Search Results - "Bascuñan, J"

A New High-Temperature Superconducting (HTS) 700-MHz Insert Magnet for a 1.3-GHz LTS/HTS NMR Magnet by Bascunan, J., Hahn, S., Kim, Y., Iwasa, Y.

“…Upon the totally unexpected theft of the original 600 MHz HTS insert that occurred in December 2011, we were forced to examine our entire 1.3 GHz NMR Magnet…”
Get full text

A Tabletop Persistent-Mode, Liquid Helium-Free 1.5-T MgB2 "Finger" MRI Magnet: Construction and Operation of a Prototype Magnet by Choi, Y.H., Li, Y., Park, D., Lee, J., Michael, P.C., Bascunan, J., Voccio, J.P., Iwasa, Y., Tanaka, H.

“…This paper presents the results of construction and operation of a persistent-mode, liquid-helium-free, small-scale prototype magnet for the development of a…”
Get full text

Two HTS options for a 600 MHz insert of a 1.3 GHz LTS/HTS NMR magnet: YBCO and BSCCO by HAHN, S, BASCUNAN, J, YAO, W, IWASA, Y

“…In 2008, the Phase 3 program to complete a 1.3 GHz (30.5 T) NMR magnet started at the Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology…”
Get full text

Spatial and Temporal Variations of a Screening Current Induced Magnetic Field in a Double-Pancake HTS Insert of an LTS/HTS NMR Magnet by Min Cheol Ahn, Yagai, T., Seungyong Hahn, Ando, R., Bascunan, J., Iwasa, Y.

“…This paper presents experimental and simulation results of a screening current induced magnetic field (SCF) in a high temperature superconductor (HTS) insert…”
Get full text

On the 600 MHz HTS Insert for a 1.3 GHz NMR Magnet by Bascunan, J., Seungyong Hahn, Dong Keun Park, Youngjae Kim, Iwasa, Y.

“…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…”
Get full text

A Stack of YBCO Annuli, Thin Plate and Bulk, for Micro-NMR Spectroscopy by Seungyong Hahn, Voccio, J., Dong Keun Park, Kwang-Min Kim, Tomita, M., Bascunan, J., Iwasa, Y.

“…A new annulus magnet, the latest in a series of compact magnets being developed for NMR spectroscopy applications at the MIT Francis Bitter Magnet Laboratory,…”
Get full text

Monofilament \hbox Wire for a Whole-Body MRI Magnet: Superconducting Joints and Test Coils by Jiayin Ling, Voccio, J., Youngjae Kim, Seungyong Hahn, Bascunan, J., Park, D. K., Iwasa, Y.

“…This paper presents recent results from our continued development of a 0.5 T whole-body MRI magnet at the Francis Bitter Magnet Laboratory. HyperTech Research…”
Get full text

Two HTS options for a 600MHz insert of a 1.3GHz LTS/HTS NMR magnet: YBCO and BSCCO by Hahn, S., Bascuñán, J., Yao, W., Iwasa, Y.

“…In 2008, the Phase 3 program to complete a 1.3GHz (30.5T) NMR magnet started at the Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology. It…”
Get full text

Bulk and Plate Annulus Stacks for Compact NMR Magnets: Trapped Field Characteristics and Active Shimming Performance by Seungyong Hahn, Youngjae Kim, Voccio, J., Dong Keun Park, Gagnon, B., Bascunan, J., Tomita, M., Iwasa, Y.

“…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"…”
Get full text

Stability and quench protection of coated YBCO "Composite" tape by Iwasa, Y., Jankowski, J., Seung-yong Hahn, Haigun Lee, Bascunan, J., Reeves, J., Knoll, A., Yi-Yuan Xie, Selvamanickam, V.

“…The paper presents results, experiment and simulation, of quench/recovery study of coated YBCO "composite" test samples, cooled by boiling liquid nitrogen and…”
Get full text

Nonlinear Behavior of a Shim Coil in an LTS/HTS NMR Magnet With an HTS Insert Comprising Double-Pancake HTS-Tape Coils by Seung-yong Hahn, Min Cheol Ahn, Bascunan, J., Weijun Yao, Iwasa, Y.

“…This paper reports results, experimental and analytical, of the nonlinear behavior of a shim coil in the presence of an HTS coil assembled with double-pancake…”
Get full text

A Superconducting Joint Technique for Round Wires by Weijun Yao, Bascunan, J., Seungyong Hahn, Iwasa, Y.

“…This paper describes a technique to superconductively splice multifilament MgB 2 wires. To date the technique has achieved joints capable of carrying a…”
Get full text

An Analytical Technique to Elucidate Field Impurities From Manufacturing Uncertainties of an Double Pancake Type HTS Insert for High Field LTS/HTS NMR Magnets by Seung-yong Hahn, Min Cheol Ahn, Bobrov, E.S., Bascunan, J., Iwasa, Y.

“…This paper addresses adverse effects of dimensional uncertainties of an HTS insert assembled with double-pancake coils on spatial field homogeneity. Each DP…”
Get full text

A Digital Flux Injector Operated With a 317-MHz NMR Magnet by Yao, Weijun, Kim, Woo-Seok, Hahn, Seungyong, Bascunan, J., Lee, Hai-Gun, Iwasa, Yukikazu

“…The paper reports results of the operation of a digital flux injector coupled to a 317-MHz NMR magnet operating at 4.2 K in persistent mode. The experiments…”
Get full text

An LTS/HTS NMR Magnet Operated in the Range 600-700 MHz by Bascunan, J., Wooseok Kim, Hahn, S., Bobrov, E.S., Lee, H., Iwasa, Y.

“…As part of our 3-phase program to develop a high resolution 1 GHz LTS/HTS NMR magnet, a system composed of a 600 MHz LTS background NMR magnet and an HTS…”
Get full text

A "persistent-mode" magnet comprised of YBCO annuli by Iwasa, Y., Seung-yong Hahn, Tomita, M., Haigun Lee, Bascunan, J.

“…A new type of "persistent-mode" magnet, assembled from YBCO annuli, appears promising for "microcoil" NMR, in which compactness and simple manufacturability…”
Get full text

Quench Behavior, Quench Protection of a YBCO Test Coil Assembly by Trillaud, F., Min Cheol Ahn, Bascunan, J., Woo-Seok Kim, Voccio, J.P., Iwasa, Y.

“…This work aimed to study the quench behavior of a test coil assembly consisting of pancake coils. Parameters such as the quench energy and the normal zone…”
Get full text

A high-temperature superconducting double-pancake insert for an NMR magnet by Haigun Lee, Bascunan, J., Iwasa, Y.

“…For a low- and high-temperature superconducting (LTS/HTS) NMR magnet, an HTS insert, comprised of 50 double pancake (DP) coils, each wound with Bi2223/Ag tape,…”
Get full text

A low- and high-temperature superconducting NMR magnet: design and performance results by Bascunan, J., Haigun Lee, Bobrov, E.S., Iwasa, Y.

“…A nuclear magnetic resonance (NMR) magnet comprised of low- and high-temperature superconducting (LTS/HTS) coils has been built and operated at a frequency of…”
Get full text

Stability of bare and copper-laminated YBCO samples: experimental & simulation results by Ho Min Kim, Jankowski, J., Haigun Lee, Bascunan, J., Fleshler, S., Iwasa, Y.

“…In this study of stability of YBCO composite, we investigate quench/recovery behavior of YBCO test samples, bare and copper-laminated, by subjecting each test…”
Get full text