The temperature rise from this beam was measured by a calibrated thermistor embedded in the core which was then converted to absorbed dose to graphite by multiplying the rise in temperature by the specific heat capacity for graphite and the ratio of cross-sectional areas of the core and beam. 
THERM
Conversion of the measured absorbed dose to graphite to absorbed dose to water was achieved using Monte Carlo calculations with the EGSnrc code. 
EGSnrc code
The air kerma measurements from the free-air chamber were converted to absorbed dose to water using the AAPM TG-61 protocol.



AAPM TG-61 protocol