Conversion of fast neutrons for neutron radiography with TPX2 detector
Šagátová Andrea,
Fülöp Marko,
Novák Andrej,
Vrban Branislav,
Lüley Jakub,
Čerba Štefan,
Benkovský Ivan,
Zaťko Bohumír
Affiliations
Šagátová Andrea
Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3 St., 841 04Bratislava, Slovak Republic
Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3 St., 841 04Bratislava, Slovak Republic
Vrban Branislav
Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3 St., 841 04Bratislava, Slovak Republic
Lüley Jakub
Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3 St., 841 04Bratislava, Slovak Republic
Čerba Štefan
Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3 St., 841 04Bratislava, Slovak Republic
Benkovský Ivan
Comenius University in Bratislava, Faculty of Pharmacy, Odbojárov 10 St., 832 32Bratislava, Slovak Republic
Zaťko Bohumír
Slovak Academy of Sciences, Institute of Electrical Engineering, Dúbravská cesta 9 St., 841 01Bratislava, Slovak Republic
The Timepix2-based hybrid-pixel detector with a 500 μm thick silicon sensor was employed for fast-neutrons registration to be applied in neutron radiography of metallic printed circuit heat exchanger (PCHE). Two energies of neutrons were experimentally tested. The detection of 3.55 MeV neutrons from the deuteron–deuteron (DD) reaction was compared to 15.7 MeV neutrons from the deuteron–tritium (DT) neutron generator. In order to distinguish the signal induced by the registered neutrons from the accelerator background, filtration of the recorded particle spectral tracks was applied. The benefit of applying hydrogen-based converter layer for 3.55 MeV neutrons was observable. On the other hand, in the case of 15.7 MeV neutrons, the direct registration by interaction with the sensor Si significantly dominates the conversion.
