I am designing an Alpha particle time of flight detector which consists of two scintillators separated by 5cm of vacuum (few Torrs).
The two scintillators are connected to two separate avalanche photodetectors which would generate photons as soon as the Alpha particle pass through the scintillators.
I now need to design a circuit (preferably an analogue integrator) to measure the time interval between those two events to an accuracy of a 0.1ns.
Could anyone help me with this circuit as I am not very much adept in it?
Thank you very much in advance, and feel free to ask me any questions on the design itself.