Speaker
Prof.
Alberto Quaranta
(Department of Industrial Engineering)
Description
The aim of HYDE (HYbrid DEtectors for neutrons) project, financed by INFN V commission, is the realization of detectors for neutrons made by 3D systems coupled to polysiloxane based scintillators suitable to convert the energy of fast and slow neutrons both in scintillation light and in reaction products detectable by the patterned silicon detector.
Polysiloxane scintillators are cheap, stable and resistant systems reaching up to 70% of scintillation yield with respect to the best plastic scintillators. In particular, it has been demonstrated that polysiloxane scintillators retain their scintillation yield after 50 kGy of absorbed dose.
By dispersing different dye molecules and boron rich compounds, the detection of both fast and thermal neutrons can be achieved. Recently, red emitting scintillators have been produced by combining three different dyes for promoting the wavelength shift in the red part of the spectrum, in order to match the responsivity curve of 3D photodetectors.
Further research has been carried on for studying the possibility of obtaining the pulse shape discrimination between gamma rays and neutrons.
Finally the first coupling tests between polysiloxane scintillators and 3D systems will be presented, evidencing a good matching of the organic resin into the silicon wells and the first results about the detection by silicon 3D detectors of recoil protons produced by 2 MeV neutrons in the polysiloxane will be presented.
Author
Prof.
Alberto Quaranta
(Department of Industrial Engineering)
