Develo pments of the target cooling and dosimetry systems for the use of the accelerator boron neutron capture therapy

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New target system for the accelerator boron neutron capture therapy by using water cooling system was developed. The target was tested 6 times using the 3MeV proton beam of the accelerator in National Institute for Radiological Sciences with the same power per unit area and was verified to have enough ability to keep the temperature below about 100 degrees. From these results we can manufacture an actual target system. For the dosimetry system we used new plastic including boron and made verified the possibility of the new chamber system to measure necessary neutrons for boron neutron capture therapy system.