def createInputDeck(self,cylinderPositions,inp=None,name=None):
        """ createInputDeck 

        Creates an input deck of the given geometry
        """
        self.inp = inp
        self.name = name
        if not inp:
            self.inp = 'INP_Cylinder.mcnp'
        if not name:
            self.name = 'OUT_Cylinder.'
        oFile = self.inp