High-flux tubular neutron detector based on µRWELL

The present invention relates to the field of nuclear power plant safety and the monitoring of the neutron flux leaving the core in order to provide information on the regular operation of the reactor and its safe operability, and more precisely to a method for manufacturing a gas detector with a tubular geometry for high-flux neutron detection based on µRWELL technology, and a detector obtained by said method.

How does it work?

The invention relates to a gas detector with a tubular geometry for high-flux neutron detection, based on µRWELL technology. Thermal neutrons are converted into alpha particles and lithium ions through capture processes on a borate cathode. The tubular geometry guarantees 360° sensitivity and dimensions that allow easy coupling with moderator volumes to thermalize the neutrons and thus be sensitive to a wider energy range. The detector is equipped with single neutron-sensitive electronics. The present invention also concerns a method for manufacturing the detector, which allows µRWELL detectors to be adapted to tubular geometries with extreme radii of curvature of less than 10 cm.

Applications

• Neutron imaging;
• Construction of portals for national security;
• Neutron detection
• Monitoring radioactive waste

Advantages

• TPC with a reduced active surface area, compared to a relatively large volume of gas;
• better spatial and temporal resolution of the detector over large areas;
• Greater reliability and longevity.