Experimental Verification of Screening Current-Induced Field Reduction Using a New HTS Coil Structure
نویسندگان
چکیده
منابع مشابه
A new method of fabricating HTS tape coil
High-Temperature Superconducting (HTS) materials can introduce substantial improvement in signal-to-noise ratio (SNR) of images for small-size sample or low-field MRI system (<1T) [1]. Expensive HTS thin film is typically used for making receiver surface coils for substantial SNR improvements [2]. A 5-inch HTS tape coil using silver-alloy sheathed Bi-2223 tape was first developed [3], which all...
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This paper presents 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 superconductor (LTS/HTS) NMR magnet. In this experiment, the HTS insert, a stack of 50 double-pancake coils, each wound with Bi2223 tape, was operated at 77 K. A screening current was induced in the...
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M. C. Cheng, K. H. Lee, K. C. Chan, K. K. Wong, E. S. Yang HKU Jockey Club MRI Engineering Center, Hong Kong, Hong Kong, China, People's Republic of Abstract A 5-inch RF receiving coil for 0.21T MRI system was developed using multifilament Bi-2223 High Temperature Superconducting (HTS) tape. The coil was designed to enclose the imaging sample so as to enhance the filling factor and field-of-vie...
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For the past 30 years, a major focus for new MRI technology and products has been in the development of higher field strength magnets. The rational for this is the higher the field strength, the better the Signal-to-Noise (SNR) of the MR image. This trend comes to an end as the field strength reaches 3Telsa (T), the highest field permitted for clinical use by FDA, CE and other regulatory agenci...
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ژورنال
عنوان ژورنال: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
سال: 2017
ISSN: 0389-2441,1880-0408
DOI: 10.2221/jcsj.52.253