World’s Largest Particle Smasher Halts for Upgrade to Boost Hunt for Dark Matter

The world's most powerful particle accelerator, the Large Hadron Collider (LHC), is ceasing operations for a significant four-year renovation. This extensive upgrade aims to dramatically increase its collision capacity, bolstering the ongoing quest to unravel one of the universe's most profound mysteries: dark matter.

The LHC, a 27-kilometer circular tunnel located near Geneva at Europe's physics laboratory CERN, has previously been instrumental in proving the existence of the Higgs boson. The facility propels particles to extreme energies before smashing them together. Starting Monday, all activity will halt as the device undergoes enhancements designed to boost the precision and intensity of these particle collisions.

Rebranded as the High Luminosity LHC (HL-LHC), the upgraded accelerator is slated to commence operations in June 2030 and continue for approximately a decade. Project chief Markus Zerlauth described this as a pivotal moment, ushering in a new phase for physics research with numerous unanswered questions and potential discoveries awaiting.

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This is a very important moment. From Monday, we will be entering a new phase. We still have lots of physics questions without answers. There are still many discoveries to be made.

The primary goal is to amplify the "luminosity", the total number of collisions within a given period, by a factor of ten compared to the current LHC. This ambitious upgrade carries an estimated cost of 1.2 billion Swiss francs ($1.5 billion), funded by CERN member fees and contributions from countries including the United States, Japan, Canada, and China. The renovation involves replacing 1.2 kilometers of tunnel components and installing new superconducting magnets to concentrate particle beams more effectively.

Upon completion, the HL-LHC anticipates between 140 and 200 collisions each time particle packets meet, a substantial increase from the current 60. This will enable the collection of up to 100 times more data. The sheer volume of collisions, expected to reach billions per second, will necessitate the use of artificial intelligence systems to select the most promising events for recording. However, researchers emphasize that AI will serve as a powerful tool to aid physicists, not replace them, in analyzing the vast datasets generated by the HL-LHC.

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It is a powerful tool that helps us make better use of the data.