Title :
A digital flux injector for NMR magnets
Author :
Mai, Rocky ; Hahn, Seung-yong ; Lee, Haigun ; Bascunán, Juan ; Iwasa, Yukikazu
Author_Institution :
MIT Francis Bitter Magnet Lab., Cambridge, MA, USA
fDate :
6/1/2005 12:00:00 AM
Abstract :
By periodically injecting a quantified amount of flux in a "slightly" resistive NMR magnet, a digital flux injector (DFI) enables the magnet to effectively operate in persistent mode. This paper presents: 1) parameters of the first full-scale DFI, specifically designed and built to operate with an LTS/HTS NMR magnet; and 2) its preliminary results when coupled to an LTS insert magnet in a bath of liquid helium.
Keywords :
high-temperature superconductors; nuclear magnetic resonance; superconducting magnets; HTS magnet; LTS insert magnet; NMR magnets; digital flux injector; Coils; Couplings; Helium; High temperature superconductors; Inductance; Magnets; Nuclear magnetic resonance; Prototypes; Testing; Wounds; Digital flux injector; LTS/HTS magnet; NMR magnet; persistent mode;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849663
