Speaker
MASAHARU NOMACHI
Description
Scintillator is one of popular detectors on radiation measurements.
Energy deposit in a scintillator causes scintillation light. Photo
detectors are key component of the measurements. Scintillation light
is very weak. Therefore, photo detectors are necessary to be highly
sensitive. They may need to detect a small number of photons.
The signal caused by one photon is too small to be amplified by
electric circuit. Photo detectors for scintillators are required to
“multiply”. Photo Multiplier Tube (PMT) and Silicon Photo Multiplier
(SiPM) will be introduced. The feature of those “multiplication” are
also discussed.
