The EM1 was commissioned by EURATOM for their safeguards program.
It is a portable instrument designed for the measurement of Uranium and Plutonium

The EM1 is a lightweight portable MCA for nuclear radiation analysis. Spectrum data and results are presented on a built-in LCD display. An infrared serial link is installed for transferring data to a PC, and can be used for complete remote operation of the instrument from the PC. The mode of data collection and analysis is controlled by 4 'soft' keys adjacent to the display which are labeled on the screen. Thus the instrument can be held and operated with one hand providing a powerful tool for collecting data on site.

The design of the EM1 makes it extremely flexible for customisation to specific applications. The operating software is downloaded from a PC and stored in Flash RAM allowing different ROI's and data interpretation to be programmed. The EM1 was initially designed as a nuclear materials analyser for use in Safeguards, and is currently being expanded to include dose rate measurements.

Advanced features enable the classification of the spectrum, based upon comparison and simple calculations of the ROI values, into the following groups: