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You searched on: Author: Jolene Splett

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1. Strain and Magnetic-Field Characterization of a Bronze-Route Nb^d3^Sn ITER Wire: Benchmarking of Strain Measurement Facilities at NIST and University of Twente
Published: 6/1/2012
Authors: Najib Cheggour, Arend Nijhuis, H J. G. Krooshoop, Xifeng Lu, Jolene D Splett, Theodore C Stauffer, Loren Frederick Goodrich, Matthew C. Jewell, Arnaud Devred, Y Nabara
Abstract: A benchmarking experiment was conducted to compare strain measurement facilities at the National Institute of Standards and Technology (NIST) and the University of Twente. The critical current of a bronze-route Nb^d3^Sn wire, which was fabricated for ...

2. Density, Speed of Sound, and Viscosity Measurements of Reference Materials for Biofuels
Published: 2/10/2012
Authors: Arno R Laesecke, Tara J Fortin, Jolene D Splett
Abstract: Measurements of density, speed of sound, and viscosity have been carried out on liquid standard reference materials for biofuels as a function of temperature at ambient pressure. The samples included anhydrous and hydrated bioethanol and two biodiese ...

3. Correlation Between the Pressure Dependence of the Critical Temperature and the Reversible Strain Effect on the Critical Current and Pinning Force in Bi^d2^Sr^d2^CaCu^d2^O^d8+x^ Wires
Published: 12/16/2011
Authors: Xifeng Lu, Loren Frederick Goodrich, Daniel Cornelis van der Laan, Jolene D Splett, Najib Cheggour, T G Holesinger, F J Baca
Abstract: Bi^d2^Sr^d2^CaCu^d2^O^d8+x^ round wires are among the most promising high-temperature superconductor candidates for making high-field magnets that operate at fields above 20 Tesla. Owing to the brittle nature of high-temperature superconductors, thei ...

4. Viscosity Measurements of NIST SRM 1617b
Series: OTHER
Published: 12/12/2011
Authors: Arno R Laesecke, Jolene D Splett
Abstract: None

5. Method for determining the irreversible strain limit of Nb^d3^Sn wires
Published: 6/6/2011
Authors: Loren Frederick Goodrich, Najib Cheggour, Xifeng Lu, Jolene D Splett, Theodore C Stauffer, Bernard J Filla
Abstract: We have defined a rigorous and reliable method for determining the irreversible strain limit of Nb^d3^Sn wires. The critical current ({I}I^dc^{/I}) is measured as a function of applied longitudinal strain ({epsilon}), {I}I^dc^{/I}({epsilon}), at one ...

6. Strain and Magnetization Properties of High Subelement Count Tube-type Nb3Sn Strands
Published: 6/6/2011
Authors: Najib Cheggour, X Peng, E Gregory, M Tomsic, M D Sumption, A. K. Ghosh, Xifeng Lu, Theodore C Stauffer, Loren Frederick Goodrich, Jolene D Splett
Abstract: Abstract,A tubular technique for economical production of Nb3Sn material with large numbers of subelements is being explored by Supergenics I LLC and Hyper Tech Research Inc. The number of subelements was increased to 919 (744 subelements plus 175 Cu ...

7. A Comparison of Methods for Computing the Residual Resistivity Ratio of High-Purity Niobium
Published: 2/17/2011
Authors: Jolene D Splett, Dominic F. (Dominic F.) Vecchia, Loren Frederick Goodrich
Abstract: We compare methods for estimating the residual resistivity ratio (RRR) of high-purity niobium samples and investigate the effects of using different functional models on the final value. RRR is typically defined as the ratio of the electrical resista ...

8. Use of Electronic Calibration Units for Vector-Network-Analyzer Verification
Published: 7/30/2010
Authors: Dylan F Williams, Arkadiusz C. (Arkadiusz) Lewandowski, Denis X LeGolvan, Ronald A Ginley, Chih-Ming Wang, Jolene D Splett
Abstract: We present measurements indicating that electronic calibration units are stable enough to be used in place of mechanical vector-network-analyzer verification artifacts. This enables a new fully automated approach to verifying microwave vector-network ...

9. Influence of Ti and Ta doping on the irreversible strain limit of ternary Nb^d3^Sn superconducting wires made by the restacked-rod process
Published: 4/1/2010
Authors: Najib Cheggour, Loren Frederick Goodrich, Theodore C Stauffer, Jolene D Splett, Xifeng Lu, A. K. Ghosh, G. Ambrosio
Abstract: Nb^d3^Sn superconducting wires made with restacked-rod process (RRP®) were found to have a dramatically improved resilience to axial tensile strain when alloyed with Ti as compared to Ta. Whereas Ta-alloyed Nb^d3^Sn in RRP wires showed permanent dama ...

10. Frequentist coverage properties of uncertainty intervals for weak Poisson signals in the presence of background
Published: 2/3/2010
Authors: Kevin J Coakley, Jolene D Splett, David S Simons
Abstract: We construct uncertainty intervals for weak Poisson signals in the presence of background. We consider the case where a primary experiment yields a realization of the signal plus background, and a second experiment yields a realization of the bac ...

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  • SP 250-XX: Calibration Services
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