A Tabletop Persistent-Mode, Liquid-Helium-Free, 1.5-T/90-mm MgB2 "Finger" MRI Magnet for Osteoporosis Screening: Two Design Options [0.03%]
一种台式持续模式、无需液氦的1.5T/90mm镁硼二元化合物“指型”磁共振成像磁体：两种设计选择用于骨质疏松筛查
Dongkeun Park,Juan Bascuñán,Philip C Michael et al.
Dongkeun Park et al.
In this paper we present two design options for a tabletop liquid-helium-free, persistent-mode 1.5-T/90-mm MgB2 "finger" MRI magnet for osteoporosis screening. Both designs, one with and the other without an iron yoke, satisfy the following...
Inductively-coupled Frequency Tuning and Impedance Matching in HTS-based NMR Probes [0.03%]
HTS基NMR探头的感应耦合频率调节与阻抗匹配研究
Vijaykumar Ramaswamy,Arthur S Edison,William W Brey
Vijaykumar Ramaswamy
Nuclear Magnetic Resonance (NMR) probes based on High Temperature Superconducting (HTS) resonators have demonstrated significant gains in detection sensitivity. However, the widespread acceptance of this technology has been limited by some ...
Construction and Test Results of Coil 2 of a Three-Coil 800-MHz REBCO Insert for the 1.3-GHz High-Resolution NMR Magnet [0.03%]
三线圈800MHz稀土钡铜氧化物插入线圈之二线圈的研制及实验结果
Juan Bascuñán,Philip Michael,Seungyong Hahn et al.
Juan Bascuñán et al.
This paper focuses on the construction and test results of Coil 2 that is part of a trio of nested coils composing the REBCO 800 MHz insert. Upon its completion, the REBCO 800 MHz insert will be placed in the bore of a 500 MHz low temperatu...
Test of an 8.66-T REBCO Insert Coil with Overbanding Radial Build for a 1.3-GHz LTS/HTS NMR Magnet [0.03%]
一种用于13GHz LTS / HTS NMR磁体的8.66T REBCO插入线圈的带外加固径向结构测试
Timing Qu,Philip C Michael,Juan Bascuñán et al.
Timing Qu et al.
A 1.3-GHz/54-mm LTS/HTS NMR magnet, assembled with a 3-coil (Coils 1-3) 800-MHz HTS insert in a 500-MHz LTS NMR magnet, is under construction. The innermost HTS insert Coil 1 has a stack of 26 no-insulation (NI) double pancake (DP) coils wo...
Architecture and Transport Properties of Multifilamentary MgB2 Strands for MRI and Low AC Loss Applications [0.03%]
用于MRI和低交流损耗应用的多芯MgB2细线的结构和输运性质
F Wan,M D Sumption,M A Rindfleisch et al.
F Wan et al.
Standard in-situ type MgB2 strands manufactured by Hyper Tech Inc have 19 - 36 subelements, a monel outer sheath, and a Cu interfilamentary matrix. Typical transport Jc s of the strands are 2×105 A/cm2 with n-values of 20 - 30 at 4.2 K and...
Fabrication of X-ray Microcalorimeter Focal Planes Composed of Two Distinct Pixel Types [0.03%]
不同类型像素的X射线微测热仪焦平面制作
E J Wassell,J S Adams,S R Bandler et al.
E J Wassell et al.
We are developing superconducting transition-edge sensor (TES) microcalorimeter focal planes for versatility in meeting specifications of X-ray imaging spectrometers including high count-rate, high energy resolution, and large field-of-view...
Justus A Brevik,Nathan E Flowers-Jacobs,Anna E Fox et al.
Justus A Brevik et al.
We describe the implementation of new commercial pulse-bias electronics that have enabled an improvement in the generation of quantum-accurate waveforms both with and without low-frequency compensation biases. We have used these electronics...
Effects of filament size on critical current density in overpressure processed Bi-2212 round wire [0.03%]
超压加工棒形线芯大小对Bi-2212圆线临界电流密度的影响
Jianyi Jiang,Ashleigh Francis,Ryan Alicea et al.
Jianyi Jiang et al.
Bi2Sr2CaCu2Ox (Bi-2212) conductor is the only high temperature superconductor manufactured as a round wire and is a very promising conductor for very high field applications. One of the key design parameters of Bi-2212 wire is its filament ...
Demonstration of a Conduction Cooled React and Wind MgB2 Coil Segment for MRI Applications [0.03%]
用于MRI应用的传导冷却反应器和MgB2线圈段的演示
H S Kim,C Kovacs,M Rindfleisch et al.
H S Kim et al.
This study is a contribution to the development of technology for an MgB2-based, cryogen-free, superconducting magnet for an MRI system. Specifically, we aim to demonstrate that a react and wind coil can be made using high performance in-si...
Effects of Dielectric Substrates and Ground Planes on Resonance Frequency of Archimedean Spirals [0.03%]
介质基板与地层对阿基米德螺旋线谐振频率的影响
Jerris W Hooker,Vijaykumar Ramaswamy,Rajendra K Arora et al.
Jerris W Hooker et al.
Superconducting self-resonant spiral structures are of current interest for applications both in metamaterials and as probe coils for nuclear magnetic resonance (NMR) spectroscopy for high-sensitivity chemical analysis. Accurate spiral mode...