Experimental and Numerical Studies on a Method to Mitigate Screening Current-Induced Field for No-Insulation REBCO Coils [0.03%]
一种减轻无绝缘REBCO线圈屏藏电流诱发场的实验和数值研究方法
Jiho Lee,Dongkeun Park,Yi Li et al.
Jiho Lee et al.
We present experimental and numerical studies on a method to mitigate screening current-induced field (SCF) for NI REBCO coil. The SCF is the major field error to incorporate a REBCO insert for a high field LTS/HTS magnet. The field-shaking...
Quench Analyses of the MIT 1.3-GHz LTS/HTS NMR Magnet [0.03%]
MIT 1.3 GHz 高温超导与低温超导组合核磁共振 magnets 的飞焦模拟分析
So Noguchi,Dongkeun Park,Yoonhyuch Choi et al.
So Noguchi et al.
The MIT 1.3-GHz LTS/HTS NMR magnet is currently under development. The unique features of this magnet include a 3-nested formation for an 800-MHz REBCO insert (H800) and the no-insulation (NI) winding technique for H800 coils. Because when ...
Juan Bascuñán,Seungyong Hahn,Dong Keun Park et al.
Juan Bascuñán et al.
We update here on the status of one of the main components of a 1.3 GHz NMR magnet currently being developed at the MIT Francis Bitter Magnet Laboratory (FBML): the 600 MHz HTS insert coil. Started in 2000 as a 3-phase program and currently...
Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout [0.03%]
Athena X-IFU兼容的40行时分复用读出演示
M Durkin,J S Adams,S R Bandler et al.
M Durkin et al.
Time-division multiplexing (TDM) is the backup readout technology for the X-ray Integral Field Unit (X-IFU), a 3,168-pixel X-ray transition-edge sensor (TES) array that will provide imaging spectroscopy for ESA's Athena satellite mission. X...
A Tabletop Persistent-Mode, Liquid Helium-Free 1.5-T MgB2 "Finger" MRI Magnet: Construction and Operation of a Prototype Magnet [0.03%]
一种桌面型常导模式、无需液氦的1.5T MgB2棒状磁体MRI magnets：原型机的构建与操作
Y H Choi,Y Li,D Park et al.
Y H Choi et al.
This paper presents results of construction and operation of a persistent-mode, liquid-helium-free, small-scale prototype magnet for the development of a tabletop 1.5-T "finger" MRI system for osteoporosis screening. The prototype magnet, c...
Assembly and Test of a 3-Nested-Coil 800-MHz REBCO Insert (H800) for the MIT 1.3 GHz LTS/HTS NMR Magnet [0.03%]
麻省理工学院1.3GHz LTS / HTS NMR磁体的800MHz REBCO嵌套三线圈（H800）的装配与测试
Philip C Michael,Dongkeun Park,Yoon Hyuck Choi et al.
Philip C Michael et al.
We present assembly and test results of a 3-nested-coil 800-MHz (18.8 T) REBCO insert (H800) for the MIT 1.3 GHz LTS/HTS NMR magnet currently under completion. Each of the three H800 coils is a stack of no-insulation (NI) REBCO double-panca...
YBCO and Bi2223 Coils for High Field LTS/HTS NMR Magnets: HTS-HTS Joint Resistivity [0.03%]
高温超导磁体中HTS线圈电阻率研究
Youngjae Kim,Juan Bascuñán,Thibault Lecrevisse et al.
Youngjae Kim et al.
This paper presents our latest experimental results on high-temperature superconducting (HTS) splice joints for HTS insert coils made of YBCO and Bi2223, that comprise a 1.3 GHz low-temperature superconducting/HTS nuclear magnetic resonance...
Bulk and Plate Annulus Stacks for Compact NMR Magnets: Trapped Field Characteristics and Active Shimming Performance [0.03%]
高紧凑型NMR磁体的大尺寸和板状扁环堆叠的特性和主动修匀性能研究
Seungyong Hahn,Youngjae Kim,John Voccio et al.
Seungyong Hahn et al.
We have constructed two "annulus" magnets, YP2800 and YB10; each consists of 2800 YBCO thin square "plate annuli" (YP2800) and 10 YBCO thick "bulk annuli" (YB10). Their trapped field characteristics, spatial and temporal, were investigated ...
Dong Keun Park,Jiayin Ling,Matt Rindfleisch et al.
Dong Keun Park et al.
Among key design and operation issues for MgB2 relevant to MRI magnets are: uniformity of current-carrying capacity over long lengths (>2 km) of wire; and reliability of a splicing technique. This paper presents experimental results of curr...
No-Insulation (NI) HTS Inserts for > 1 GHz LTS/HTS NMR Magnets [0.03%]
无绝缘(NI)高温超导 inserts 大于1GHz低温/高温超导NMR磁体
Seungyong Hahn,Dong Keun Park,John Voccio et al.
Seungyong Hahn et al.
A no-insulation (NI) technique has been applied to wind and test a NI HTS (YBCO) double-pancake coil at 4.2 K. Having little detrimental effect on field-current relationship, the absence of turn-to-turn insulation enabled the test coil to s...