Investigation of radiation fields outside the Sub-Critical assembly in Dubna
| Autor: | Waclaw Gudowski, A. Polanski, V. N. Shvetsov, A. Lopatkin, Per Seltborg |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
Models Statistical Radiation Radiological and Ultrasound Technology Construction Materials Nuclear engineering Public Health Environmental and Occupational Health Nanotechnology General Medicine Radiation Dosage Russia Equipment Failure Analysis Radiation Protection Nuclear Reactors Radiation Monitoring Electromagnetic shielding Computer-Aided Design Sub critical Computer Simulation Radiology Nuclear Medicine and imaging Particle Accelerators Striate cortex Monte Carlo Method Opioid-Binding Cell Adhesion Molecule |
| Zdroj: | Radiation Protection Dosimetry. 116:449-453 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | The radiation fields outside the planned experimental Sub-critical Assembly in Dubna (SAD) have been studied in order to provide a basis for the design of the concrete shielding that cover the reactor core. The effective doses around the reactor, induced by leakage of neutrons and photons through the shielding, have been determined for a shielding thickness varying from 100 to 200 cm. It was shown that the neutron flux and the effective dose is higher above the shielding than at the side of it, owing to the higher fraction of high-energy spallation neutrons emitted in the direction of the incident beam protons. At the top, the effective dose was found to be -150 microSv s(-1) for a concrete thickness of 100 cm, while -2.5 microSv s(-1) for a concrete thickness of 200 cm. It was also shown that the high-energy neutrons (10 MeV), which are created in the proton-induced spallation interactions in the target, contribute for the major part of the effective doses outside the reactor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|