PMT FEU-84-3
From GlueXWiki
The PMT are russian 12-Stage tubes of the type PEU-84-3 The tube outer diameter is 1.339" or 34.01mm and are about 100mm long (without the pins) The current desing of the base has an outer diameter of 1.5" or 38.1mm with an length of about 157mm including the PMT-connector ring and the aluminum end cap.
