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parameter block "target"

This section contains all of the information about the target. You must provide A, Z, and the atomic mass (in amu) for the target nuclei, and the atomic mass (amu) of the recoil nucleus. The recoil nucleus is defined as the A-1 system for (e,e'p), and the A-2 system for A(e,e'$\pi$). For H(e,e'p), H(e,e'$\pi$/K), and D(e,e'$\pi$/K), you do not need to provide a recoil mass (targ.mrec_amu=0). You must also give the density and thickness of the target. For solid targets, give the target angle in degrees where 0 degrees is normal to the beam, and +ve angles are CCW rotations as seen from above (i.e. the downstream face of the target rotating towards the SOS). For cryotargets, the target angle is forced to be zero, but you must choose what target can to use (targ.can=1 is the beer can, targ.can=2 is the tuna/pudding can). Finally, you can give the target abundancy (in %). This is just used as a scale factor for the total luminosity. NOTE: targ.mrec_amu used to be targ.Arec, but this name was changed because it was very confusing (it needs to be the recoil mass, not the recoil A).

  targ.A = 1.                   ;  target A
  targ.Z = 1.                   ;  target Z
  targ.mass_amu = 1.007276      ;  target mass in amu
  targ.mrec_amu = 0.            ;  recoil mass in amu (eep=A-1 system,pion=A-2 )
  targ.rho = 0.0723             ;  target density (g/cm^3)
  targ.thick = 327.500          ;  target thick (mg/cm^2) 4.53cm long
  targ.angle = 0.               ;  target angle (for solid target) (degrees)
  targ.abundancy = 100.         ;  target purity (%)
  targ.can = 1                  ;  1=beer can (fpi), 2=pudding can (nucpi)