Double‑Sided Gamma–Neutron Radiation Portal

Strengthen entrance security with a two‑pillar gamma–neutron portal that lets people walk through without stopping. PoliGate™ Pedestrian GN2 combines two 6.6 L plastic‑scintillator gamma detectors with two ¹⁰B/ZnS(Ag) neutron detectors (³He‑free) to deliver sensitive screening of pedestrians and hand‑carried items. It’s IEC 62244:2019 compliant, IP65‑rated, and supports local/remote alarms, occupancy sensors and Ethernet‑linked operator software. Backup power provides more than eight hours of operation for resilience at critical entries.

Why teams choose GN2

• True dual‑radiation coverage (gamma & neutron) with two pillars for higher sensitivity and lane symmetry.
• No‑stop operation through control zones up to 1.5 m × 2.0 m (W × H) to keep foot traffic moving.
• Modern, ³He‑free neutron detection using ¹⁰B/ZnS(Ag) solid‑state technology.
• Built for real entrances: IP65 ingress protection and wide environmental range (−30 °C to 50 °C; up to 98 % RH at 40 °C).
• Operational resilience with >8 h internal backup battery, local & remote alarms, presence detection and optional video.
• Easy to network & audit via Ethernet (cable up to ~100 m) and user‑friendly software for live data, alarms and logging.

How it works

GN2’s two detection pillars flank the lane so people and bags are screened as they walk through. Each pillar houses a 6.6 L PVT gamma detector and a ¹⁰B/ZnS(Ag) neutron detector; both signatures are processed in real time to trigger visual and audible alarms when thresholds are exceeded. Adjustable sensitivity parameters let you tune performance for your site and background.

Typical system configuration

• Two gamma–neutron detection pillars (lane set)
• Local and remote light/sound alarms; presence (occupancy) sensors
• Operator software for live display, alarm review and data export
• Ethernet connection to operator workstation / site network
• Internal rechargeable battery providing >8 h backup power
• Optional video surveillance integration

Key specifications

• Radiation: gamma & neutron
• Detectors (per system): 2 × gamma (organic plastic scintillator, 6600 cm³ each); 2 × neutron (¹⁰B/ZnS(Ag), ³He‑free)
• Energy range (gamma): 20 keV – 3 MeV
• Gamma sensitivity: ~145 cps per nSv/h (²⁴¹Am); ~35 (¹³⁷Cs); ~16 (⁶⁰Co)
• Control zone: up to 1.5 m (W) × 2.0 m (H); no‑stop screening
• Ingress protection: IP65
• Operating conditions: −30 °C to 50 °C; 84–106.7 kPa; up to 98 % RH at 40 °C (non‑condensing)
• Power: 85–264 V AC, 47–63 Hz; internal 12 V battery (>8 h)
• PC comms: Ethernet (cable up to ~100 m)
• Weight (approx.): 130 kg per gamma–neutron pillar; ~265 kg total
• Service/MTBF: mean recovery time ~60 min; MTBF ~10,000 h; mean service lifetime ~8 years
• Standards: IEC 62244:2019 compliance

Where GN2 fits

• Airports, ports, rail and public‑event venues
• Government, research and nuclear facilities
• Scrap and waste management sites; industrial plants
• Customs & border control; police & security screening

Why J3Seven

We integrate radiation‑detection portals for Australian end users — from lane design to operator training — and align performance with your policy, compliance and audit needs.

Deploy double‑sided, walk‑through gamma–neutron screening. Enquire about PoliGate™ Pedestrian GN2 today.