Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Juan Bascunan"'
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-4
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-5
Publikováno v:
IEEE Transactions on Applied Superconductivity. 32:1-5
The No-insulation-like (NI) coil's turn-to-turn current paths prevent local heating by forcing the current to bypass into nearby turns when a hot spot appears in a coil. However, the changing direction of the current by bypassing will change the magn
Publikováno v:
IEEE Transactions on Applied Superconductivity. 32:1-5
We present the operation result of a cryogen-free 23.5 T/φ12.5 mm-cold-bore magnet prototype composed of a stack of 12 no-insulation (NI) REBCO single pancake coils-ten middle coils of 6-mm wide and two end coils of 8-mm wide tape-forming 6 double p
Publikováno v:
IEEE Trans Appl Supercond
We present a design overview of the MIT 1.3-GHz LTS/HTS NMR magnet (1.3G) with a newly designed 835-MHz REBCO insert (H835) as a replacement for the 800-MHz REBCO insert (H800) that was damaged when it quenched during operation in 2018. The new H835
Autor:
Yukikazu Iwasa, Yi Li, Yoonhyuck Choi, Juan Bascunan, Hiromi Tanaka, Woo Seung Lee, Dong Keun Park
Publikováno v:
IEEE Transactions on Applied Superconductivity. 30:1-5
Screening currents in REBCO conductors, induced by time-varying magnetic fields, not only affect the field quality of HTS coils but also cause strain gradients along REBCO tape width that may overstress REBCO conductors used in NMR and other high-fie
Autor:
Woo Seung Lee, Hideki Tanaka, Hiromi Tanaka, Yukikazu Iwasa, Yi Li, Yoonhyuck Choi, Juan Bascunan, Dong Keun Park, Jerome L. Ackerman
Publikováno v:
IEEE Transactions on Applied Superconductivity. 30:1-5
We have finalized the design of a full-scale tabletop 1.5-T/90-mm MgB $_2$ finger MRI magnet system for osteoporosis screening based on our preliminary test results of small coils and superconducting joints. The magnet will operate in persistent mode
Publikováno v:
IEEE Trans Appl Supercond
The No-Insulation (NI) winding provides intrinsic bypassing current paths that enable self-protection from overheating. The self-protection of the NI coil is one of the most promising protection techniques for the high field high-temperature supercon
Autor:
Yukikazu Iwasa, Yi Li, So Noguchi, Yoon Hyuck Choi, Jiho Lee, Juan Bascunan, Philip C. Michael, Dong Keun Park, Seungyong Hahn
Publikováno v:
IEEE Trans Appl Supercond
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-pancake coils (
Autor:
Yoonhyuch Choi, So Noguchi, Jiho Lee, Seungyong Hahn, Philip C. Michael, Dong Keun Park, Juan Bascunan, Yukikazu Iwasa, Yi Li
Publikováno v:
IEEE Trans Appl Supercond
The MIT 1.3-GHz LTS/high-temperature superconducting (HTS) nuclear magnetic resonance (NMR) magnet is currently under development. The unique features of this magnet include a three-nested formation for an 800-MHz REBa2Cu3Ox (RE = Y, Gd) (REBCO) inse