SPOTPOS

 The SPOTPOS card is used in conjunction with SPOTBEAM, SPOTDIR, SPOTTIME,
 and SPOTTRAN to define multiple beam spots. A new primary is created randomly
 in any of the listed beam spots according to their respective weight
 or in sequential order (see SPECSOUR).

 Warning : These five cards are activated by indicating 
SDUM
 = BEAMSPOT
 in the  SPECSOUR card. Barring this, the spot cards will be discarded.

 See also SPOTBEAM, SPOTDIR, SPOTTIME, SPOTTRAN


    
WHAT(1)
 = x-position of the beam spot

    
WHAT(2)
 = y-position of the beam spot

    
WHAT(3)
 = z-position of the beam spot

    
WHAT(4)
 > 0.0 : rectangular beam width in x-direction or
                    maximum beam radius depending on 
WHAT(6)
 (cm)
            < 0.0 : Gaussian beam profile in the x-direction. 
WHAT(4)
 is the
                    FWHM in cm
            = 0.0 : pencil beam along x
              
Default
 : 0.0

    
WHAT(5)
 > 0.0 : rectangular beam width in y-direction or
                    minimum beam radius depending on 
WHAT(6)
 (cm)
            < 0.0 : Gaussian beam profile in the y-direction. 
WHAT(5)
 is the
                    FWHM in cm
            = 0.0 : resets to default is no annular beam spot requested
                    (see 
WHAT(6)
), ignored otherwise
              
Default
 : same as x-width if no annular beam spot requested
                        (see 
WHAT(6)
)

    
WHAT(6)
 > 0.0 : flag for a rectangular beam spot
            < 0.0 : flag for an annular beam spot
            = 0.0 : ignored
              
Default
 : 0.0

    
SDUM
 :  Beam spot number (free format)
              
Default
: n, the number of the last defined spot


     
Notes:
         1) If no SPOTPOS card is issued for an otherwise (via SPOTBEAM)
            defined beam spot, the spot position and position spread are
            taken from the BEAM and BEAMPOS cards

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