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High Power Systems For Dynamic Field Control And Shielding In The Mr Environment, Dustin W. Haw
High Power Systems For Dynamic Field Control And Shielding In The Mr Environment, Dustin W. Haw
Electronic Thesis and Dissertation Repository
This thesis addresses several aspects of gradient and shim coil design and fabrication. New design techniques are coupled with experimental construction methods to expand small animal insert gradient and shim technology. The design techniques are also applied to other areas of magnetic resonance hardware.
A custom 2-axis gradient insert coil is designed and fabricated for the purpose of eddy current characterization. The construction tolerances were examined via bench top inductance measurements and eddy currents measurement inside a 7.0 T head-only MR system. A great deal of freedom is available when positioning shielding coils with respect to their corresponding primary coils …
Modeling Of Magnetic Field Driven Simultaneous Assembly, Rene David Rivero
Modeling Of Magnetic Field Driven Simultaneous Assembly, Rene David Rivero
Dissertations
The Magnetic Field Driven Simultaneous Assembly (MFDSA) is a method that offers a non-statistical and deterministic solution to the problem of assembly via batch processing; a hybrid of serial and parallel processing. The technique requires the use of electromagnets as well as soft and hard magnetic materials that are applied to devices and recesses respectively. The MFDSA approach offers the ability to check and correct errors in real-time and is capable of scalable, versatile, and high-yield integration.
Devices, coated with a layer of soft magnetic material, are moved from initial to final positions along predetermined pathways through the action of …