A Stack of YBCO Annuli, Thin Plate and Bulk, for Micro-NMR Spectroscopy

Author

Seungyong Hahn ; Voccio, J. ; Dong Keun Park ; Kwang-Min Kim ; Tomita, M. ; Bascunan, J. ; Iwasa, Yukikazu

Author_Institution

Francis Bitter Magn. Lab., Massachusetts Inst. of Technol., Cambridge, MA, USA

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

4302204

Lastpage

4302204

Abstract

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, was built and tested in a bath of liquid nitrogen at 77 K. The magnet, YP2800, a stack of 2800 thin YBCO plate annuli, each either 40- or 46-mm square and 0.08-mm thick with a 26-mm bore, is an upgraded version of the two earlier plate annulus magnets, YP750 (750 plates) and YP1070 (1070). This paper presents construction details and test results of YP2800. Its spatial field homogeneity and temporal stability were measured, analyzed, and compared with those of YP750 and YP1070. Also, four YBCO bulk annuli, each 26-mm i.d., 46-mm o.d., and 5.2-mm thick, were added to YP2800 and their impacts on field strength and homogeneity were investigated experimentally.

Keywords

NMR spectroscopy; barium compounds; copper compounds; superconducting magnets; yttrium compounds; YBCO; YBCO plate annuli; YP1070; YP2800; compact magnet; liquid nitrogen; micro-NMR spectroscopy; plate annulus magnet; spatial field homogeneity; temperature 77 K; temporal stability; thin plate; Magnetic field measurement; Magnetic resonance imaging; Magnetic separation; Nuclear magnetic resonance; Solids; Superconducting magnets; Yttrium barium copper oxide; Compact annulus magnet; YBCO bulk annuli; YBCO thin plate annuli; micro-NMR spectroscopy;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2178969

Filename

6097038