Apparatus and method for canceling magnetic fields
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jun 4, 2013
filing date -
Dec 27, 2010
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Abstract
Provided are an apparatus and a method for canceling magnetic fields. The apparatus includes a magnetic field canceling coil disposed adjacent to an inner wall of a magnetic shield room to surround the entire inner space or a portion of an inner space of the magnetic shield room; and a magnetic field canceling coil driver to supply current to the magnetic field canceling coil. The magnetic field canceling coil cancels a prepolarization magnetic field established on the wall of the magnetic shield room by a prepolarization coil disposed in the center of the magnetic shield room to minimize magnetic interference caused by the magnetic shield room.
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