EG252C tube, giant

[Opcom]

We saved a huge tube, and it says "EG252C". It is about 7" diameter and 24" long. Very cylindrical. Glass except for coaxil base for filament on one end, a metal ring contact in the middle that is like a large washer inside the tube with a 2" diameter hole for the electron beam, and at the other end, the anode which is cylindrical with a roughly hemispherical face. Anode seems to be water cooled. Filament and cathode structure has a flat face with a rectangular window in which can be seen the filament. Speculation is wild.. x-ray tube, some weid triode, a klystron.. Can anyone say what it might be? I am trying to get a picture.

[KE6DF]

The only thing I can find googling is a site that lists it as and xray tube with no further description.

[Opcom]

I agreed with my apprentice that he should take it. He has the time to fiddle with it. I think all I need to know is the filament voltage (most critical) and the necessary anode voltage but the anode voltage could be found experimentally as we have a 30KV transformer. Might not be enough to tickle this monster though. For low duty cycles I don't think we would use the water cooling. The oddest thing about it is that there is no apparent "direction" the x-ray beam would take. Most tubes I have seen (only 6 or 7) have a flat anode that is set at an angle to throw the x-rays in a general direction. I was thinking EG&G, but who knows. Where is that picture??

[wb1aij]

[The oddest thing about it is that there is no apparent "direction" the x-ray beam would take. Most tubes I have seen (only 6 or 7) have a flat anode that is set at an angle to throw the x-rays in a general direction.

Is there such as a mirror for X-rays? What type of material or surface could it be?

[Todd, KA1KAQ]

Size and shape sounds similar to an old RADAR tube we had in school. Top was flat though, IIRC. At least two large pigtails exiting the base, and a collar around it to hard mount it in place.

[Opcom]

Here are some pictures finally. The anode is a hollow cylinder. I suppose the beam enters and stikes a target which I cannot see. Well I guess it will be a curio unless some data shows up. The box has 6635 4320 6004 written on it in pencil.