Search Results

open access

Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics Executive Summary

Description: Research and development (R&D) activities on advanced, higher performance Light Water Reactor (LWR) fuels have been ongoing for the last few years. Following the unfortunate March 2011 events at the Fukushima Nuclear Power Plant in Japan, the R&D shifted toward enhancing the accident tolerance of LWRs. Qualitative attributes for fuels with enhanced accident tolerance, such as improved reaction kinetics with steam resulting in slower hydrogen generation rate, provide guidance for the design and … more
Date: February 1, 2014
Creator: Bragg-Sitton, Shannon

Advanced Models and Controls for Prediction and Extension of Battery Lifetime

Description: Predictive models of capacity and power fade must consider a multiplicity of degradation modes experienced by Li-ion batteries in the automotive environment. Lacking accurate models and tests, lifetime uncertainty must presently be absorbed by overdesign and excess warranty costs. To reduce these costs and extend life, degradation models are under development that predict lifetime more accurately and with less test data. The lifetime models provide engineering feedback for cell, pack and system… more
Date: February 1, 2014
Creator: Smith, K.; Wood, E.; Santhanagopalan, S.; Kim, G. & Pesaran, A.
open access

Analysis Of Post-Wet-Chemistry Heat Treatment Effects On Nb SRF Surface Resistance

Description: Most of the current research in superconducting radio frequency (SRF) cavities is focused on ways to reduce the construction and operating cost of SRF-based accelerators as well as on the development of new or improved cavity processing techniques. The increase in quality factors is the result of the reduction of the surface resistance of the materials. A recent test on a 1.5 GHz single cell cavity made from ingot niobium of medium purity and heat treated at 1400 {degrees}C in a ultra-high vacu… more
Date: February 1, 2014
Creator: Dhakal, Pashupati; Ciovati, Gianluigi; Kneisel, Peter K. & Myneni, Ganapati Rao
open access

CALiPER Retail Lamps Study 3

Description: The CALiPER program first began investigating LED lamps sold at retail stores in 2010, purchasing 33 products from eight retailers and covering six product categories. The findings revealed a fragmented marketplace, with large disparities in performance of different products, accuracy of manufacturer claims, and offerings from different retail outlets. Although there were some good products, looking back many would not be considered viable competitors to other available options, with too little… more
Date: February 1, 2014
Creator: Royer, Michael P. & Beeson, Tracy A.
open access

Cascade Apartments - Deep Energy Multifamily Retrofit , Kent, Washington (Fact Sheet)

Description: In December of 2009-10, King County Housing Authority (KCHA) implemented energy retrofit improvements in the Cascade multifamily community, located in Kent, Washington (marine climate.)This research effort involved significant coordination from stakeholders KCHA, WA State Department of Commerce, utility Puget Sound Energy, and Cascade tenants. This report focuses on the following three primary BA research questions : 1. What are the modeled energy savings using DOE low income weatherization app… more
Date: February 1, 2014
open access

CEBAF Upgrade: Cryomodule Performance And Lessons Learned

Description: The Thomas Jefferson National Accelerator Facility is currently engaged in the 12 GeV Upgrade Project. The goal of the 12 GeV Upgrade is a doubling of the available beam energy of the Continuous Electron Beam Accelerator Facility (CEBAF) from 6 GeV to 12 GeV. This increase in beam energy will be due in large part to the addition of ten C100 cryomodules plus associated new RF in the CEBAF linacs. The C100 cryomodules are designed to deliver 100 MeV per installed cryomodule. Each C100 cryomodule … more
Date: February 1, 2014
Creator: Drury, Michael A.; Davis, G. Kirk; Hogan, John P.; Hovater, J. Curt; king@jlab.org, Lawrence; Marhauser, Frank et al.
open access

Characterization Of Superconducting Samples With SIC System For Thin Film Developments: Status And Recent Results

Description: Within any thin film development program directed towards SRF accelerating structures, there is a need for an RF characterization device that can provide information about RF properties of small samples. The current installation of the RF characterization device at Jefferson Lab is Surface Impedance Characterization (SIC) system. The data acquisition environment for the system has recently been improved to allow for automated measurement, and the system has been routinely used for characterizat… more
Date: February 1, 2014
Creator: Phillips, H. Lawrence; Reece, Charles E.; Valente-Feliciano, Anne-Marie; Xiao, Binping & Eremeev, Grigory V.

Clean Energy Manufacturing: U.S. Competitiveness and State Policy Strategies

Description: The capital intensive nature of clean energy technologies suggests that manufacturing clean energy equipment has the potential to support state and local economic development efforts. However, manufacturing siting decisions tend to be complex and multi-variable decision processes that require in-depth knowledge of specific markets, the logistical requirements of a given technology, and insight into global clean tech trends. This presentation highlights the potential of manufacturing in supporti… more
Date: February 1, 2014
Creator: Lantz, E.
open access

Comparative Simulation Studies of Multipacting in Higher-Order-Mode Couplers of Superconducting RF Cavities

Description: Multipacting (MP) in higher-order-mode (HOM) couplers of the International Linear Collider (ILC) baseline cavity and the Continuous Electron Beam Accelerator Facility (CEBAF) 12 GeV upgrade cavity is studied by using the ACE3P suites, developed by the Advanced Computations Department at SLAC. For the ILC cavity HOM coupler, the simulation results show that resonant trajectories exist in three zones, corresponding to an accelerating gradient range of 0.6–1.6 MV/m, 21–34 MV/m, 32–35 MV/m, and > 4… more
Date: February 1, 2014
Creator: Li, Y. M.; Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)]; Liu, Kexin & Geng, Rongli
open access

Design And Commissioning Status Of New Cylindrical HiPIMS Nb Coating System for SRF Cavities

Description: For the past 19 years Jefferson Lab has sustained a program studying niobium films deposited on small samples in order to develop an understanding of the correlation between deposition parameters, film micro-structure, and RF performance. A new cavity deposition system employing a cylindrical cathode using the HiPIMS technique has been developed to apply this work to cylindrical cavities. The status of this system will be presented.
Date: February 1, 2014
Creator: Phillips, H. Lawrence; Macha, Kurt M. & Valente-Feliciano, Anne-Marie
open access

The Determination of Pertechnetate and Non-Pertechnetate Species in Hanford Tanks - Phase 1

Description: An analytical method is required to distinguish between the pertechnetate and non-pertechnetate forms of technetium; currently, the methods available only report the total technetium present in a sample. The overall objective of this effort is to develop a method for routinely analyzing Hanford tank waste for technetium in the pertechnetate and the non-pertechnetate forms. A phased approach will be deployed to accomplish this objective: Phase I Comparison of existing technetium analysis methods… more
Date: February 1, 2014
Creator: Duncan, James B. & Catlow, Stanley A.
open access

Development of Nb$_{3}$Sn Cavity Vapor Diffusion Deposition System

Description: Nb$_{3}$Sn is a BCS superconductors with the superconducting critical temperature higher than that of niobium, so theoretically it surpasses the limitations of niobium in RF fields. The feasibility of technology has been demonstrated at 1.5 GHz with Nb$_{3}$Sn vapor deposition technique at Wuppertal University$~\cite{Wuppertalthebest}$. The benefit at these frequencies is more pronounced at 4.2 K, where Nb$_{3}$Sn coated cavities show RF resistances an order of magnitude lower than that of niob… more
Date: February 1, 2014
Creator: Eremeev, Grigory V.; Macha, Kurt M.; Clemens, William A.; Park, HyeKyoung & Williams, R. Scott

DOE Collegiate Wind Competition

Description: This presentation for the January Stakeholder Engagement and Outreach webinar outlines the expanded need for workers in the wind industry and provides an overview of the DOE Wind Competition (to be held in May 2014) and the guiding principles of the competition.
Date: February 1, 2014
Creator: Jones, J.
open access

ECR Nb Films Grown on Amorphous and Crystalline Cu Substrates: Influence of Ion Energy

Description: In the pursuit of niobium (Nb) films with similar performance with the commonly used bulk Nb surfaces for Superconducting RF (SRF) applications, significant progress has been made with the development of energetic condensation deposition techniques. Using energetic condensation of ions extracted from plasma generated by Electron Cyclotron Resonance, it has been demonstrated that Nb films with good structural properties and RRR comparable to bulk values can be produced on metallic substrates. Th… more
Date: February 1, 2014
Creator: Valente, Anne-Marie; Eremeev, Grigory V.; Spradlin, Joshua K.; Phillips, H. Lawrence; Reece, Charles E.; Cao, C. et al.
open access

Global Analysis Of The Negative Parity Non-Strange Baryons In The 1/N{sub c} Expansion

Description: A global study of the negative parity non-strange baryon observables is performed in the framework of the 1/N{sub c} expansion. Masses, partial decay widths and photo-couplings are simultaneously analyzed. A main objective is to determine the composition of the spin 1/2 and 3/2 nucleon states, which come in pairs and involve two mixing angles which can be determined and tested for consistency by the mentioned observables. The issue of the assignment of those nucleon states to the broken SU(4) X… more
Date: February 1, 2014
Creator: Goity, Jose L.; Hampton University, Hampton, VA (United States)]; Gonzalez de Urreta, Emiliano Jose; CONICET, Rivadavia 1917, (1033) Buenos Aires (Argentina)]; Scoccola, Norberto N.; CONICET, Rivadavia 1917, (1033) Buenos Aires (Argentina) et al.
open access

Hood River Passive House, Hood River, Oregon (Fact Sheet)

Description: The Hood River Passive Project was developed by Root Design Build of Hood River Oregon using the Passive House Planning Package (PHPP) to meet all of the requirements for certification under the European Passive House standards. The Passive House design approach has been gaining momentum among residential designers for custom homes and BEopt modeling indicates that these designs may actually exceed the goal of the U.S. Department of Energy's (DOE) Building America program to "reduce home energy… more
Date: February 1, 2014
open access

Idaho National Laboratory Site Environmental Monitoring Plan

Description: This plan provides a high-level summary of environmental monitoring performed by various organizations within and around the Idaho National Laboratory (INL) Site as required by U.S. Department of Energy (DOE) Order 435.1, Radioactive Waste Management, and DOE Order 458.1, Radiation Protection of the Public and the Environment, Guide DOE/EH-0173T, Environmental Regulatory Guide for Radiological Effluent Monitoring and Environmental Surveillance, and in accordance with 40 Code of Federal Regulati… more
Date: February 1, 2014
Creator: Nordstrom, Jenifer
Back to Top of Screen