Dose 2016

Organic scintillator (W1 Standard Imaging)

Irradiation produces luminiscence

Cerenkov light and luminiscence have different wave lenghts

Light is guided through optical fiber

to a photomultiplier

The signal is proportional to absorbed dose

BUT

When we irradiate optical fiber Cerenkov light is produced

Spectral discrimination method

Cerenkov light depends on the length of fiber irradiated, not proportional to dose