Design and construction of a thermal neutron beam for BNCT at Tehran Research Reactor.
An irradiation facility has been designed and constructed at Tehran Research Reactor (TRR) for the treatment of shallow tumors using Boron Neutron Capture Therapy (BNCT). TRR has a thermal column which is about 3m in length with a wide square cross section of 1.2×1.2m(2). This facility is filled with removable graphite blocks. The aim of this work is to perform the necessary modifications in the thermal column structure to meet thermal BNCT beam criteria recommended by International Atomic Energy Agency. The main modifications consist of rearranging graphite blocks and reducing the gamma dose rate at the beam exit. Activation foils and TLD700 dosimeter have been used to measure in-air characteristics of the neutron beam. According to the measurements, a thermal flux is 5.6×10(8) (ncm(-2)s(-1)), a cadmium ratio is 186 for gold foils and a gamma dose rate is 0.57Gy h(-1).
['Kasesaz|Yaser|Y|', 'Khalafi|Hossein|H|', 'Rahmani|Faezeh|F|', 'Ezzati|Arsalan|A|', 'Keyvani|Mehdi|M|', 'Hossnirokh|Ashkan|A|', 'Shamami|Mehrdad Azizi|MA|', 'Amini|Sepideh|S|']
D016754:Boron Neutron Capture Therapy D017076:Computer-Aided Design D004867:Equipment Design D019544:Equipment Failure Analysis D007492:Iran D009502:Neutrons D009688:Nuclear Reactors D011829:Radiation Dosage D011835:Radiation Protection D011874:Radiometry D012542:Scattering, Radiation
Tehran Research Reactor TLD700 dosimeter BNCT thermal irradiation facility Foil activation method