Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1987-04-27
1988-08-02
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324307, G01R 3320
Patent
active
047616148
ABSTRACT:
A device and method for rapidly performing automatic magnet shimming using algebraic techniques, based on field maps computed by phase measurement within Carr-Purcell echo sequences. The correction computation for determining shim currents is carried out by a linear programming algorithm which compensates field inhomogeneities within the sample by a linear combination of all the shims. The procedure is non-iterative, thus avoiding instability problems and improving speed performance.
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Haselgrove John C.
Prammer Manfred G.
Phospho-Energetics, Inc.
Tokar Michael J.
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