Magnetic field detection coils with superconducting wiring pattern on flexible film

Superconducting detection coils for a superconducting quantum interference device, comprising:

• a flexible printed wiring film having a pair of opposed edges and capable of being flexed into a cylinder shape by bringing the opposed edges toward each other;
• and a superconducting wiring pattern formed on the flexible printed wiring film and having at least one generally U-shaped wiring portion for forming at least two circular wiring patterns when the printed wiring film is formed into a cylinder shape by bringing the opposed edges toward each other, the generally U-shaped wiring portion having two leg portions interconnected by a base portion, each leg portion having opposed ends which are brought into overlapping relation to form a circular wiring pattern when the printed wiring film is formed into a cylinder shape, the superconducting wiring pattern having a first electrode portion and a second electrode portion for connecting the circular wiring patterns to at least one superconducting quantum interference device.