Demonstration of fast multiplicity counting of 252Cf using plastic scintillators and silicon photomultipliers

Year
2022
Author(s)
Erez Cohen - Nuclear Research Center Negev
Yuval Waschitz - Israel Atomic Energy Commission
Yair Ifergan - Ben-Gurion University of the Negev
Arindam Roy - Ben-Gurion University of the Negev
David Vartsky - Weizmann Institute of Science
Yakov Yehuda-Zada - Weizmann Institute of Science
Itamar Israelashvili - Phys. Dept., Nuclear Research Center - Negev
Arie Beck - Phys. Dept., Nuclear Research Center - Negev
Lior Arazi - Ben-Gurion University of the Negev
Abstract
We present a prototype for a multiplicity counter of fast neutrons and $\gamma$ rays, based on plastic scintillators coupled to SiPMs, read out individually by the TOFPET2 ASIC. We demonstrate the capabilities of our counter by measuring the Singles-, Doubles- and Triples-event rates of neutrons and $\gamma$ rays (without pulse shape discrimination), for a $^{252}$Cf source with a nominal activity of $4.9$ $\mu$Ci.