Y
Y. Iwasa
Researcher at Massachusetts Institute of Technology
Publications - 24
Citations - 1188
Y. Iwasa is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Superconducting magnet & Magnet. The author has an hindex of 15, co-authored 24 publications receiving 990 citations.
Papers
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Journal ArticleDOI
HTS Pancake Coils Without Turn-to-Turn Insulation
TL;DR: The new NI winding offers HTS coils enhanced performance in three key parameters: overall current density; thermal stability; and mechanical integrity.
Journal ArticleDOI
Field Mapping, NMR Lineshape, and Screening Currents Induced Field Analyses for Homogeneity Improvement in LTS/HTS NMR Magnets
TL;DR: Two general methods are described: field map processing and NMR lineshape analysis, that are currently using for the on-going research of field improvement techniques specifically applied to the authors' 700 MHz LTS/HTS NMR magnet.
Journal ArticleDOI
Spatial and Temporal Variations of a Screening Current Induced Magnetic Field in a Double-Pancake HTS Insert of an LTS/HTS NMR Magnet
TL;DR: Experimental and simulation results of a screening current induced magnetic field (SCF) in a high temperature superconductor (HTS) insert that constitutes a low-/high-temperature super Conductor (LTS/HTS), NMR magnet are presented.
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Effects of Impregnating Materials on Thermal and Electrical Stabilities of the HTS Racetrack Pancake Coils Without Turn-to-Turn Insulation
TL;DR: In this paper, a high temperature superconducting (HTS) coil without turn-to-turn insulation is proposed for the field coil of a wind turbine, and the thermal and electrical stabilities of non-insulated GdBCO racetrack pancake coils impregnated with CTD-521, Stycast 2850 FT, and paraffin through cool down, over-current, and repetitive cooling tests are examined.
Journal ArticleDOI
Effects of turn-to-turn compactness in the straight sections of HTS racetrack coils on thermal and electrical characteristics
TL;DR: In this paper, the thermal and electrical properties of two GdBCO-coated conductor racetrack coils, one insulated with Kapton insulation and the other without turn-to-turn insulation, were investigated by typical voltage-current measurement, charge-discharge, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coils.