224 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Performance"  
Results: 1 - 24 next
open access

Nuclear design of fast hybrid blankets

Description: The objective of this presentation is to: (1) present the physical motivation for fusion-fission hybrids, (2) outline design considerations for hybrid blankets, and (3) discuss the nuclear performance potential of hybrid blankets.
Date: January 23, 1978
Creator: Lee, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Vapor Containment in the Oak Ridge Research Reactor

Description: Containment of the ORR is attained by means of a ventilation system which is capable of exhausting air from the building at a rate sufficient to ensure that all leakage of air at ground level is into the building. The exhaust air is treated by scrubbing and filtration and is discharged from a large stack at a height and velocity sufficient to guarantee that meteorological dispersion will reduce the resulting concentration of radioactive material to an acceptable level. Factors involved in selec… more
Date: August 23, 1962
Creator: Binford, F.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Problems Encountered During Four Years of ORR Operation

Description: The over-all design and operation of ORR is reviewed in the light of four years of operating experience. Items discussed consist of the reactor components and instrumentation, reactor and pool cooling systems (including system cleanup), the emergency systems for electric power and reactor cooling, the waste-disposal systems (liquid, gaseous, and solid), and the building, itself. The ORR was the first of a class of reactors which combined the features of both the pool-reactor and tank-reactor ty… more
Date: August 23, 1962
Creator: Tabor, W.H. & Costner, R.A. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: February 23, 1987
Creator: Jha, M. C. & Baltich, L. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Data report for the Southwest Residential Experiment Station, January 1982

Description: Physical performance data obtained from the photovoltaic energy systems under test at the Southwest Residential Experiment Station in Las Cruces, New Mexico are tabulated and graphed for the month of January, 1982. Data drawn from the Residential Data System (RDS) appears in several formats. A one-page summary is provided as well as a more detailed hour-by-hour tabulation for an average day of the month. Energy histograms are provided, based on RDS data and recording kilowatt hour meters. The h… more
Date: February 23, 1982
Creator: Lieberman, M.; Hai, O. Y.; Hocking, G. & Whitaker, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NOVANET: communications network for a control system

Description: NOVANET is a control system oriented fiber optic local area network that was designed to meet the unique and often conflicting requirements of the Nova laser control system which will begin operation in 1984. The computers and data acquisition devices that form the distributed control system for a large laser fusion research facility need reliable, high speed communications. Both control/status messages and experimental data must be handled. A subset of NOVANET is currently operating on the two… more
Date: May 23, 1983
Creator: Hill, J.R.; Severyn, J.R. & VanArsdall, P.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ENHANCED DOE HIGH LEVEL WASTE MELTER THROUGHPUT STUDIES: SRNL GLASS SELECTION STRATEGY

Description: The Department of Energy has authorized a team of glass formulation and processing experts at the Savannah River National Laboratory (SRNL), the Pacific Northwest National Laboratory (PNNL), and the Vitreous State Laboratory (VSL) at Catholic University of America to develop a systematic approach to increase high level waste melter throughput (by increasing waste loading with minimal or positive impacts on melt rate). This task is aimed at proof-of-principle testing and the development of tools… more
Date: January 23, 2008
Creator: Raszewski, F; Tommy Edwards, T & David Peeler, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Setup and performance of RHIC for the 2008 run with deuteron-gold collisions.

Description: This year (2008) deuterons and gold ions were collided in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) for the first time since 2003. The setup and performance of the collider for the 2008 run is reviewed with a focus on improvements that have led to an order of magnitude increase in luminosity over that achieved in the 2003 run.
Date: June 23, 2008
Creator: Gardner,C.; Abreu, N.P.; Ahren, L.; Alessi, J.; Bai, M. & al., et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

RHIC polarized proton performance in run-8.

Description: During Run-8, the Relativistic Heavy Ion Collider (RHIC) provided collisions of spin-polarized proton beams at two interaction regions. Helical spin rotators at these two interaction regions were used to control the spin orientation of both beams at the collision points. Physics data were taken with different orientations of the beam polarization. We present recent developments and improvements as well as the luminosity and polarization performance achieved during Run-8.
Date: June 23, 2008
Creator: Montag, C.; Abreu, N.; Ahrens, L.; Bai, M.; Barton, D. & al., et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

RHIC and its upgrade programmes.

Description: As the first hadron accelerator and collider consisting of two independent superconducting rings RHIC has operated with a wide range of beam energies and particle species. After a brief review of the achieved performance the presentation will give an overview of the plans, challenges and status of machine upgrades, that range from a new heavy ion pre-injector and beam cooling at 100 GeV to a high luminosity electron-ion collider.
Date: June 23, 2008
Creator: Roser, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Operational experience with a near-integer working point at RHIC.

Description: During the RHIC polarized proton run in N 2006 it became evident that the luminosity performance is limited by the beam-beam effect. With a working point between 213 and 7/10, and the necessity to mirror the tunes of the two RHIC rings at the diagonal, the beam with a horizontal tune closest to 213 showed poor lifetime. To overcome this limitation, a near-integer working point has been proposed. Tracking studies performed at both working points showed a larger dynamic aperture near the integer … more
Date: June 23, 2008
Creator: Montag, C.; Bai, M.; Beebe-Wang, J.; FischW; Luo, Y.; Malitsky, N. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Integrated Global Orbit Feedback with Slow and Fast Correctors

Description: The NSLS-II Light Source, which is planned to be built at Brookhaven National Laboratory, provides users with ultra-bright synchrotron radiation sources and is designed for horizontal beam emittances < 1 nm. Full utilization of the very small emittances and beam sizes requires sub-micron orbit stability in the storage ring. This can be provided by means of a wide bandwidth orbit feedback system. Traditional approach is to utilize a uniform set of fast correctors or use two separate systems w… more
Date: June 23, 2008
Creator: Pinayev,I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experience with IBS-suppression lattice in RHIC

Description: An intra-beam scattering (IBS) is the limiting factor of the luminosity lifetime for RHIC operating with heavy ions. In order to suppress the IBS we designed and implemented new lattice with higher betatron tunes. This lattice had been developed during last three years and had been used for gold ions in yellow ring of the RHIC during d-Au part of the RHIC Run-8. The use of this lattice allowed both significant increases in the luminosity lifetime and the luminosity levels via reduction of beta-… more
Date: June 23, 2008
Creator: Litvinenko,V. N.; Luo, Y.; Ptitsyn, V.; Satogata, T.; Tepikian, S.; Bai, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Large File System Backup: NERSC Global File System Experience

Description: NERSC's Global File system (NGF), accessible from all compute systems at NERSC, holds files and data from many scientific projects. A full backup of this file system to our High Performance Storage System (HPSS) is performed periodically. Disk storage usage by projects at NERSC has grown seven fold over a two year period, from ~;;20TB in June 2006 to ~;;140 TB in June 2008. The latest full backup took about 13 days and more than 200 T10k tape cartridges (.5 TB capacity). Petabyte file systems a… more
Date: October 23, 2008
Creator: Mokhtarani, Akbar; Andrews, Matthew; Hick, Jason & Kramer, William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of Fission Gas Release in UO2

Description: A two-stage gas release model was examined to determine if it could provide a physically realistic and accurate model for fission gas release under Prometheus conditions. The single-stage Booth model [1], which is often used to calculate fission gas release, is considered to be oversimplified and not representative of the mechanisms that occur during fission gas release. Two-stage gas release models require saturation at the grain boundaries before gas is release, leading to a time delay in rel… more
Date: January 23, 2006
Creator: Krohn, MH
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A General Methodology for Evaluation of Carbon Sequestration Activities and Carbon Credits

Description: A general methodology was developed for evaluation of carbon sequestration technologies. In this document, we provide a method that is quantitative, but is structured to give qualitative comparisons despite changes in detailed method parameters, i.e., it does not matter what ''grade'' a sequestration technology gets but a ''better'' technology should receive a better grade. To meet these objectives, we developed and elaborate on the following concepts: (1) All resources used in a sequestration … more
Date: December 23, 2002
Creator: Klasson, KT
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Basis for Selection of a Residual Waste Retrieval System for Gunite and Associated Tank W-9 at the Oak Ridge National Laboratory

Description: Waste retrieval and transfer operations at the Gunite{trademark} and Associated Tanks (GAATs) Remediation Project have been successfully accomplished using the Tank Waste Retrieval System. This system is composed of the Modified Light-Duty Utility Arm, Houdini Vehicle, Waste Dislodging and Conveyance System, Hose Management Arm, and Sludge Conditioning System. GAAT W-9 has been used as a waste-consolidation and batch-transfer tank during the retrieval of sludges and supernatants from the seven … more
Date: October 23, 2000
Creator: Lewis, B. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GLAST and Suzaku: Study on Cosmic-Ray Acceleration And Interaction in the Cosmos

Description: The Gamma-Ray Large Area Space Telescope (GLAST) is an international and multiagency mission scheduled for launch in the fall 2007. The Large Area Telescope (LAT), the primary instrument of the mission, will survey the high energy sky found to be very dynamic and surprisingly diverse by its predecessor the Energetic Gamma Ray Experiment Telescope (EGRET). GLAST-LAT will have a much improved sensitivity when compared with EGRET and extend the higher energy coverage to {approx} 300 GeV. The instr… more
Date: May 23, 2008
Creator: Kamae, T. & /KIPAC, Menlo Park /SLAC
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Program Evaluation - Automotive Lightweighting Materials Program Research and Development Projects Assessment of Benefits - Case Studies No. 2

Description: This report is the second of a series of studies to evaluate research and development (R&D) projects funded by the Automotive Lightweighting Materials (ALM) Program of the Office of Advanced Automotive Technologies (OAAT) of the U.S. Department of Energy (DOE). The objectives of the program evaluation are to assess short-run outputs and long-run outcomes that may be attributable to the ALM R&D projects. The ALM program focuses on the development and validation of advanced technologies t… more
Date: January 23, 2003
Creator: Das, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and Performance of the LCLS Cavity BPM System

Description: In this paper we present the design of the beam position monitor (BPM) system for the LCLS undulator, which features a high-resolution X-band cavity BPM. Each BPM has a TM{sub 010} monopole reference cavity and a TM{sub 110} dipole cavity designed to operate at a center frequency of 11.384 GHz. The signal processing electronics features a low noise single-stage three-channel heterodyne receiver that has selectable gain and a phase locking local oscillator. We will discuss the system specificati… more
Date: January 23, 2008
Creator: Lill, R. M.; Morrison, L. H.; Norum, W. E.; Sereno, N.; Waldschmidt, G. J.; Walters, D. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparison of Tracking Codes for the International Linear Collider

Description: In an effort to compare beam dynamics and create a ''benchmark'' for Dispersion Free Steering (DFS) a comparison was made between different International Linear Collider (ILC) simulation programs while performing DFS. This study consisted of three parts. Firstly, a simple betatron oscillation was tracked through each code. Secondly, a set of component misalignments and corrector settings generated from one program was read into the others to confirm similar emittance dilution. Thirdly, given th… more
Date: January 23, 2008
Creator: Latina, A.; Schulte, D.; /CERN; Smith, J.C.; /Cornell U., CLASSE; Poirier, F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Performance of a Fast Closed Orbit Feedback System with Combined Fast and Slow Correctors

Description: For NSLSII closed orbit feedback system, in order to limit the noise caused by digital step changes of the power supplies in the feedback system, the angular kick corresponding to the last bit of the power supplies for the fast correctors must be smaller than 3 nrad [1]. On the other hand, to carry out closed orbit alignment or orbit correction after a long term drift, they need strong correctors with 0.8 mrad kick strength. In order to avoid the requirement of correctors with both large streng… more
Date: June 23, 2008
Creator: Yu, L. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance profiles of major energy producers 1989

Description: Performance Profiles of Major Energy Producers 1989 is the thirteenth annual report of the Energy Information Administration's (EIA) Financial Reporting System (FRS). The report examines financial and operating developments, with particular reference to the 23 major energy companies (the FRS companies'') required to report annually on Form EIA-28. Financial information is reported by major lines of business including oil and gas production, petroleum refining and marketing, and other energy ope… more
Date: January 23, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen