This figure shows the most basic configuration of the Far Field Gamma Monitor. This configuration does not include automatic drum loading or movement of the drum rotation platform. It does not include the facility to move the detector closer to or father away from the drum. Also omitted from this system are gamma ray filters that would reduce the dose rate seen by the detector and a detector specific collimator. In this basic configuration the detector collimation is provided by recessing the detector into the cylindrical lead shield.