878 Matching Results

Search Results

Advanced search parameters have been applied.

Decontamination of an Analytical Laboratory Hot Cell Facility

Description: An Analytical Laboratory Hot Cell Facility at Argonne National Laboratory-West (ANL-W) had been in service for nearly thirty years. In order to comply with current DOE regulations governing such facilities and meet programmatic requirements, a major refurbishment effort was mandated. Due to the high levels of radiation and contamination within the cells, a decontamination effort was necessary to provide an environment that permitted workers to enter the cells to perform refurbishment activities without receiving high doses of radiation and to minimize the potential for the spread of contamination. State-of-the-art decontamination methods, as well as time-proven methods were utilized to minimize personnel exposure as well as maximize results.
Date: November 1, 1995
Creator: Michelbacher, J.A.; Henslee, S.P.; Rosenberg, K.E. & Coleman, R.M.
Partner: UNT Libraries Government Documents Department

The restoration of an Argonne National Laboratory foundry

Description: The Environmental Management Operations` Waste Management Department (WMD) at Argonne National Laboratory-East (ANL-E) undertook the restoration of an unused foundry with the goal of restoring the area for general use. The foundry was used in the fabrication of reactor components for ANL`s research and development programs; many of the items fabricated in the facility were radioactive, thereby contaminating the foundry equipment. This paper very briefly describes the dismantling and decontamination of the facility. The major challenges associated with the safe removal of the foundry equipment included the sheer size of the equipment, a limited overhead crane capability (4.5 tonne), the minimization of radioactive and hazardous wastes, and the cost-effective completion of the project, the hazardous and radioactive wastes present, and limited process knowledge (the facility was unused for many years).
Date: September 1, 1997
Creator: Shearer, T.; Pancake, D. & Shelton, B.
Partner: UNT Libraries Government Documents Department

The evolution of ANL CMT gloveboxes

Description: This report summarizes the following topics: the design approach based upon user-friendly concepts; utilization of existing component designs; cost effectiveness; schedule; and adaptable to project process changes without losing overall effectiveness of user-friendly approach.
Date: July 6, 2000
Creator: Malecha, R. F.; Frigo, A. A. & Preuss, D. E.
Partner: UNT Libraries Government Documents Department

Developing tiled projection display systems

Description: Tiled displays are an emerging technology for constructing high-resolution semi-immersive visualization environments capable of presenting high-resolution images from scientific simulation [EVL, PowerWall]. In this way, they complement other technologies such as the CAVE [Cruz-Niera92] or ImmersaDesk, [Czernuszenko97], which by design give up pure resolution in favor of width of view and stereo. However, the largest impact may well be in using large-format tiled displays as one of possibly multiple displays in building ''information'' or ''active'' spaces that surround the user with diverse ways of interacting with data and multimedia information flows [IPSI, Childers00, Raskar98, ROME, Stanford, UNC]. These environments may prove to be the ultimate successor of the desktop metaphor for information technology work.
Date: June 8, 2000
Creator: Hereld, M.; Judson, I. R.; Paris, J. & Stevens, R. L.
Partner: UNT Libraries Government Documents Department

Physics Division annual report 2002.

Description: This report highlights the research performed in 2002 in the Physics Division of Argonne National Laboratory. The Division's programs include operation of ATLAS as a national user facility, nuclear structure and reaction research, nuclear theory, medium energy nuclear research and accelerator research and development.
Date: September 8, 2003
Creator: Thayer, K. J.
Partner: UNT Libraries Government Documents Department

Stodolsky's theorem and neutrino oscillation phases-for pedestrians.

Description: Neutrino oscillations are experimentally observable only as a result of interference between neutrino states with different masses and the same energy. All interference effects between neutrino states having different energies are destroyed by the interaction between the incident neutrino and the neutrino detector. Erroneous results are frequently obtained by neglecting the neutrino-detector interactions.
Date: February 19, 2003
Creator: Lipkin, H. J.
Partner: UNT Libraries Government Documents Department

High Energy Physics Division semiannual report of research activities, January 1, 2002 - June 30, 2002.

Description: This report describes the research conducted in the High Energy Physics Division of Argonne National Laboratory during the period of January 1 through June 30, 2002. Topics covered here include experimental and theoretical particle physics, advanced accelerator physics, detector development, and experimental facilities research. Lists of Division publications and colloquia are included.
Date: January 31, 2003
Creator: Spinka, H. M.; Nodulman, L. J.; Goodman, M. C.; Repond, J.; Cadman, R.; Ayres, D. S. et al.
Partner: UNT Libraries Government Documents Department

Runtime checking of datatype signatures in MPI

Description: The MPI standard provides a way to send and receive complex combinations of datatypes (e.g., integers and doubles) with a single communication operation. The MPI standard specifies that the type signature, that is, the basic datatypes (language-defined types such as int or DOUBLE PRECISION), must match in communication operations such as send/receive or broadcast. Because datatypes may be defined by the user in MPI, there is a limitless collection of possible type signatures. Detecting the programmer error of mismatched datatypes is difficult in this case; detecting all errors essentially requires sending a complete description of the type signature with a message. This paper discusses an alternative: send the value of a function of the type signature so that (a) identical type signatures always give the same function value, (b) different type signatures often give different values, and (c) common cases (e.g., predefined datatypes) are handled exactly. Thus, erroneous programs are often (but not always) detected; correct programs never are flagged as erroneous. The method described is relatively inexpensive to compute and uses a small (and fixed, independent of the complexity of the datatype) amount of space in the message envelope.
Date: June 19, 2000
Creator: Gropp, W. D.
Partner: UNT Libraries Government Documents Department

Analysis of Data from a Downhole Oil/Water Separator Field Trial in East Texas

Description: Downhole oil/water separator (DOWS) technology is available to separate oil from produced water at the bottom of an oil well. Produced water can be injected directly to a disposal formation rather than lifting it to the surface, treating it there, and reinjecting it. Because of a lack of detailed performance data on DOWS systems, the U.S. Department of Energy (DOE) provided funding to secure DOWS performance data. A large U.S. oil and gas operator offered to share its data with Argonne National Laboratory. This report summarizes data from the DOWS installation in eastern Texas.
Date: April 19, 2001
Creator: Veil, John A. & Layne, Arthur Langhus
Partner: UNT Libraries Government Documents Department

Statistical on-chip interconnect modeling : an application of automatic differentiation.

Description: Automatic differentiation is a technique for computing derivatives accurately and efficiently with minimal human effort. We employed this technique to generate derivative information of FCAP2 (2-D) and FCAP3 (3-D) programs that simulate the parasitic effects of interconnects and devices. This derivative information is used in the statistical modeling of worst-case interconnect delays and on-chip crosstalks. The ADIC (Automatic Differentiation in C) tool generated new versions of FCAP2 and FCAP3 programs that compute both the original results and the derivative information. Given the ANSI C source code for the function, ADIC generates new code that computes derivatives of the model output with respect to the input parameters. We report on the use of automatic differentiation and divided difference approaches for computing derivatives for FCAP3 programs. The results show that ADIC-generated code computes derivatives more accurately, more robustly, and faster than the divided difference approach.
Date: September 28, 1998
Creator: Bischof, C.; Roh, L.; Chang, N.; Lee, K.; Kanevsky, V.; Nakagawa, O. S. et al.
Partner: UNT Libraries Government Documents Department