| Popis: |
The system described here uses a pulsed electron beam from a linear accelerator (LINAC) to produce high-energy photon bursts from a metallic converter. The photons induce fissions in TRU waste package which is inside an original Neutron Separating and Counting Cavity-NS2C. When fission is induced in trace amounts of TRU contaminants in waste material, it provides “signatures” from fission products that can be used to assay the material before disposal. We counted delayed neutrons emitted after each pulse of the LINAC by using the Sequential Photon Interrogation and Neutron Counting Signatures—SPHINCS—technique. The use of SPHINS measurement technique coupled with NS2C facility improves the signal to noise ratio by a factor about 30. The dynamics of photofission and delayed neutron production, NS2C advantages and performances, use of an electron linear accelerator as a particle source, experimental and electronics details, and a future experimental works are discussed. |
