The Guardian™ PM-Split-GN is a high-throughput gamma/neutron pedestrian monitor to screen people at airports, seaports, border crossings, train stations, high-threat facilities, and critical infrastructure. The extra-wide portal allows multiple people with baggage to walk through the system at the same time, making it ideal for high foot-traffic locations. Its passive split-monitoring technology accurately identifies the source individual—with a nuisance alarm rate of practically zero—while continuing to accommodate the steady flow of surrounding pedestrian traffic.

FEATURES

  • Gamma and neutron detection

  • Precise source location, accurately identifying an individual source even in high pedestrian traffic areas

  • Extra wide portal allows multiple people with baggage to walk through the system at the same time

  • Highly sensitive gamma and neutron detectors that discriminate between illicit sources, such as special nuclear materials, and legal sources, such as medical treatments

  • Fully digital system

  • Remote monitoring and service

Physical Specifications

  • Operating Configuration: Walk-through pedestrian monitor
  • Pillars: Left and right
  • Number of Gamma Detectors: 4 detectors; 2 per pillar
  • Gamma Detector Material: Polyvinyltoluene (PVT) plastic scintillator
  • Number of Neutron Detectors: 12 detectors; 6 per pillar
  • Neutron Detector Material: LiZnS-PMMA
  • External Dimensions: 93 in L x 60 in W x 16 in D (237 cm L x 152 cm W x 41 cm D)
  • Weight: 600 lbs (270 kg)

Performance Specifications

  • Gamma Radiation Detection: Meets ANSI N42.35 and IEC 62244
  • Special Nuclear Materials (SNM) Detection: Meets ANSI N42.35 and IEC 62244
  • Gamma False Alarm Rate: Less than 1 in 1,000,000 passages (typical)
  • Neutron False Alarm Rate: Less than 1 in 10,000 passages (typical)

Operation

  • Inspection Speed: 7 ft/s (2.2 m/s) nominal
  • Ports Radiation Alarm: Ethernet, RS485, Serial

Environment / Safety

  • Temperature: -4 °F to 122 °F (-20 °C to 50 °C )
  • Humidity: 5 to 95% non-condensing
  • Environmental Protection: IP64