This paper describes two general methods: field map processing and NMR lineshape analysis, that we are currently using for the on-going research of field improvement techniques specifically applied to our 700 MHz LTS/HTS NMR magnet. The validity of the methods is verified with comparison between calculations and experiments. Also, a simple but effective analysis has been used to identify the principal source of a remanent magnetic field measured in the bore of the 700 MHz LTS/HTS NMR magnet: the Screening Current induced Field (SCF) from the 100-MHz HTS insert, comprised of 48 double pancake coils, each wound with Bi2223 tape.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6936755 | PMC |
| http://dx.doi.org/10.1109/TASC.2008.921225 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Design Overview of the MIT 1.3-GHz LTS/HTS NMR Magnet with a New REBCO Insert.
IEEE Trans Appl Supercond
August 2021
Francis Bitter Magnet Laboratory/Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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.
View Article and Find Full Text PDFExperimental and Numerical Studies on a Method to Mitigate Screening Current-Induced Field for No-Insulation REBCO Coils.
IEEE Trans Appl Supercond
August 2019
Francis Bitter Magnet Laboratory (FBML)/Plasma Science and Fusion Center (PSFC) of Massachusetts Institute of Technology (MIT), 170 Albany Street, Cambridge, MA 02139, USA.
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 technique is going to be used to mitigate the SCF of 800-MHz REBCO insert magnet (H800) for MIT 1.
View Article and Find Full Text PDFQuench Analyses of the MIT 1.3-GHz LTS/HTS NMR Magnet.
IEEE Trans Appl Supercond
August 2019
Plasma Science and Fusion Center, Massachusetts Institute of Technology, MA 02138, USA.
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.
View Article and Find Full Text PDFAssembly and Test of a 3-Nested-Coil 800-MHz REBCO Insert (H800) for the MIT 1.3 GHz LTS/HTS NMR Magnet.
IEEE Trans Appl Supercond
August 2019
Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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.
View Article and Find Full Text PDFMIT 1.3-GHz LTS/HTS NMR Magnet: Post Quench Analysis and New 800-MHz Insert Design.
IEEE Trans Appl Supercond
August 2019
Francis Bitter Magnet Laboratory / Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Article Synopsis
- The MIT 800-MHz REBCO insert magnet (H800), designed to achieve 18.7 T and enhance a larger magnet for a proton resonance frequency of 1.3 GHz, unexpectedly quenched during operation in March 2018, leading to more extensive damage than initially assessed.
- A new design, H800N, is being developed to address flaws identified in the H800 by focusing on improved stability against quenching and minimizing damage during unforeseen events.
- Key enhancements for H800N include a single solenoid structure with better coil design, improved thermal stability, and reduced current margins for effective quench protection.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!