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Spoke cavity power coupler conceptual design work for the HEL-JTO beam exp.

Description: The objective of this report was to create a low-cost, modest-power RF coupler for a SRF spoke cavity beam test of electrons test to be done at LANL. Developing the design for this magnetically-coupled SRF spoke cavity testing coupler was basically straightforward since the cavity coupling port needed to be one of the 1.22-inch ID ports, and the power level was limited by the available RF to less than 400 W TW power. In addition, the coupler would be immersed in bath cryostat filled with liquid… more
Date: October 9, 2007
Creator: Rusnak, B
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering study of tank leaks related to hydraulic retrieval of sludge from tank 241-C-106. Revision 1

Description: This study evaluates hydraulic retrieval (sluicing) of the waste in single-shell tank 241-C-106 with respect to the likelihood of tank leaks, gross volumes of potential leaks, and their consequences. A description of hydraulic retrieval is developed to establish a baseline for the study. Leak models are developed based on postulated leak mechanisms to estimate the amount of waste that could potentially leak while sluicing. Transport models describe the movement of the waste constituents in the … more
Date: June 9, 1993
Creator: Lowe, S. S.; Carlos, W. C.; Irwin, J. J.; Khaleel, R.; Kline, N. W.; Ludowise, J. D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report Spacially-Resolved Diagnostics and Modeling of Micro-Discharges

Description: Optical emission spectroscopy measurements were performed with added trace probe gases in an atmospheric pressure direct current (DC) helium microplasma. Spatially resolved measurements (resolution {approx} 6 {micro}m) were taken across a 200 {micro}m slot-type discharge. Stark splitting of the hydrogen Balmer-line was used to investigate the electric field distribution in the cathode sheath region. Electron densities were evaluated from the analysis of the spectral line broadenings of H-{beta}… more
Date: August 9, 2012
Creator: Donnelly, Vincent M. & Economou, Demetre J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of Niobium-Uranium Alloys for Elevated-Temperature Fuel Applications

Description: As a continuation of studies reported in BMI-1400, fabrication characteristics, physical and mechanical properties, and corrosion behavior in NaK, sodium, and water of niobium--uranium binary alloys containing up to 60 wt.% uranium were investigated. Alloys were cast by a skull melting and consumable and nonconsumable arc-melting methods. Fabrication difficulties with alloys containing greater than 25 wt.% uranium were related to coring-type microsegregation during casting. Tensile tests indica… more
Date: August 9, 1961
Creator: DeMastry, John A.; Moak, Donald P.; Epstein, Seymour G.; Bauer, Arthur A. & Dickerson, Ronnald F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laboratory Directed Research and Development (LDRD) on Mono-uranium Nitride Fuel Development for SSTAR and Space Applications

Description: The US National Energy Policy of 2001 advocated the development of advanced fuel and fuel cycle technologies that are cleaner, more efficient, less waste-intensive, and more proliferation resistant. The need for advanced fuel development is emphasized in on-going DOE-supported programs, e.g., Global Nuclear Energy Initiative (GNEI), Advanced Fuel Cycle Initiative (AFCI), and GEN-IV Technology Development. The Directorates of Energy & Environment (E&E) and Chemistry & Material Sciences (C&am… more
Date: February 9, 2006
Creator: Choi, J.; Ebbinghaus, B.; Meiers, T. & Ahn, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Finite Element Modeling of a Microhotplate for Microfluidic Applications

Description: A hand-held chemical laboratory ({mu}ChemLab) is being developed that utilizes a silicon- nitride-supported microhotplate in the front-end, gas sampling and preconcentration stage. Device constraints include low-power (<200mW at 5V), rapid heating (<20msec), and a relatively uniform temperature distribution throughout the heated area ({approximately}3mm{sup 2}). To optimize for these criteria, the electro-thermal behavior of the microhotplate was modeled using Thermal Analysis System (TAS… more
Date: March 9, 1999
Creator: Benson, D. A.; Frye-Mason, G. C.; Manginell, R. P. & Rosato, D. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mega-joule experiment area study, 1989

Description: This document contains Chapters 3 and 4 from the Mega-Joule Experiment Area Study, 1989. Water frost on the first containment wall is studied in detail in Chapter 3. Considered topics are the computer modeling of frost ablation and shock propagation and the experimental characterization of water frost. The latter is broken down into: frost crystal morphology, experiment configuration, growth rate results, density results, thermal conductivity, crush strength of frost, frost integrity, frost res… more
Date: March 9, 1995
Creator: Slaughter, D.; Oirth, C. & Woodworth, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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