SaphyGATE GN

One single 3He-free detector to spot Gamma and Neutron radiations

The SaphyGATE GN is the sole radiation portal monitor on the market that is able to both detect and discriminate Gamma and Neutron radiations, with only one type of plastic scintillation detector.

This technology makes it possible to avoid using Helium-3 gas whose cost fluctuates but remains high, given its rarity.

The detection of Neutron radiations allows for a better characterization of the threats, by revealing the presence of Special Nuclear Materials (SNM) entering in the production process of dirty bombs and Radiological Dispersion Devices.

Versatility Modularity

Fully modular, the system can be composed of 1 to 4 detectors, depending on the envisioned monitoring area as well as control (pedestrians, luggage, containers, light or heavy vehicles, etc.).

Detectors are available in 2 versions: « standard sensitivity » with 4 scintillators, or “high sensitivity” with 8 scintillators.

Under a standard « heavy vehicle” configuration, the system consists in 2 detectors situated on either side of the road or track, with a 5-meter wide anthrax between each portal monitor. The height of detection between the ground and the plastic scintillators’ center is 2 meters high.

• 1 to 4 Gamma/Neutron detectors
• 1 presence detection kit
• 1 electronic processing unit
• 1 supervision central unit (optional)
• 1 Remote alarm monitoring system (optional)

• 1 waterproof protection cabinet (IP65)
• 4 to 8 sets of scintillators/photomultipliers
• 1 signal processing card

H: 1,900 x W: 660 x D: 430 mm.

Approx. 160 kg.

• Energy range: from 50 keV. to 7 MeV.
• Gamma sensitivity: ≥ 15 c/s / kBq. for 137Cs at 1 meter
• Detection limits:
• 133 Ba: 181 kBq
• 137 Cs: 239 kBq
• 60 Co: 105 kBq

100 ms.

1/10 000 passages

Compliant with international standards, including IEC 62022 & ANSI N42.35 & N42.42

• 4 scintillators: H: 1,944 x L: 580 x P: 218 mm
• 8 scintillators: H: 1,944 x L: 580 x P: 405 mm

From 30°C to +55°C

Up to 93%

 IP65

• Gamma background: 200 nSv/h
• Detection probability: more than 80% with a confidence interval close to 95%
• Source speed: 8km/H
• Inter-pillar length: 5m.

BVS 300 case: Remote alarm monitoring system with visual and audio indicators on detectors

Camera: Identification of people and vehicles with photos and videos

Ultrasonic sensor: presence sensor adapted to cargo control

On-site supervision software: several control centres can be simultaneously monitored in a same infrastructure

Multisite supervision software: all control centres, even from different sites, can be simultaneously monitored.