ASCI Program 4Q FY99-Quarterly Progress Report Unclassified Projects (open access)

ASCI Program 4Q FY99-Quarterly Progress Report Unclassified Projects

PSE is made up of four technical areas, ASCI Simulation Development Environment (ASDE), Data Exploration and Management (DEM), Data Transfer and Storage (DTS), and Distributed Systems (DS). The goal of ASDE is to create a truly scalable simulation development environment across ASCI platforms. Specific objectives are to improve the environment to accelerate application development, to improve reliability of codes, and to enable better scalable performance. DEM's effort is to provide an interactive environment for efficiently and visualizing massive amounts of data. WE are working to help scientists spend more time concentrating on data understanding by providing tools that both enhance interactions and minimize unnecessary manipulations of data. The goal of DTS is to provide multiple gigabytes/sec parallel data transfer, multiple petabytes of archival mass storage, and new architectures for ''end-to-end'' I/O all helping to ensure the highest utilization of ASCI resources. DS consists of secure networking, secure distributed computing, and resource management for ASCI platforms. These three research and development activities are fundamental to the creation of the basic infrastructure for the ASCI computing environment.
Date: November 1, 1999
Creator: Pierce, R. & Christensen, R.
System: The UNT Digital Library
RF cavity R&D at LBNL for the NLC damping rings, FY1999 (open access)

RF cavity R&D at LBNL for the NLC damping rings, FY1999

This report contains a summary of the R&D activities at LBNL on RF cavities for the NLC damping rings during fiscal year19999. These activities include the optimization of the RF design for both efficiency and damping of higher-order (HOMs), by systematic study of the cavity profile, the effect of the beam pipe diameter, nosecone angle and gap, the cross section and position of the HOM damping waveguides and the coupler. The effect of the shape of the HOM waveguides and their intersection with the cavity wall on the local surface heating is also an important factor, since it determines the highest stresses in the cavity body. This was taken into account during the optimization so that the stresses could be reduced at the same time as the HOP damping was improved over previous designs. A new method of calculating the RF heating was employed, using a recently released high frequency electromagnetic element in ANSYS. This greatly facilitates the thermal and stress analysis of the design and fabrication methods have been developed with the goals of lower stresses, fewer parts and simpler assembly compared to previous designs. This should result in substantial cost savings. Preliminary designs are described for the cavity …
Date: November 1, 1999
Creator: Rimmer, R.A.; Corlett, J.N.; Koehler, G.; Li, D.; Hartman, N.; Rasson, J. et al.
System: The UNT Digital Library
Texas Human Rights Foundation, Inc. Financial Statements: 1999 and 1998 (open access)

Texas Human Rights Foundation, Inc. Financial Statements: 1999 and 1998

Financial statements from Texas Human Rights Foundation, Inc. documenting assets, expenditures, and other financial information for fiscal years 1999 and 1998.
Date: November 19, 1999
Creator: Texas Human Rights Foundation, Inc.
System: The Portal to Texas History
Texas Human Rights Foundation, Inc. Financial Statements: 1999 and 1998 (open access)

Texas Human Rights Foundation, Inc. Financial Statements: 1999 and 1998

Financial statements from Texas Human Rights Foundation, Inc. documenting assets, expenditures, and other financial information for fiscal years 1999 and 1998.
Date: November 19, 1999
Creator: Texas Human Rights Foundation, Inc.
System: The Portal to Texas History