Patent ID: 7912530
Filing Date: 2011-03-22
Classification: G01R

Abstract:
1. A magnetic detection coil, comprising: at least two second-order differential coils arranged in parallel, spaced a predetermined distance apart from each other, and composed of at least one of a superconductor or a metal material, wherein each of the at least two second-order differential coils comprises at least respective first, second, and third coils arranged in this order, wherein the respective first coil and the respective third coil of each second-order differential coil have mutually identical loop directions, wherein the respective second coil and the respective first coil of each second-order differential coil have mutually different loop directions, wherein the respective second coil and the respective third coil of each second-order differential coil have mutually different loop directions, wherein the respective first coil of a first second-order differential coil of the at least two second-order differential coils and the respective second coil of a second second-order differential coil of the at least two second-order differential coils have mutually identical loop directions, and wherein the respective second coil of the first second-order differential coil of the at least two second-order differential coils and the respective first coil of the second second-order differential coil of the at least two second-order differential coils have mutually identical loop directions.