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NEUTRON FLUX DISTRIBUTION IN THE RADIOISOTOPES TARGET ROOMS AND MAZE IN SYRIAN CYCLOTRON
Kh Haddad1, A H Al Rayyes2, A Al-Homyed1
1Protection & Safety Department, Atomic Energy Commission, PO Box 6091, Damascus, Syria.
Radiation Protection Dosimetry
|April 30, 2019
Summary
This study measured neutron flux in a Syrian cyclotron using gold foils. Results show maze structures effectively reduce neutron flux, aiding radiation protection and identifying radioactive hot spots in medical isotope production.
Area of Science:
- Nuclear Physics
- Radiochemistry
- Medical Isotope Production
Background:
- Accurate measurement of neutron flux is critical for optimizing medical isotope production.
- Understanding neutron flux distribution is essential for radiation safety in cyclotron facilities.
Purpose of the Study:
- To measure thermal, epithermal, and fast neutron fluxes during the production of isotopes like Fluorine-18, Iodine-123, Thallium-201, and Gallium-67.
- To determine the neutron flux distribution around production targets in a Syrian cyclotron.
- To evaluate the effectiveness of maze structures in neutron moderation.
Main Methods:
- Utilized gold activation foils for neutron flux measurement.
- Analyzed neutron flux distribution around the targets.
- Assessed the thermalization effect of maze structures on fast neutrons.
Main Results:
- Quantified thermal, epithermal, and fast neutron fluxes in isotope production units.
- Demonstrated that maze structures significantly reduce fast neutron flux (by four orders of magnitude).
- Mapped neutron flux distribution around production targets.
Conclusions:
- The study provides crucial data for optimizing radioactive hot spot identification in medical centers.
- Findings support the development of enhanced radiation protection strategies in cyclotron facilities.
- The effectiveness of maze structures in neutron attenuation is confirmed.
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