c------------------------------------------------------------------------
c     coordinates of a X-Y COUPLE  in the PAMELA reference in cm
c------------------------------------------------------------------------

      double precision xPAM,yPAM,zPAM
      common/coord_xyz_PAM/xPAM,yPAM,zPAM

c------------------------------------------------------------------------
c     coordinates the extremes AB of the segment 
c     corresponding to a SINGLET in the PAMELA reference in cm
c------------------------------------------------------------------------

      double precision xPAM_A,yPAM_A,zPAM_A
      double precision xPAM_B,yPAM_B,zPAM_B
      common/coord_AB_PAM/xPAM_A,yPAM_A,zPAM_A,xPAM_B,yPAM_B,zPAM_B


c------------------------------------------------------------------------
c     spatial resolutions associated to the couple/singlet in cm
c     ( spat. res. is in principle a function of the angle, 
c     the multiplicity, the used PFA and so on...):
c
c     COUPLE  => both resxPAM and resyPAM are assigned
c     SINGLET => only one of the two is assigned
c------------------------------------------------------------------------

      double precision resxPAM,resyPAM
      common/resolution_PAM/resxPAM,resyPAM