HRM is a small, self contained gamma ray and thermal neutron radiation
detector for use in the interdiction and location of nuclear materials.
It was specifically designed to be easily used by trained security
forces and emergency responders. The high sensitivity of the instrument
is made possible by the use of a miniature photomultiplier tube
and solid state scintillation detector combined with a high pressure
Helium-3 filled proportional counter.
The HRM is
the size of a flashlight, and is intended to be handheld or worn
on the operator’s belt in the nylon holster provided. When
gamma rays or neutrons are detected at levels significantly above
the natural background, the unit quickly alerts the operator by
either sounding an audio alarm or vibrating, and lighting the
single digit LED displays. The operator can easily locate the
radiation source using the duty-cycle based audio alarm or vibration,
and the single digit LED displays.
The HRM is
designed for operators who need to quickly and discreetly detect
and locate a radiation threat in an unpredictable radiation background.
The rugged HRM is easy to use. Operators can be trained in proficient
use of the instrument in less than one hour.