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Development of An On-Line, Core Power Distribution Monitoring System

Description: The objective of the proposed work was to develop a software package that can construct in three-dimensional core power distributions using the signals from constant temperature power sensors distributed in the reactor core. The software developed uses a mode-based state/parameter estmation technique that is particularly attractive when there are model uncertainties and/or large signal noise. The software yields the expected value of local power at the detector locations and points in between, … more
Date: October 2, 2007
Creator: ALdemir, Tunc; Miller, Don & Wang, Peng
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE FUTURE OF SPIN PHYSICS AT BNL.

Description: The Relativistic Heavy Ion Collider (RHIC) at BNL is the world's only polarized proton-proton collider. Collisions at center-of-mass energies up to 500 GeV and beam polarizations approaching 70% (longitudinal or transverse) are provided to two experiments, STAR and PHENIX, at luminosities {ge} 10{sup 32}/cm{sup 2}/sec. Transverse polarized beam has also been provided to the BRAHMS experiment. Measurements that bear on the important question of the spin content of the nucleon are beginning to ap… more
Date: October 2, 2006
Creator: ARONSON, S. & DESHPANDE, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement of Transverse Single-Spin Asymmetries for Di-JetProduction in Proton-Proton Collisions at sqrt s = 200 GeV

Description: We report the first measurement of the opening angledistribution between pairs of jets produced in high-energy collisions oftransversely polarized protons. The measurement probes (Sivers)correlations between the transverse spin orientation of a proton and thetransverse momentum directions of its partons. With both beams polarized,the wide pseudorapidity (-1 leq eta leq +2) coverage for jets permitsseparation of Sivers functions for the valence and sea regions. Theresulting asymmetries are all c… more
Date: October 2, 2007
Creator: Abelev, B. I.; Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on Angular Scales of 10' to 5 Degrees

Description: We present a map and an angular power spectrum of the anisotropy of the cosmic microwave background (CMB) from the first flight of MAXIMA. MAXIMA is a balloon-borne experiment with an array of 16 bolometric photometers operated at 100 mK. MAXIMA observed a 124 deg region of the sky with 10' resolution at frequencies of 150, 240 and 410 GHz. The data were calibrated using in-flight measurements of the CMB dipole anisotropy. A map of the CMB anisotropy was produced from three 150 and one 240 GHz … more
Date: October 2, 2000
Creator: Ade, P.; Balbi, A.; Bock, J.; Borrill, J.; Boscaleri, A.; deBernardis, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application of a Device for Uniform Web Drying and Preheating Using Microwave Energy

Description: The project summarized in this report dealt with an evaluation of new microwave applicator ideas for paper preheating and drying. The technical basis for success in this project is the fact that Industrial Microwave Systems has recently identified certain previously unrecognized wave guide ''design variables'' and hardware implementation concepts that can be employed to greatly improve the uniformity of microwave energy distribution for continuous flow processes. Two applicator concepts were ul… more
Date: October 2, 2003
Creator: Ahrens, Frederick W.; Habeger, C.; Loughran, J. & Patterson, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ion flux from vacuum arc cathode spots in the absence and presence of a magnetic field

Description: Because plasma production at vacuum cathode spots is approximately proportional to the arc current, arc current modulation can be used to generate ion current modulation that can be detected far from the spot using a negatively biased ion collector. The drift time to the ion detector can used to determine kinetic ion energies. A very wide range of cathode materials have been used. It has been found that the kinetic ion energy is higher at the beginning of each discharge and approximately consta… more
Date: October 2, 2001
Creator: Anders, Andre & Yushkov, George Yu.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Duct Retrofit Strategy to Complement a Modulating Furnace.

Description: Some recent work (Walker 2001, Andrews 2002) has indicated that installing a modulating furnace in a conventional duct system may, in many cases, result in a significant degradation in thermal distribution efficiency. The fundamental mechanism was pointed out nearly two decades ago (Andrews and Krajewski 1985). The problem occurs in duct systems that are less-than-perfectly insulated (e.g., R-4 duct wrap) and are located outside the conditioned space. It stems from the fact that when the airflo… more
Date: October 2, 2002
Creator: Andrews, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stand-alone microprobe at Livermore

Description: Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories/California have jointly constructed a new stand-alone microprobe facility. Although the facility was built to develop a method to rapidly locate and determine elemental concentrations of micron scale particulates on various media using PIXE, the facility has found numerous applications in biology and materials science. The facility is located at LLNL and uses a General Ionex Corporation Model 358 duoplasmatron negati… more
Date: October 2, 1998
Creator: Antolak, A. J.; Bench, G. S.; Brown, T. A.; Frantz, B. R.; Grant, P. G.; Morse, D. H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Genetically Remote Pathogenic Strain NVH391-98 of the Bacillus cereus Group Represents the Cluster of Thermophilic Strains

Description: Bacteria of the Bacillus cereus group are known to cause food poisoning. A rare phylogenetically remote strain, NVH391-98, was recently characterized to encode a particularly efficient cytotoxin K presumably responsible for food poisoning. This pathogenic strain and its close relatives can be phenotypically distinguished from other strains of the B. cereus group by the inability to grow at temperatures below 17 degrees C and by the ability to grow at temperatures from 48 to 53 degrees C. A temp… more
Date: October 2, 2007
Creator: Auger, Sandrine; Galleron, Nathalie; Bidnenko, Elena; Ehrlich, S. Dusko; Lapidus, Alla & Sorokin, Alexei
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lawrence Livermore Laboratory Geothermal Energy Program. A Status Report on the Development of the Total-Flow Concept

Description: The technology development activities of the Geothermal Energy Program at the Lawrence Livermore Laboratory are summarized. Significant progress toward development of the Total-Flow concept was made during FY 1978. The results show that the original goal of 70% engine efficiency for the Total-Flow impulse turbine is achievable, that a Total-Flow system is competitive economically with conventional systems, and that the Total-Flow concept offers the benefit of more efficient utilization of geoth… more
Date: October 2, 1978
Creator: Austin, A. L. & Lundberg, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A risk management approach to nuclear waste inventory versus storage capacity

Description: Nuclear waste is presently stored in 177 underground storage tanks at -the U. S. Department of Energy`s Hanford Site in Washington State. The storage tanks are of two construction types, 149 single-shell tanks (SSTS) and 28 double-shell tanks (DSTs). No waste has been added to the SSTs since 1980. However, the DSTs are configured to receive additional waste from site waste generators. The overall waste inventory is time dependent and strongly influenced by present and future tank farm operation… more
Date: October 2, 1996
Creator: Awadalla, N.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Combustion Model for the TWA 800 Center-Wing Fuel Tank Explosion

Description: In support of the National Transportation Safety Board investigation of the TWA Flight 800 accident, a combined experimental/computational effort was conducted that focused on quarter-scale testing and simulation of the fuel-air explosion in the Boeing 747 center wing fuel tank. This report summarizes the modeling approach used at Sandia National Laboratories. In this approach approximations are introduced that capture the essential physics associated with turbulent flame propagation in multipl… more
Date: October 2, 1998
Creator: Baer, M.R. & Gross, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ACCELERATING POLARIZED PROTONS TO HIGH ENERGY.

Description: The Relativistic Heavy Ion Collider (RHIC) is designed to provide collisions of high energy polarized protons for the quest of understanding the proton spin structure. Polarized proton collisions at a beam energy of 100 GeV have been achieved in RHIC since 2001. Recently, polarized proton beam was accelerated to 250 GeV in RHIC for the first time. Unlike accelerating unpolarized protons, the challenge for achieving high energy polarized protons is to fight the various mechanisms in an accelerat… more
Date: October 2, 2006
Creator: Bai, M.; Ahrens, L.; Alekseev, I. G.; Alessi, J.; Beebe-Wang, J.; Blaskiewicz, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Level-2 Milestone 2351: Terascale Simulation Facility Upgrade

Description: This report documents the LLNL TSF upgrade ASC L2 milestone 2351: Terascale Simulation Facility upgrade, due Sept. 30, 2007. The full text of the milestone is included in Attachment 1. The stated goal of the milestone was: 'Complete a 3-MW expansion of electrical power for computing systems in the east computer room of the Terascale Simulation Facility (TSF) and complete the final connection of all air handlers that were delivered as part of the TSF line item'. In this report we detail the upgr… more
Date: October 2, 2007
Creator: Bailey, A M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste Analysis Plan for the 200 Area Effluent Treatment Facility and Liquid Effluent Retention Facility

Description: This waste analysis plan (WAP) has been prepared for startup of the 200 Area Effluent Treatment Facility (ETF) and operation of the Liquid Effluent Retention Facility (LERF), which are located on the Hanford Facility, Richland, Washington. This WAP documents the methods used to obtain and analyze representative samples of dangerous waste managed in these units, and of the nondangerous treated effluent that is discharged to the State-Approved Land Disposal System (SALDS). Groundwater Monitoring … more
Date: October 2, 1995
Creator: Ballantyne, N. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Time behavior of a critical reactor pulsed with a large square wave source

Description: In a previous Naval Application memorandum, a discussion was given of what happens to the power level of a reactor when an instantaneous, very large neutron source is introduced. The motivation for the problem arises from the question of what happens when a nuclear bomb is detonated near a reactor powered missile. This present memorandum looks at the same problem as that which is discussed in the previous memorandum but in slightly more detail. The results obtained are essentially the same as t… more
Date: October 2, 1962
Creator: Barnett, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report of the Census Task Force on beamline control system requirements

Description: A special task force was appointed to study the experience with the present beamline control system at Fermilab and to make recommendations in this area. The charge of the committee and the list of its members are appended. In order to carry out its assignment, the committee conducted a series of meetings in which it discussed the controls situation in general and the best way to approach the user community. The various groups of users were identified, and a letter was written to representative… more
Date: October 2, 1986
Creator: Barsotti, E. J.; Bartlett, J. F.; Bogert, V. D.; Borcherding, F. O.; Butler, J.; Czarapata, P. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multilayer Defects Nucleated by Substrate Pits: A Comparison of Actinic Inspection and Non-Actinic Inspection Techniques

Description: The production of defect-free mask blanks remains a key challenge for EUV lithography. Mask-blank inspection tools must be able to accurately detect all critical defects while simultaneously having the minimum possible false-positive detection rate. We have recently observed and here report the identification of bump-type buried substrate defects, that were below the detection limit of a non-actinic (i.e. non-EUV) in inspection tool. Presently, the occurrence inspection of pit-type defects, the… more
Date: October 2, 2006
Creator: Barty, A.; Goldberg, K.; Kearney, P.; Rekawa, S.; LaFontaine, B.; Wood, O. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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