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Calibration of MU-chamber
MU-chamber
is a transmission ionization chamber
electronics generates ‘counts’ (MUs)
after a pre-set charge Q
MU
measured
Calibration of MU-chamber:
electronics is tuned such that
1MU corresponds with
a dose of 1 cGy in H
2
0
in
reference
conditions
dose measured
with
calibrated
ionization chamber