primary detector

primary detector

[′prī‚mer·ē di′tek·tər]
(engineering)
References in periodicals archive ?
We will surround the plastic-scintillator detector with veto-detector paddles to reject electrons that are backscattered from the primary detector. The magnetic field at the energy detector is low, so if the electron backscatters it has little chance to be transported back through the entrance of the chamber.
In this instance, the unit has chosen to use OH-58D scout reconnaiss ance helicopters as the primary detector and B/1-187 Infantry as the secondary collector on the NAI.
Particularly sensitive to halogens due to its detection mechanism, it has continued to enjoy popularity as the primary detector for trace level determinations of chlorinated insecticides and halocarbon residues in environmental samples.