MONTE CARLO SIMULATION OF NEUTRONICS START-UP TESTS AT CHINA EXPERIMENTAL FAST REACTOR (CEFR)Jiwon Choe, Chirayu Batra, Vladimir Kriventsev and Deokjung LeeEPJ Web Conf., 247 (2021) 10008DOI: https://doi.org/10.1051/epjconf/202124710008