self.declareProperty("InputWorkspace","",Direction=Direction.Input,Description="Workspace to be normalised")
self.declareProperty("OutputWorkspace","",Direction=Direction.Input,Description="Name of the workspace that will contain the transmission histogram")
self.declareProperty("SampleThickness",1.0,Direction=Direction.Input,Description="Optional sample thickness value. If not provided the sample-thickness run propertywill be used.")