An upgraded LHC
Why dig a whole new accelerator ring when the Large Hadron Collider already exists in a perfectly good 17-mile tunnel? The High Luminosity LHC (HL-LHC) is a proposed upgrade
for the existing LHC facility. Included in the upgrade: new, more powerful beam magnets to replace some of those that are currently deteriorating little by little each time a particle collision releases a burst of radiation and hardware updates to the ATLAS and CMS detectors. The upgrade would not push the LHC's collision energy all that much higher, but it would increase its luminosity--the number of collisions it can achieve at a given time--tenfold, increasing the amount of data produced by the LHC by the same amount.