![Show Menu](styles/mobile-menu.png)
![Page Background](./../common/page-substrates/page0139.jpg)
Imperfections of B
0
and gradient
fields
• Imperfect magnetic field homogeneity:
• divergence of the magnetic field lines at the end of the coil
• imperfect winding of the superconducting wire
• variations of current densities in the wire
• Distortion of the magnetic field by metal close to the scanner