Abstract:
This study evaluates the radioactive material produced in the concrete shield due to secondary thermal neutrons as a result of the bombardment of heavy ions on the copper target. Using the FLUKA simulation code, we have investigated the induced activation inside concrete resulting from the bombardment of heavy ion beams (H, He, C, O, Ne, Si) with an energy of 500 MeV for the duration of up to 24 hours. The range of these different ions in the copper target was determined using the SRIM code, and the targets' dimensions were adjusted accordingly. The resulting total activity induced in the concrete was measured and plotted against a cooling time difference of 2 hours. It was found that the proton beam had the highest activity, while the helium ion exhibited the lowest activation. Numerous radioactive isotopes were detected, including (55Fe, 53Mn, 41Ca, 40K, 39Ar, 36Cl, 26Al, 22Na, 14C, 10Be, and 3H), each with varying half-lives in years. These isotopes have possessed long half-lives and could be hazardous for workers directly involved with accelerators. Induced isotopes having shorter half-lives havebeen neglected because of little concern. Furthermore, the study assessed the activity of different isotopes at various cooling rates within concrete. Managing the concrete's activation poses waste management challenges, prompting the need for radiation safety guidelines during routine operation, maintenance, and decommissioning. The study's insights can offer crucial data for facility maintenance, repair, and dismantling, providing predictions of radioactive materials in the concrete based on cooling time after operation and termination.
Page(s):
309-309
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
Concrete
,
induced radioactivity
,
isotopes
,
FLUKA
,
Heavy ions