!multipole representation of wig2_14e integrated field for b=1.2T, polarity=-1
multi_wig1_14e : ab_multipole, superimpose, ref= WIG1_14E, ref_origin = beginning, &
                 b1 = 0.0038069 *0.3/beam[energy], b2=(0.00031-0.203)*0.3/beam[energy] 
!multi_wig2_14e : ab_multipole, superimpose, ref= WIG2_14E, ref_origin = end, &
!                 b2=-(0.203)*0.3/beam[energy]   !same as sextupole of theoretical 7-pole with polarity =1