PMT Aging Experiment
About one month ago we received a new 4th generation PMT (8C28R3) from CERN
We proceeded to test its aging characteristics
The new PMT was pulsed at a number of different frequencies for one week
The tests on this PMT ran for time intervals of approximately 24 hours
During our testing, the PMT experienced an equivalent of 50 years of running at ATLAS
Important Quantities: Npe and the Gain