Hi folks!
I just bought four new-old-stock Philips/Amperex xp2202b type photomultiplier tubes for next to nothing. They're old though, manufacture date seems to be 1984. Otherwise still in original box and wrappers, so prime condition given their age, and the photocathode seems in good condition. My question is, would it be worth the trouble to design a dynode voltage divider and supply for these puppies, or are they a lost cause due to things like helium ingress or other forms of aging over the 30+ years that they've been sitting around in dusty university closets? Anyone here with experience involving PMTs, aging and failure modes who would care to chime in and give me their 2 cents? Mind you, i'm just messing about here, no mission-critical shenanigans, just a scintillation detector, possibly two working in tandem as a coincidence/muon detector.
Thanks!
Th.