Differential geometry method for minimum hard-way bending 3D design of coils with ReBCO tape conductor

An inverse design method for 3D toroidal gradient coils

Introduction: Traditional gradient coil design is typically constrained to cylindrical, planar, spherical or conical surfaces. Gradient coil geometry is important in arriving at optimal trade-offs between gradient homogeneity, coil efficiency and inductance [1]. Additional concerns such as the induction of eddy currents and peripheral nerve stimulation, patient claustrophobia and acoustic noise...

Theoretical design of 3D gradient coils

Introduction: Gradient coil design is constrained by the important coil parameters of inductance, efficiency and field homogeneity [1]. Additional secondary concerns include reducing the induction of eddy currents and peripheral nerve stimulation, patient claustrophobia and acoustic noise [2]. The search for optimal coil geometries to address various combinations of these design criteria has re...

Investigations of HTS Twisted Stacked-Tape Conductor

Experimental Production and Evaluation of Racetrack Coils for REBCO On-board Magnet

Work has been conducted to develop REBCO (Rare-Earth Barium Copper Oxide) magnets for Maglev. REBCO is one of several high temperature superconducting materials and has a high current density at high temperatures and in high magnetic field environments. The REBCO coated conductor will make it possible to raise the operating temperature of on-board magnets without increasing the coil weight. Sin...

Geometry Calibration Phantom Design for 3D Imaging

Most approaches to 3D x-ray imaging geometry calibration use some well-defined calibration phantom containing point markers. The calibration aims at minimizing the so-called re-projection error, i.e., the error between the detected marker locations in the acquired projection image and the projected marker locations based on the phantom model and the current estimate of the imaging geometry. The...