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836

Archive: https://archive.today/mTdmp

From the post:

>Today, the Large Hadron Collider (LHC), the world’s most powerful particle accelerator, comes to the end of an extraordinary chapter in its scientific journey. Following its final physics run, the accelerator has been switched off to begin CERN’s Long Shutdown 3 (LS3), a major programme of maintenance, consolidation, upgrades and installation work that will prepare the Laboratory for the High-Luminosity LHC (HiLumi LHC), the next phase in the exploration of the fundamental laws of nature. Since circulating its first beams in September 2008, the LHC has pushed the frontiers of science and technology, becoming one of the most ambitious scientific instruments ever built. The accelerator delivered its first proton collisions in 2009 and rapidly established itself as a unique discovery machine – across three operational periods (Runs 1–3), the LHC delivered unprecedented quantities of data to its experiments.

Archive: https://archive.today/mTdmp From the post: >>Today, the Large Hadron Collider (LHC), the world’s most powerful particle accelerator, comes to the end of an extraordinary chapter in its scientific journey. Following its final physics run, the accelerator has been switched off to begin CERN’s Long Shutdown 3 (LS3), a major programme of maintenance, consolidation, upgrades and installation work that will prepare the Laboratory for the High-Luminosity LHC (HiLumi LHC), the next phase in the exploration of the fundamental laws of nature. Since circulating its first beams in September 2008, the LHC has pushed the frontiers of science and technology, becoming one of the most ambitious scientific instruments ever built. The accelerator delivered its first proton collisions in 2009 and rapidly established itself as a unique discovery machine – across three operational periods (Runs 1–3), the LHC delivered unprecedented quantities of data to its experiments.
[–] 1 pt

The shutdown is for maintenance and swapping out or upgrading sensors/hardware. That's why its LS3, this is the 3rd cycle of doing this.