Patent ID: 7064550
Filing Date: 2006-06-20
Classification: G01R,H01F

Abstract:
1. A method for magnetic field drift compensation for a superconducting magnet system, the method comprising: electrically coupling a micro-flux injection system to a secondary B magnetically coupling the secondary compensation circuit to the superconducting magnet via the secondary B switching the micro-flux injection system on and off to induce a first current from a flux coil of the secondary compensation circuit into the secondary B wherein the micro-flux system includes: a superconducting circuit loop having first and second legs connected in parallel to the secondary B a trigger mechanism in communication with the first leg of the circuit loop, the trigger configured to quench the first leg and force the second current induced from the first current of the flux coil to the secondary B wherein a rate of field compensation by the secondary field is responsive to a frequency of an ON/OFF rate of the trigger.