Patent ID: 7880578

Claim:
A conductor assembly of the type which, when conducting current generates a magnetic field having a main field component comprising at least one multipole order or in which, in the presence of a changing magnetic field, a voltage is induced, comprising: a double helix wiring pattern positioned along a wiring pattern axis to generate the main field component in directions transverse to the wiring pattern axis, the pattern including an inner coil row and an outer coil row, the inner coil row formed of a first conductor segment positioned a variable radial distance R from the wiring pattern axis to a center axis of the first conductor, and the outer coil row formed of a second conductor segment positioned a variable radial distance R′ from the wiring pattern axis to a center axis of the second conductor, the wiring pattern formed about an aperture region extending from the wiring pattern axis toward the wiring pattern, the distance R varying along a portion of the wiring pattern axis, the wiring pattern including a first section of fixed aperture diameter and a flared section wherein (i) a portion of the first conductor is positioned in the first section at a radial distance R=R 1 from the wiring pattern axis and (ii) another portion of the first conductor is positioned in the flared section a variable distance R from the axis which distance increases along the axis to a distance R=R 2 from the wiring pattern axis.