https://science.howstuffworks.com/cern-wants-to-build-bigger-badder-particle-collider.htm this could be the reason for it being shut down possibly . Maybe they need higher speeds and more power to punch through. Something of interest is that they originally there was a collider to be build in texas but it was haulted and they filled in all the tunnels, seems like a lot of extra work to fill them in. https://en.wikipedia.org/wiki/Superconducting_Super_Collider .