@article{77d5093fc1c1480ebcae0b63bd47cecd,
title = "Separation of gamma-ray and neutron events with CsI(Tl) pulse shape analysis",
abstract = "Fast neutrons are a large background to measurements of gamma-rays emitted from excited nuclei, such that detectors that can efficiently distinguish between the two are essential. In this paper we describe the separation of gamma-rays from neutrons with the pulse shape information of the CsI(Tl) scintillator, using a fast neutron beam and several gamma-ray sources. We find that a figure of merit optimized for this separation takes on large and stable values (nearly 4) between 5 and 10 MeV of electron equivalent deposited energy, the region of most interest to the study of nuclear de-excitation gamma-rays. Accordingly, this work demonstrates the ability of CsI(Tl) scintillators to reject neutron backgrounds to gamma-ray measurements at these energies.",
author = "Y. Ashida and H. Nagata and Y. Koshio and T. Nakaya and R. Wendell",
note = "Funding Information: This experiment was carried out in cooperation with the JSNS2 group at Tohoku University{\textquoteright}s Research Center for Neutrino Science. We thank F. Suekane, H. Furuta, and Y. Hino for their assistance in conducting the experiment. We also thank the CYRIC accelerator group for supplying the beam. This work was supported by JSPS KAKENHI Grant Numbers 17J06141 and 26400292, and Grant-in-Aid for Scientific Research on Innovative Areas titled “Unification and Development of the Neutrino Science Frontier” (MEXT KAKENHI 25105002). Funding Information: This experiment was carried out in cooperation with the JSNS2 group at Tohoku University's Research Center for Neutrino Science. We thank F. Suekane, H. Furuta, and Y. Hino for their assistance in conducting the experiment. We also thank the CYRIC accelerator group for supplying the beam. This work was supported by JSPS KAKENHI Grant Numbers 17J06141 and 26400292, and Grant-in-Aid for Scientific Research on Innovative Areas titled “Unification and Development of the Neutrino Science Frontier” (MEXT KAKENHI 25105002).",
year = "2018",
month = apr,
doi = "10.1093/ptep/pty040",
language = "English",
volume = "2018",
journal = "Progress of Theoretical and Experimental Physics",
issn = "2050-3911",
publisher = "Oxford University Press",
number = "4",
}