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Sensitivity, calibration & energy response:
Our calibration coeff. (inverse of dosimeter A.D. sensitivity)
actually comprises 2 parts:
•
we define the
absorbed dose energy dependence
of the detector as the ratio
of dose to water per unit dose to the detector at a given beam quality,
This depends on physical properties and radiation quality (cross
sections) and detector geometry.
It can be calculated via MC!
•
We define the
intrinsic energy dependence
of the detector as the ratio of dose
required to be absorbed to produce a unit signal
This depends mainly on the physical process underlying the conversion of
dose to the measured signal (and hence LET).
It can only be measured!
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