Circular In Field Area

A circular In Field Area can be defined in ‘Settings’ with a fixed radius. Under “Settings” select the IFA type as “Circular” and enter the radius of the circle as the “IFA Factor”. The position of the IFA depends on the “Centre definition” setting. If the Centre definition is “Peak” the IFA is symmetric around the peak of the distribution. If the Centre definition is “Detector” it is symmetric around the geometric centre of the detector.

Note The radius of the IFA is fixed and independent of the actual field size.