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measurement with a solid state detector (diode)
energy dependence & fluence perturbation
≠1
for
detector Ø <A
Challenge: perturbation factors!
A
A
p
ref
det E,
sensitivity of the
detector
Small fields: relative dosimetry - field size factor, S
cp
( )
(
)
(
)
(
)
(
)
A
A
A
A
p
p
z AM
A,z M
z AD
A,z D
AS
ref
ref
det
det E,
ref
ref
ref
ref
ref
ref
cp
,
,
=
=