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TY - UNPB AU - Rascvetalov, Ja.N. AU - Britvich, G.I. AU - Krupny, G.I. AU - Maslov, M.A. AU - Peleshko, V.N. AU - Savitskaya, E.N. ED - Kuzin, Maksim V. ED - Schaa, Volker RW TI - On the Formation of Induced Radioactivity on the U-70 Proton Accelerator J2 - Proc. of RUPAC2018, Protvino, Russia, 01-05 October 2018 C1 - Protvino, Russia T2 - Russian Particle Accelerator Conference T3 - 26 LA - english AB - Global induced radioactivity levels on the main ring of proton 70 GeV accelerator (U-70) were estimated. Modeling results of induced radioactivity accumulation on the typical particle canal downstream internal target by Monte Carlo method are given. The wide set of various material specimens was espoused during one U-70 run in vicinity of internal target and specific radioactivity of identified long-lived nuclides was measured. Decay curves of ambient dose and specific radioactivity were calculated and analyzed for all activated specimens. Some fragments of U-70 equipment from radioactive waste storage also were investigated and specific radioactivity of their long-lived nuclides were measured. Unexpectedly 44Ti with 60 years half-life was identified in some cooper and stainless steel fragments. Production cross sections of 44Ti (and other nuclides) on copper were evaluated after irradiation by 50 GeV protons. These data can be used to provide radiation safety when working with radioactive elements of accelerator equipment, as well as storing and disposing of radioactive waste. PB - JACoW Publishing CP - Geneva, Switzerland ER -