Variable-Width Superconducting Magnet Coil for MRI Field Distribution

The patent divides the superconducting tape into multiple segments or layers that are stacked and connected to form the Roebel cable structure. This segmentation allows the tape to be arranged in a configuration that improves AC magnetic field performance while simplifying the manufacturing process by using standard cutting and stacking operations rather than complex continuous forming processes.

The patent optimizes the local geometry and arrangement of the tape segments to match the local magnetic field distribution. By varying the tape width, thickness, or stacking pattern in different regions of the cable, the design achieves superior AC magnetic field performance in critical areas without requiring complex processing throughout the entire cable length.

The patent transitions from uniform width tape to variable width tape where the width is optimized for specific magnetic field conditions. The tape width varies along its length or across different layers to match the local magnetic field distribution, achieving superior field optimization while using manufacturing processes that are extensions of standard tape production techniques.

The patent changes the geometric parameters of the tape, specifically the width, to optimize magnetic field distribution. By controlling the tape width as a variable parameter rather than a fixed value, the design achieves precise magnetic field optimization while the manufacturing process remains relatively simple, requiring only controlled variations in width that can be achieved through standard fabrication methods.