Measurements of phantom dose distributions at the Finnish BNCT facility

The Finnish BNCT facility with a new epithermal beam is close to complete.1 The neutron spectrum of the beam were determined by calculations and activation measurements free in air.2 Consequently, as the FiR 1 BNCT beam was renewed, also the new beam model FiR(K63) to be used by the actual dose planning system was created and verified.3 The verification was done by comparison of the calculated and the measured dose distributions in phantoms using different dosimetric methods which together can provide appropriate reliability.