ETE Neutron Measurement Device

Overview: 

It is designed to measure the ambient dose equivalent of neutrons. Its spherical design complies with the recommendations of the International Commission on Radiological Protection(ICRP)and provides excellent energy and angular response. It can be used as a portable or fixed instrument. The device uses a moderating body composed of carbon-doped polyethylene and cadmium-doped heavy metals, combined with a He-3 neutron counter tube, to optimize the detector’s energy response. The parameters of the moderating sphere are calculated using MCNP simulations. It is mainly applied in areas such as reactors, nuclear fuel cycles in nuclear technology applications, spent fuel transportation and recycling, and nuclear, biological, and chemical defense systems 

Features: 

• Multipurpose: Can be used as a portable instrument or for fixed monitoring. 

• Moderation parameters calculated using MCNP simulations for improved energy response. 

• Spherical design for enhanced angular response.  

• Wide energy response range with energy compensation.  

• Excellent environmental adaptability with an extremely low false alarm rate. 

Technical Specifications: 

 

Main Unit
Detector Type	Built-in GM tube
Dose Rate Range	100 nSv/h to 100 mSv/h
Energy Range	45 keV  to 3 MeV
Alarm	Continuously adjustable threshold with sound and light alarms
Battery Life	≥ 24 hours
Data Connection	USB transmission
Neutron Probe
Sensor	He-3 counter tube
Measurement Range	0.01 µSv/h to 100 mSv/h
Energy Response Error	0.5 to  2.0 (in the 50 keV to 10 MeV range)
Sensitivity	Reading < 40 µSv/h (10 mSv/h in 137-Csγ field)
Energy Range	Thermal neutron – 20 MeV
γ Sensitivity	Reading < 40 µSv/h (10 mSv/h in 137-Csγ field)
Angular Response	±20% in all directions
Moderator Material	Polyethylene
Relative Inherent Error	≤ 15%
Response Time	≤ 5 seconds