Patent ID: 7786450

Claim:
A multipole coils configuration for influencing particle beams, the multipole coils configuration comprising: a first coil, said first coil having at least one first winding defined by strip conductors disposed on a flexible printed circuit board, said first winding forming a first window having a first width in a peripheral direction and a first length in an axial direction, said first length being greater than or equal to said first width; and at least one second coil, said second coil having at least one second winding defined by strip conductors disposed on said flexible printed circuit board, said second winding forming a second window having a second width in a peripheral direction and a second length in an axial direction, said second length being greater than or equal to said second width, wherein said first and said second coils are disposed to concentrically enclose an imaginary axis and said printed circuit board is structured to roll up into at least one printed circuit board layer, wherein each of said first and said second widths is dimensioned to avoid generation of secondary interfering fields.