A comparative study of the high fluence neutron radiation effects on the properties of plastic scintillator UPS-923A for the TileCal of the ATLAS detector

V Baranova, Yu I Davydova, R Erasmusb,c, C O Kurebad , J E Mdhlulie, B Melladoe, f , G Mokgatitswaned,1, E Sideras-Haddade,c, I Vasilyeva, P N Zhmuring aJoint Institute for Nuclear Research, Dubna, Russia, 141980 bSchool of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa cDST-NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg 2050, South Africa dDepartment of Physics and Astronomy, Botswana International University of Science and Technology, Private Bag 16, Palapye, Botswana eSchool of Physics and Institute for Collider Particle Physics, University of the Witwatersrand, Johannesburg, Wits 2050, South Africa f iThemba LABS, National Research Foundation, PO Box 722, Somerset West 7129, South Africa gInstitute for Scintillation Materials, Kharkov, Ukraine E-mail: 1gmokgatitswane@gmail.com