The Experts below are selected from a list of 13710 Experts worldwide ranked by ideXlab platform
G.j. Caporaso - One of the best experts on this subject based on the ideXlab platform.
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A novel design for a high power Superconducting delay line
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), 1997Co-Authors: Yu Ju Chen, G.j. CaporasoAbstract:Potential designs for a high power Superconducting delay line of approximately 10 ms duration are described. The transmitted signal should have low dispersion and little attenuation to recapture the original signal. Such demands cannot be met using conventional metal conductors. This paper outlines a proposal for a new transmission line design using low temperature Superconducting Material which meets system specifications. The 25 W line is designed to carry pulsed signals with an approximate rise time of 8 nsec and a maximum voltage magnitude of 25 kV. Predicted electrical design and performance of the line are presented.
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Designs for a high power Superconducting delay line
Digest of Technical Papers. 11th IEEE International Pulsed Power Conference (Cat. No.97CH36127), 1997Co-Authors: Yu Ju Chen, G.j. CaporasoAbstract:Potential designs for a high power Superconducting delay line of approximately 10 /spl mu/s duration are described. The transmitted signal should have low dispersion and little attenuation to recapture the original signal. Such demands cannot be met using conventional metal conductors. This paper outlines a proposal for a new transmission line design using low temperature Superconducting Material which meets system specifications. The 25 /spl Omega/ line is designed to carry pulsed signals with an approximate rise time of 8 nsec and a maximum voltage magnitude of 25 kV. Predicted electrical design and performance of the line is presented.
Yu Ju Chen - One of the best experts on this subject based on the ideXlab platform.
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A novel design for a high power Superconducting delay line
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), 1997Co-Authors: Yu Ju Chen, G.j. CaporasoAbstract:Potential designs for a high power Superconducting delay line of approximately 10 ms duration are described. The transmitted signal should have low dispersion and little attenuation to recapture the original signal. Such demands cannot be met using conventional metal conductors. This paper outlines a proposal for a new transmission line design using low temperature Superconducting Material which meets system specifications. The 25 W line is designed to carry pulsed signals with an approximate rise time of 8 nsec and a maximum voltage magnitude of 25 kV. Predicted electrical design and performance of the line are presented.
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Designs for a high power Superconducting delay line
Digest of Technical Papers. 11th IEEE International Pulsed Power Conference (Cat. No.97CH36127), 1997Co-Authors: Yu Ju Chen, G.j. CaporasoAbstract:Potential designs for a high power Superconducting delay line of approximately 10 /spl mu/s duration are described. The transmitted signal should have low dispersion and little attenuation to recapture the original signal. Such demands cannot be met using conventional metal conductors. This paper outlines a proposal for a new transmission line design using low temperature Superconducting Material which meets system specifications. The 25 /spl Omega/ line is designed to carry pulsed signals with an approximate rise time of 8 nsec and a maximum voltage magnitude of 25 kV. Predicted electrical design and performance of the line is presented.
Tomoyoshi Motohiro - One of the best experts on this subject based on the ideXlab platform.
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Stacking 4” Si Wafer with Parallel 3-Stepped Micro-Trenches to Deposit Superconducting Material for Magnetic Energy Storage
2019 6th International Workshop on Low Temperature Bonding for 3D Integration (LTB-3D), 2019Co-Authors: Minoru Sasaki, Yasuhiro Suzuki, Tatsumi Hioki, Tomoyoshi MotohiroAbstract:A 89m-long spiral trench in 4” Si wafer is fabricated as the coil mold for the compact Superconducting magnetic energy storage. Seven parallel 3-stepped micro-trench can reduce the disconnection risk caused by defects being the safety each other.
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Multi-stepped spiral trench with smoothened scallop to deposit Superconducting Material for energy storage
2017 19th International Conference on Solid-State Sensors Actuators and Microsystems (TRANSDUCERS), 2017Co-Authors: Shinya Kumagai, Yasuhiro Suzuki, Tatsumi Hioki, Tomoyoshi Motohiro, Minoru SasakiAbstract:A 45m-long spiral trench over 3-inch wafer is fabricated for the coil of the Superconducting magnetic energy storage (SMES). The 3-stepped structure is fabricated by 3-time patterning and the subsequent Si etchings. This design can reduce the disconnection risk caused by the random defects. The recipe of the deep reactive ion etching is tuned to decrease the etching per cycle and the scallop. The smoothened sidewall is obtained by the oxidization and the grown SiO2 etching. This improves NbN film quality deposited later. The fabricated coil is confirmed to show the clear Superconducting with the increased current.
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Stacking wafer with multi-stepped silicon micro-trenches to deposit Superconducting Material for magnetic energy storage
2017 5th International Workshop on Low Temperature Bonding for 3D Integration (LTB-3D), 2017Co-Authors: Shinya Kumagai, Yasuhiro Suzuki, Tatsumi Hioki, Minoru Sasaki, O. Takai, H. Watanabe, Tomoyoshi MotohiroAbstract:A 45m-long spiral trench is fabricated as the coil mold for the compact Superconducting magnetic energy storage. Multiple patterning can reduce the disconnection caused by the defects. The wafers are polished. Single NbN coil is confirmed to show the Superconducting performance.
J P Contour - One of the best experts on this subject based on the ideXlab platform.
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high tc Superconducting quantum interference devices made by ion irradiation
Applied Physics Letters, 2006Co-Authors: N Bergeal, J Lesueur, G Faini, M Aprili, J P ContourAbstract:The authors describe a method to make Superconducting quantum interference devices (SQUIDs) formed in a single layer of high Tc Superconducting Materials. The Superconducting loop is patterned using ion beam irradiation through an in situ suitable gold mask. Josephson junctions are defined by a lower fluence irradiation through narrow slits opened in a polymethyl methacrylate resist. The critical current and the resistance of the SQUIDs at a given temperature can be adjusted precisely by choosing the fluence of irradiation to make the device operational at temperatures between 4.2K and the Tc of the Superconducting Material.
Clay S Hearn - One of the best experts on this subject based on the ideXlab platform.
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3 d transient modeling of bulk high temperature Superconducting Material in passive magnetic bearing applications
IEEE Transactions on Applied Superconductivity, 2015Co-Authors: Siddharth Pratap, Clay S HearnAbstract:Bulk high-temperature superconductors are being considered for use in several engineering applications, including passive magnetic bearings. These bearings, apart from being passive, i.e., inherently stable, also offer the promise of lower bearing losses; thus, they are being considered for use with flywheels for energy storage in applications related to frequency regulation and for correcting forecasting errors associated with renewable energy sources. The effort presented in this paper was undertaken to characterize the performance of these bearings such as longitudinal and transverse stiffness and loss characteristics. To this end, a finite-element method (FEM) using the T– $\Omega$ potentials was used for the formulation. The results of the FEM were verified with experiments. These experiments are described. This FEM tool was also used to guide the development of a reduced-order model, which could run faster and, therefore, could be used in larger system simulations. Some discussions about the run time on a desktop PC are also presented.
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3-D Transient Modeling of Bulk High-Temperature Superconducting Material in Passive Magnetic Bearing Applications
IEEE Transactions on Applied Superconductivity, 2015Co-Authors: Siddharth Pratap, Clay S HearnAbstract:Bulk high-temperature superconductors are being considered for use in several engineering applications, including passive magnetic bearings. These bearings, apart from being passive, i.e., inherently stable, also offer the promise of lower bearing losses; thus, they are being considered for use with flywheels for energy storage in applications related to frequency regulation and for correcting forecasting errors associated with renewable energy sources. The effort presented in this paper was undertaken to characterize the performance of these bearings such as longitudinal and transverse stiffness and loss characteristics. To this end, a finite-element method (FEM) using the T- Ω potentials was used for the formulation. The results of the FEM were verified with experiments. These experiments are described. This FEM tool was also used to guide the development of a reduced-order model, which could run faster and, therefore, could be used in larger system simulations. Some discussions about the run time on a desktop PC are also presented.
