, such as the Circle Ridge Field, often experience sub-optimal recovery when recovery processes are designed and implemented that do not take advantage of the fracture systems. For example, a conventional waterflood in a main structural block of the Field was implemented and later suspended due to unattractive results. It is estimated that somewhere less than 20% of the OOIP in the Circle Ridge Field have been recovered after more than 50 years' production. Marathon Oil Company identified the Circle Ridge Field as an attractive candidate for several advanced IOR processes that explicitly take advantage of the natural fracture system. These processes require …
Date: November 18, 2002
Creator: La Pointe, Paul; Hermanson, Jan; Parney, Robert; Eiben, Thorsten; Dunleavy, Mike; Steele, Ken et al.
Object Type: Report
System: The UNT Digital Library
A 4.2 GS/S Synchronized Vertical Excitation System for SPS Studies - Steps Toward Wideband Feedback (open access)

A 4.2 GS/S Synchronized Vertical Excitation System for SPS Studies - Steps Toward Wideband Feedback

None
Date: October 18, 2013
Creator: Fox, J. D.; Olsen, J.; Rivetta, C.; Rivetta, I.; Turgut, O.; Uemura, S. et al.
Object Type: Article
System: The UNT Digital Library
10-MWe solar-thermal central-receiver pilot plant: collector subsystem foundation construction. Revision No. 1 (open access)

10-MWe solar-thermal central-receiver pilot plant: collector subsystem foundation construction. Revision No. 1

Bid documents are provided for the construction of the collector subsystem foundation of the Barstow Solar Pilot Plant, including invitation to bid, bid form, representations and certifications, construction contract, and labor standards provisions of the Davis-Bacon Act. Instructions to bidders, general provisions and general conditions are included. Technical specifications are provided for the construction. (LEW)
Date: December 18, 1979
Creator: unknown
Object Type: Report
System: The UNT Digital Library
A-11 seven cluster model: FFL-10 solid core tests (open access)

A-11 seven cluster model: FFL-10 solid core tests

This report summarizes the results of the seventh and last of a series of tests completed in the A-11 test program during the Contract Year 1964
Date: December 18, 1964
Creator: Cherish, P. & Leff, G.J.
Object Type: Report
System: The UNT Digital Library
12 PWR Assembly MPC Waste Package Criticality Analysis (open access)

12 PWR Assembly MPC Waste Package Criticality Analysis

This analysis was prepared to determine the viability of the MPC PWR-12 waste package concept with respect to criticality regulatory requirements in compliance with the goals of the Waste Package Implementation Plans for conceptual design.
Date: January 18, 1996
Creator: Davis, J.
Object Type: Report
System: The UNT Digital Library
12" SODIUM FLOW CONTROLLER. PERMANENT MAGNET COUPLING. MAGNETIC CALCULATION MANUFACTURE AND TEST RESULTS (open access)

12" SODIUM FLOW CONTROLLER. PERMANENT MAGNET COUPLING. MAGNETIC CALCULATION MANUFACTURE AND TEST RESULTS

In order to retain the hermetic feature of the sodium flow controller, magnetic flux linkage of a permanent magnet coupling is used to transmit the torque produced by the operator through the pressure wall. Magnetic calculations, manufacture, and testing of this magnet coupling are described. (M.C.G.)
Date: August 18, 1961
Creator: Flator, H.E.
Object Type: Report
System: The UNT Digital Library
25 megajoule energy storage and delivery system for the Shiva laser (open access)

25 megajoule energy storage and delivery system for the Shiva laser

A 25 megajoule, 20 kV capacitive energy storage and delivery system has been built and tested for Shiva--a 20 arm, 10 kJ, 20 TW neodymium glass fusion research laser. This system supplies over 3.5 megamperes to xenon flashlamps for optical pumping of the laser amplifier. About 15% of the energy is used to establish magnetic fields within Faraday rotator glass. A digital based control and diagnostics scheme is employed through the entire pulse power system. This scheme utilizes a distributed digital data bus that addresses every element through two levels of optical isolation. The interfacing of low level digital circuitry to a pulse power environment is discussed, as well as the design and performance of the total system. Cost and manufacturing details are important in a project of this size. The projected cost goal of 27 cents/joule, installed and operating, has been met. The general approach to the design, transient analysis, manufacture, and activation of this large power conditioning system is also discussed.
Date: October 18, 1977
Creator: Gagnon, W.L.; Rupert, P. R.; Berkbigler, L.; Carder, B. M.; Gritton, D. G.; Holloway, R. W. et al.
Object Type: Article
System: The UNT Digital Library
41. DISCOVERY, SEARCH, AND COMMUNICATION OF TEXTUAL KNOWLEDGE RESOURCES IN DISTRIBUTED SYSTEMS a. Discovering and Utilizing Knowledge Sources for Metasearch Knowledge Systems (open access)

41. DISCOVERY, SEARCH, AND COMMUNICATION OF TEXTUAL KNOWLEDGE RESOURCES IN DISTRIBUTED SYSTEMS a. Discovering and Utilizing Knowledge Sources for Metasearch Knowledge Systems

Advanced Natural Language Processing Tools for Web Information Retrieval, Content Analysis, and Synthesis. The goal of this SBIR was to implement and evaluate several advanced Natural Language Processing (NLP) tools and techniques to enhance the precision and relevance of search results by analyzing and augmenting search queries and by helping to organize the search output obtained from heterogeneous databases and web pages containing textual information of interest to DOE and the scientific-technical user communities in general. The SBIR investigated 1) the incorporation of spelling checkers in search applications, 2) identification of significant phrases and concepts using a combination of linguistic and statistical techniques, and 3) enhancement of the query interface and search retrieval results through the use of semantic resources, such as thesauri. A search program with a flexible query interface was developed to search reference databases with the objective of enhancing search results from web queries or queries of specialized search systems such as DOE's Information Bridge. The DOE ETDE/INIS Joint Thesaurus was processed to create a searchable database. Term frequencies and term co-occurrences were used to enhance the web information retrieval by providing algorithmically-derived objective criteria to organize relevant documents into clusters containing significant terms. A thesaurus provides …
Date: March 18, 2008
Creator: Zamora, Antonio
Object Type: Report
System: The UNT Digital Library
45-day safety screen results and final report for Tank 241-C-203, Auger samples 95 AUG-020 and 95-AUG-021 (open access)

45-day safety screen results and final report for Tank 241-C-203, Auger samples 95 AUG-020 and 95-AUG-021

This document serves as the 45-day report deliverable for the tank C-203 auger samples collected on April 5, 1995 (samples 95-AUG-20 and 95-AUG-021). As no secondary analyses were required and no other analyses have been requested, this document also serves as the final report for C-203 auger sampling. Each sample was received, extruded, and analyzed by the 222-S Laboratories in accordance with the Tank Characterization Plan (TCP) referenced below. Included in this report are the primary safety screening results (DSC, TGA, and alpha) and density results. The worklists and raw data are included in this report. Photographs of the auger samples were taken during extrusion and, although not included in this report, are available.
Date: May 18, 1995
Creator: Conner, J.M.
Object Type: Report
System: The UNT Digital Library
100 Areas technical activities report, Engineering December 1949 (open access)

100 Areas technical activities report, Engineering December 1949

Pile Engineering reports on: metal deformation studies, status of group I metal, flow laboratory activities, boroscope inspection details, pile control details, elimination of silica feed, controlled exposure temperature for graphite samples, naval fuel test channel, strength of masonite at elevated temperatures, carbon dioxide pile temperature, H pile graphite temperature, sampling of pile graphite, special pile motion measurements, pile expansion, far side restraining clamps, vortical thimble thermocouples, and boiling studies. The Physical Chemistry Group reports on: pile annealing studies, thermal annealing studies, empty process tube temperature, X- ray line broadening, X-ray diffraction studies, the CSF program, the WSF program, and higher temperature exposures.
Date: January 18, 1950
Creator: unknown
Object Type: Report
System: The UNT Digital Library
100 areas technical activities report - engineering, May, 1948 (open access)

100 areas technical activities report - engineering, May, 1948

This report is the May, 1948, progress report from the pile engineering groups in support of the production reactors in the 100 Area of the Hanford Reservation. Included are studies of reactor slug fabrication techniques relative to blistering and corrosion, corrosion of reactor components, studies and design of graphite blocks for reactors, and reactor cover gas changes and studies.
Date: June 18, 1994
Creator: Woods, W. K.
Object Type: Report
System: The UNT Digital Library
100-B/C Target Analyte List Development for Soil (open access)

100-B/C Target Analyte List Development for Soil

This report documents the process used to identify source area target analytes in support of the 100-B/C remedial investigation/feasibility study addendum to DOE/RL-2008-46. This report also establishes the analyte exclusion criteria applicable for 100-B/C use and the analytical methods needed to analyze the target analytes.
Date: March 18, 2010
Creator: Ovink, R.W.
Object Type: Report
System: The UNT Digital Library
100-F Target Analyte List Development for Soil (open access)

100-F Target Analyte List Development for Soil

This report documents the process used to identify source area target analytes in support of the 100-F Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date: September 18, 2012
Creator: Ovink, R.
Object Type: Report
System: The UNT Digital Library
100-K Target Analyte List Development for Soil (open access)

100-K Target Analyte List Development for Soil

This report documents the process used to identify source area target analytes in support of the 100-K Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date: September 18, 2012
Creator: Ovink, R.
Object Type: Report
System: The UNT Digital Library
100-N Area Decision Unit Target Analyte List Development for Soil (open access)

100-N Area Decision Unit Target Analyte List Development for Soil

This report documents the process used to identify source area target analytes in support of the 100-N Area remedial investigation/feasibility study (RI/FS) addendum to the Integrated 100 Area Remedial Investigation/Feasibility Study Work Plan (DOE/RL-2008-46, Rev. 0).
Date: September 18, 2012
Creator: Ovink, R.
Object Type: Report
System: The UNT Digital Library
100-Picometer Interferometry for EUVL (open access)

100-Picometer Interferometry for EUVL

Future extreme ultraviolet lithography (EWL) steppers will, in all likelihood, have six-mirror projection cameras. To operate at the diffraction limit over an acceptable depth of focus each aspheric mirror will have to be fabricated with an absolute figure accuracy approaching 100 pm rms. We are currently developing visible light interferometry to meet this need based on modifications of our present phase shifting diffraction interferometry (PSDI) methodology where we achieved an absolute accuracy of 250pm. The basic PSDI approach has been further simplified, using lensless imaging based on computational diffractive back-propagation, to eliminate auxiliary optics that typically limit measurement accuracy. Small remaining error sources, related to geometric positioning, CCD camera pixel spacing and laser wavelength, have been modeled and measured. Using these results we have estimated the total system error for measuring off-axis aspheric EUVL mirrors with this new approach to interferometry.
Date: March 18, 2002
Creator: Sommargren, G. E.; Phillion, D. W.; Johnson, M. A.; Nguyen, N. O.; Barty, A.; Snell, F. J. et al.
Object Type: Article
System: The UNT Digital Library
200 Area: Dissolver off-gases (open access)

200 Area: Dissolver off-gases

None
Date: January 18, 1949
Creator: Lapple, C. E.
Object Type: Report
System: The UNT Digital Library
200 Area Treated Effluent Disposal Facility (TEDF) Effluent Sampling and Analysis Plan (open access)

200 Area Treated Effluent Disposal Facility (TEDF) Effluent Sampling and Analysis Plan

This Sampling and Analysis Plan (SAP) has been developed to comply with effluent monitoring requirements at the 200 Area Treated Effluent Disposal Facility (TEDF), as stated in Washington State Waste Discharge Permit No. ST 4502 (Ecology 2000). This permit, issued by the Washington State Department of Ecology (Ecology) under the authority of Chapter 90.48 Revised Code of Washington (RCW) and Washington Administrative Code (WAC) Chapter 173-216, is an April 2000 renewal of the original permit issued on April 1995.
Date: May 18, 2000
Creator: Brown, M. J.
Object Type: Report
System: The UNT Digital Library
234-5 Project, Hydrofluorination Cycle (open access)

234-5 Project, Hydrofluorination Cycle

None
Date: December 18, 1947
Creator: Prudich, T.
Object Type: Report
System: The UNT Digital Library
241-BY-106 sampling test plan (open access)

241-BY-106 sampling test plan

This plan outlines the approach to be taken on obtaining the second core from 241-BY-106, riser 10B, using the Rotary Mode Core Sample Truck (RMCST). The purpose for obtaining the second core is to retrieve the final segments to determine ferrocyanide content. The first core acquired from riser 10B resulted in inadequate sample recovery for the labs to perform the required analysis. Thirteen samples were taken, with recovery varying from 0 to 100%. The most likely contributors to poor sample recovery have been identified and explained on a sample-by sample basis as outlined in this report. This information has been used to devise the approach to be taken in obtaining the second core.
Date: January 18, 1995
Creator: Bogen, G. J.
Object Type: Report
System: The UNT Digital Library
105K West Isolation Barrier Acceptance Test results (open access)

105K West Isolation Barrier Acceptance Test results

The objective of this document is to report and interpret the findings of the isolation barrier acceptance tests performed in 105KW/100K. The tests were performed in accordance with the test plan and acceptance test procedure. The test report contains the test data. This document compares the test data against the criteria. A discussion of the leak rate analytical characterization describes how the flow characteristics flow rate will be determined using the test data from the test report. Two modes of water loss were considered; basin and/or discharge chute leakage, and evaporation. An initial test established baseline leakage data and instrumentation performance. Test 2 evaluated the sealing performance of the isolation barrier by inducing an 11 in. (27.9 cm) level differential across the barrier. The leak rate at this 11 in. (27.9 cm) level is extrapolated to the 16 ft. (4.9 m) level differential postulated in the DBE post seismic event. If the leak rate, adjusted for evaporation and basin leakage (determined from Test 1), is less than the SAR limit of 1,500 gph (5,680 lph) at a 16 ft (4.9 m) level differential, the barriers pass the acceptance test.
Date: May 18, 1995
Creator: McCracken, K. J. & Irwin, J. J.
Object Type: Report
System: The UNT Digital Library
11th International Conference of Radiation Research (open access)

11th International Conference of Radiation Research

Topics discussed in the conference included the following: Radiation Physics, Radiation Chemistry and modelling--Radiation physics and dosimetry; Electron transfer in biological media; Radiation chemistry; Biophysical and biochemical modelling; Mechanisms of DNA damage; Assays of DNA damage; Energy deposition in micro volumes; Photo-effects; Special techniques and technologies; Oxidative damage. Molecular and cellular effects-- Photobiology; Cell cycle effects; DNA damage: Strand breaks; DNA damage: Bases; DNA damage Non-targeted; DNA damage: other; Chromosome aberrations: clonal; Chromosomal aberrations: non-clonal; Interactions: Heat/Radiation/Drugs; Biochemical effects; Protein expression; Gene induction; Co-operative effects; ``Bystander'' effects; Oxidative stress effects; Recovery from radiation damage. DNA damage and repair -- DNA repair genes; DNA repair deficient diseases; DNA repair enzymology; Epigenetic effects on repair; and Ataxia and ATM.
Date: July 18, 1999
Creator: unknown
Object Type: Article
System: The UNT Digital Library
(The 1990 run of the WA80 experiment) (open access)

(The 1990 run of the WA80 experiment)

The traveler spent six weeks at CERN participating in the 1990 run of the WA80 experiment. The traveler concentrated on trigger electronics for the first two weeks and on operation of the experiment for much of the next four. New electronics designed at ORNL for reading out the new BGO spectrometer were tested with the BGO in beam. Improvements were made, in collaboration with the ORNL engineers who designed the electronics. Plans were made for constructing the electronics in large quantities. Conversations were had with other members of WA80 about the analysis of results from this year's run and our plans for the 1991/1992 runs proposed for CERN. Lengthy conversations were had about the draft of a first paper concerning limits on direct photon production. Finally, the traveler attended an all-day session of the dilepton working group chartered to consider dilepton and photon experiments using heavy-ion beams in CERN's to-be-proposed Large Hadron Collider (LHC). At this meeting the traveler presented recent results from the group working on such a proposal for RHIC and updated his earlier presentation of June 1990 in this working group.
Date: September 18, 1990
Creator: Young, G. R.
Object Type: Report
System: The UNT Digital Library