5 ms·
It's kind of confusing, but I take it many of these have already been solved? For example, one picture is subtitled, "We have no sense of scale for this - Is it
by pierrec 12y ago
It's kind of confusing, but I take it many of these have already been solved? For example, one picture is subtitled, "We have no sense of scale for this - Is it some kind of pipe?", and clicking on it leads you to a precise description of the pipe's role and a gallery containing an actual scale photo:
https://cds.cern.ch/record/1765880/files/70-3-376.jpg?subformat=icon-1440 https://cds.cern.ch/record/1765880/files/70-3-376.jpg?subfor...
("The grooves allowed circulation of the cooling fluid, in this case helium" - that's some pretty serious cooling)
- timr 12y agoThe BEBC was a giant cryostat, full of liquid hydrogen: http://en.wikipedia.org/wiki/Big_European_Bubble_Chamber http://en.wikipedia.org/wiki/Big_European_Bubble_Chamber My guess is that the cooling wasn't for heat related to the power itself (though perhaps), but to act as a sort of "temperature lock" for the entry point of an outside line. If heat can get in through the openings in the cryostat, you risk boiling off the contents. So you surround the line with something colder than liquid hydrogen, and ensure that the line inside the cryostat isn't warmer than the contents.