| 摘要 |
PURPOSE:To contrive the reduction of a sound generated by Lorentz power by increasing an output efficiency by enlarging a linear space of an inclined magnetic field by specifying a way of winding wires on four coils composing an inclined magnetic field coil. CONSTITUTION:Each of four saddlebacked coils 1 is formed by winding one wire by n-turns so that its are parts of both center side (CA) and end side (EA) are composed of n-pieces wires 11-1n and wires 21-2n, respectively. Also, a straight part parallel to a z-axis is composed n-pieces. The expanding angles of said arc parts theta1-thetan are different from one another and the positions of the wires 11-1n of the center-side are parts are different mutually. Distances Z1, Z2,... Zn from a center original point are changed. The strength of an inclined magnetic field is determined mainly by the wires 11, 12 etc. on the center side and the correction of a magnetic field uniform space is effected by the wire 1n etc. remoter from the center. Consequently, it becomes possible to reduce the number of turns, an area of the coil, and an inductance of the coil while enhancing a uniformity of an inclined magnetic field and a linear space.
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