- Plastic scintillator
When detecting a muon, we can use a plastic scintillator which consists of the components in the diagram attached. I am trying to understand what exactly the "two-stage amplifier" does which is located in the top left corner in the image attached? I am unable to find any information on it online in regards to the particle detector. I understand what the scintillator and the photomultiplier does, but not sure what the two-stage amplifier does.