A large area scanning system using 14 MeV tagged neutrons has been built. The associated 4He particles emitted in the D + T reaction are detected in an array of Parallel Plate Avalanche Counters that defines a 10 × 100 cm 2 area in the scanning plane. Coincident gamma-rays are detected by 10 BaF 2 scintillators. The commissioning of the sensor has been completed. The capability of the system to determine the presence and the position of samples has been verified. Furthermore the possibility of on-line background subtraction is demonstrated.
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- January 2004
- Gas-filled counters: ionization chambers proportional and avalanche counters;
- Scintillation detectors