But the shut-down schedule also includes upgrades to all four of the LHC's detectors, the shielding of electronics, and even an overhaul of the ventilation system of the tunnel that houses the main acceleratorring.
The crucial point, and the reason for the excitement, is that both ATLAS and CMS (which are located in different parts of the ring-shaped accelerator tunnel of the LHC) have come up with the same results.