Spatial distributions of residuals produced inside a spallation target

Authors: Pohorecki, Wladyslaw; Horwacik, Tomasz; Janczyszyn, Jerzy; Taczanowski, Stefan; Bamblevski, Valentin P.; Gustov, Sergey A.; Mirokhin, Igor V.; Molokanov, Aleksander G.; Polanski, Aleksander

Source: Radiation Protection Dosimetry, Volume 115, Numbers 1-4, 20 December 2005 , pp. 648-651(4)

Publisher: Oxford University Press

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Abstract:

The spallation target model of an accelerator driven system (ADS), consisting of six 5cm thick and 16cm in diameter Pb segments, was constructed. Three sets of 17 Bi samples (1/2 inch in diameter and 1 mm thick) were placed in 3 Pb disc-shaped holders inside the target at 5, 10 and 15 cm from its front. After irradiation with 660 MeV proton beam γ-spectra of radioisotopes produced in Bi were collected several times for each sample with the use of HPGe detectors in order to identify the radioisotopes and to determine their absolute activities. Their spatial distributions were then compared with respective values obtained in the calculations made with the use of FLUKA and/or MCNPX code. A fair agreement with the experiment has been observed.

Document Type: Research article

DOI: http://dx.doi.org/10.1093/rpd/nci005

Publication date: 2005-12-20

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RPD publishes peer-reviewed papers covering all aspects of personal and environmental dosimetry and monitoring for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring and accident dosimetry and dosimetry related to the protection of patients.