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GPU-optimized Code for Long-term Simulations of Beam-beam Effects in Colliders

Description: We report on the development of the new code for long-term simulation of beam-beam effects in particle colliders. The underlying physical model relies on a matrix-based arbitrary-order symplectic particle tracking for beam transport and the Bassetti-Erskine approximation for beam-beam interaction. The computations are accelerated through a parallel implementation on a hybrid GPU/CPU platform. With the new code, a previously computationally prohibitive long-term simulations become tractable. We … more
Date: June 1, 2013
Creator: Roblin, Yves; Morozov, Vasiliy; Terzic, Balsa; Aturban, Mohamed A.; Ranjan, D. & Zubair, Mohammed
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mobile biometric device (MBD) technology : summary of selected first responder experiences in pilot projects.

Description: Mobile biometric devices (MBDs) capable of both enrolling individuals in databases and performing identification checks of subjects in the field are seen as an important capability for military, law enforcement, and homeland security operations. The technology is advancing rapidly. The Department of Homeland Security Science and Technology Directorate through an Interagency Agreement with Sandia sponsored a series of pilot projects to obtain information for the first responder law enforcement c… more
Date: June 1, 2013
Creator: Aldridge, Chris D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Ultra High Gradient and High Q{sub 0} Superconducting Radio Frequency Cavities

Description: We report on the recent progress at Jefferson Lab in developing ultra high gradient and high Q{sub 0} superconducting radio frequency (SRF) cavities for future SRF based machines. A new 1300 MHz 9-cell prototype cavity is being fabricated. This cavity has an optimized shape in terms of the ratio of the peak surface field (both magnetic and electric) to the acceleration gradient, hence the name low surface field (LSF) shape. The goal of the effort is to demonstrate an acceleration gradient of 50… more
Date: June 1, 2013
Creator: Geng, Rongli; Clemens, William A.; Follkie, James E.; Harris, Teena M.; Kushnick, Peter W.; Machie, Danny et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Land-Use Requirements for Solar Power Plants in the United States

Description: This report provides data and analysis of the land use associated with utility-scale ground-mounted solar facilities, defined as installations greater than 1 MW. We begin by discussing standard land-use metrics as established in the life-cycle assessment literature and then discuss their applicability to solar power plants. We present total and direct land-use results for various solar technologies and system configurations, on both a capacity and an electricity-generation basis. The total area… more
Date: June 1, 2013
Creator: Ong, S.; Campbell, C.; Denholm, P.; Margolis, R. & Heath, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Radiolysis of AmVI Solutions

Description: The reduction of bismuthate-produced AmVI by 60Co gamma-rays was measured using post-irradiation UV/Vis spectroscopy. The reduction of AmVI by radiolysis was rapid, producing AmV as the sole product. Relatively low absorbed doses in the ~0.3 kGy range quantitatively reduced a solution of 2.5 x 10-4 M AmVI. The addition of bismuthate to samples during irradiation did not appear to protect AmVI from radiolytic reduction during these experiments. It was also shown here that AmV is very stable towa… more
Date: June 1, 2013
Creator: Mincher, Bruce J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improvements to Existing Jefferson Lab Wire Scanners

Description: This poster will detail the augmentation of selected existing CEBAF wire scanners with commercially available hardware, PMTs, and self created software in order to improve the scanners both in function and utility.
Date: June 1, 2013
Creator: McCaughan, Michael D.; Tiefenback, Michael G. & Turner, Dennis L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Scheme of Beam Synchronization in MEIC

Description: Synchronizing colliding beams at single or multiple collision points is a critical R&D issue in the design of a medium energy electron-ion collider (MEIC) at Jefferson Lab. The path-length variation due to changes in the ion energy, which varies over 20 to 100 GeV, could be more than several times the bunch spacing. The scheme adopted in the present MEIC baseline is centered on varying the number of bunches (i.e., harmonic number) stored in the collider ring. This could provide a set of dis… more
Date: June 1, 2013
Creator: Zhang, Yuhong; Derbenev, Yaroslav S. & Hutton, Andrew M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Inorganic Precursors for Manufacturing of Photovoltaic Devices: Cooperative Research and Development Final Report, CRADA Number CRD-08-308

Description: Both NREL and Rohm and Haas Electronic Materials are interested in the development of solution phase metal and semiconductive precursors for the manufacturing of photovoltaic devices. In particular, we intend to develop material sets for atmospheric deposition processes. The cooperation between these two parties will enable high value materials and processing solutions for the manufacturing of low cost, roll-to-roll photovoltaics.
Date: June 1, 2013
Creator: van Hest, M. & Ginley, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance of MicroLink Cells Developed Under Navy STTR: Cooperative Research and Development Final Report, CRADA Number CRD-11-426

Description: Evaluate MicroLink cells as a function of temperature and spectral irradiance following the teams' standard procedures. These measurements will include the standard procedures for evaluating multijunction cells including quantum efficiency measurements and current versus voltage measurements.
Date: June 1, 2013
Creator: Emery, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Supporting 64-bit global indices in Epetra and other Trilinos packages : techniques used and lessons learned.

Description: The Trilinos Project is an effort to facilitate the design, development, integration and ongoing support of mathematical software libraries within an object-oriented framework. It is intended for large-scale, complex multiphysics engineering and scientific applications [2, 4, 3]. Epetra is one of its basic packages. It provides serial and parallel linear algebra capabilities. Before Trilinos version 11.0, released in 2012, Epetra used the C++ int data-type for storing global and local indices f… more
Date: June 1, 2013
Creator: Jhurani, Chetan; Austin, Travis M.; Heroux, Michael Allen & Willenbring, James Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Risk Analysis and Decision Making FY 2013 Milestone Report

Description: Risk analysis and decision making is one of the critical objectives of CCSI, which seeks to use information from science-based models with quantified uncertainty to inform decision makers who are making large capital investments. The goal of this task is to develop tools and capabilities to facilitate the development of risk models tailored for carbon capture technologies, quantify the uncertainty of model predictions, and estimate the technical and financial risks associated with the system. T… more
Date: June 1, 2013
Creator: Engel, David W.; Dalton, Angela C.; Dale, Crystal; Jones, Edward & Thompson, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status and Prospects of the Global Automotive Fuel Cell Industry and Plans for Deployment of Fuel Cell Vehicles and Hydrogen Refueling Infrastructure

Description: Automobile manufacturers leading the development of mass-market fuel cell vehicles (FCVs) were interviewed in Japan, Korea, Germany and the United States. There is general agreement that the performance of FCVs with respect to durability, cold start, packaging, acceleration, refueling time and range has progressed to the point where vehicles that could be brought to market in 2015 will satisfy customer expectations. However, cost and the lack of refueling infrastructure remain significant barri… more
Date: June 1, 2013
Creator: Greene, David L & Duleep, Gopal
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Adding Complex Terrain and Stable Atmospheric Condition Capability to the Simulator for On/Offshore Wind Farm Applications (SOWFA)

Description: This presentation describes changes made to NREL's OpenFOAM-based wind plant aerodynamics solver so that it can compute the stably stratified atmospheric boundary layer and flow over terrain. Background about the flow solver, the Simulator for Off/Onshore Wind Farm Applications (SOWFA) is given, followed by details of the stable stratification/complex terrain modifications to SOWFA, along with some preliminary results calculations of a stable atmospheric boundary layer and flow over a simple se… more
Date: June 1, 2013
Creator: Churchfield, M. J.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Standard Chlorine of Delaware Superfund Site in Delaware City, Delaware

Description: The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Standard Chlorine of Delaware site in Delaware City, Delaware, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of dif… more
Date: June 1, 2013
Creator: Salasovich, J.; Geiger, J.; Mosey, G. & Healey, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Kolthoff Landfill in Cleveland, Ohio

Description: The U.S. Environmental Protection Agency (EPA), Region 5, in accordance with the RE-Powering America's Land initiative, selected the Kolthoff Landfill site in Cleveland, Ohio, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV … more
Date: June 1, 2013
Creator: Salasovich, J.; Geiger, J.; Mosey, G. & Healey, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Impact of ALD Coating on Mn-rich Cathode Materials

Description: LG Chem Power Inc. (LGCPI) and NREL have collaborated to demonstrate the scalability of the atomic layer deposition (ALD) coating process over the last 6 months, and the benefits of ALD coatings for long-term cycling and calendar life are being quantified. The objectives of this work are two-fold: 1) to evaluate the scalability of the process to coat LGCPI cathodes with alumina using the ALD technique, and 2) to demonstrate improvements in rate capability and life of ALD-coated LGCPI electrodes… more
Date: June 1, 2013
Creator: Santhanagopalan, S.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

State-Space Realization of the Wave-Radiation Force within FAST: Preprint

Description: Several methods have been proposed in the literature to find a state-space model for the wave-radiation forces. In this paper, four methods were compared, two in the frequency domain and two in the time domain. The frequency-response function and the impulse response of the resulting state-space models were compared against the ones derived by the numerical code WAMIT. The implementation of the state-space module within the FAST offshore wind turbine computer-aided engineering (CAE) tool was ve… more
Date: June 1, 2013
Creator: Duarte, T.; Sarmento, A.; Alves, M. & Jonkman, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Biodiesel Emissions Testing with a Modern Diesel Engine - Equipment Only: Cooperative Research and Development Final Report, CRADA Number CRD-10-399

Description: To evaluate the emissions and performance impact of biodiesel in a modern diesel engine equipped with a diesel particulate filter. This testing is in support of the Non-Petroleum Based Fuels (NPBF) 2010 Annual Operating Plan (AOP).
Date: June 1, 2013
Creator: Williams, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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