Scintillator diameter 10 cm.
Comes normally with IN/OUT movement
For beam flux counting and tuning.
Scintillator diameter 8 cm.
Mostly used to strobe spectrometers, profile delay wire chambers and Cerenkov counters
Note that the distinction between XTRI and XTRS has to some extent disappeared over the years.
more information about XSCI new scintillator installation