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Active cancellation of stray magnetic fields in a Bose-Einstein condensation experiment

Dedman, Colin J; Dall, Robert; Byron, Lesa; Truscott, Andrew

Description

A method of active field cancellation is described, which greatly reduces the stray magnetic field within the trap region of a Bose-Einstein condensation experiment. An array of six single-axis magnetic sensors is used to interpolate the field at the trap center, thus avoiding the impractical requirement of placing the sensor within the trap. The system actively suppresses all frequencies from dc to approximately 3000 Hz, and the performance is superior to conventional active Helmholtz...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/38543
Source: Review of Scientific Instruments
DOI: 10.1063/1.2472600

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