Configuration for the compensation of external magnetic field interferences in a nuclear resonance spectrometer with superconducting magnet coil

US5278503A · kind A · utility

Assignee

• Bruker Analytische Messtechnik GmbH · DE

Inventors

• Tony Keller · Rheinstetten, DE
• Arne Kasten · Karlsruhe, DE

Key dates

• Filing date: Jan 17, 1992
• Grant date: Jan 11, 1994
• Expiry date: Jan 17, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/389
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In order to compensate external interfering fields inside a superconducting magnet coil, these interfering fields are measured outside of the magnet coil by means of a small induction coil in order to obtain a regulation signal, and, by means of a regulation algorithm, the current through a compensation coil is controlled. The induction coils are effectively decoupled from fluctuations of the stray field of the magnet coil and from vibrations.