Yes, these public displays (internally called vistars or fixed displays) are a real-time stream. Essentially the same that's being broadcasted in the Control Center (the CCC), but at a (much) lower frame rate.
You can navigate and find others, like the ones focused on the luminosity that the experiments are getting (not yet useful), or on the injector accelerators.
What kind of tools are used to build those dashboards and data streaming systems? Anything you'd want to use for regular system monitoring? Looks like part of it might be Gnuplot?
We had a powerful framework to create graphical elements that display values from the hardware.
The previous version of these displays was teletext (do you remember what that is?), with some analog signals sometimes directly overlayed onto them. So, considering we came from that, Java Swing is quite a technology leap :)
> (I was working on the vistar project for a year.)
Nice work! I used to work in the ROC at Fermilab ~5 years ago (CMS datataking). I'm astounded by how many people I run into who have worked on the LHC data side.
