electrode {

   name ground

   disc {    ; Floor
     radius 5
     center 0,0,0
     axis 0,0
   }

   cylinder { ; Walls
     radius 5
     end1 0,0,0
     axis 0,0
     length 6
   }

   disc {    ; Roof
     radius 5
     center 0,0,6
     axis 0,0
   }
}

electrode { ; Toroidal topload

   name topload

   toroid {
      outer_radius 0.7575
      inner_radius 0.5575
      center 0,0,2.85
      axis 0,0
   }
}

coil {   ; Flat spiral primary

   name primary

   radius1 0.275
   radius2 0.545
   end1 0,0, 0.995 + 51e-3    ; Set for measured k=0.187
   length 0    ; Flat spiral, therefore zero length
   axis 0,0    ; Vertical axis
   turns 9.5
   tap 7.5
   wirad 0.4e-2
}

coil  {   ; Cylindrical secondary

   name secondary

   radius 0.20
   length 1.575
   end1 0,0, 0.995
   axis 0,0     ; Vertical axis
   turns -939
   wirad 0.725e-3
}

