Cern, the collisions in the accelerator Lhc – Scienza & Tecnica – restart

The Large Hadron Collider (LHC), the most powerful particle accelerator in the world that discovered the Higgs boson ten years ago, is ready to enter its third phase of activity, with the resumption of new collisions at an energy from record, which will multiply the opportunities for new discoveries. “We will have a much higher capacity to explore the unknown”, said the director of CERN Fabiola Gianotti.

From 5 July, Gianotti told Ansa, “LHC will operate at unprecedented energy. Each time we jump in energy and increase the intensity of the beams, and produce more collisions, our opportunities are strengthened to discover new particles and new phenomena, but also to measure more precisely the particles we know. I am thinking in particular of the Higgs boson, which is a key particle to understand how fundamental physics and therefore the universe work, “he added.

In addition, the director of CERN specified, “the detectors have also been improved. We therefore have the possibility not only to double the data collected, but to improve the analysis capabilities, thanks to better performance of the detectors and advanced analysis technologies based on Machine Learning. ”

After more than three years of updating and maintenance, on 5 July Cern will kick off the expected ‘Run 3’, during which the accelerator will run continuously for almost four years at a collision energy of 13.6 trillion. electron volts (TeV), providing experiments with unprecedented precision and unparalleled potential for discovery.

All four main LHC experiments have in fact undergone significant improvements: ATLAS and CMS plan to record more collisions in Run 3 than those of the previous two phases combined. The LHCb experiment has been completely updated and expects to increase the data acquisition speed ten times, while ALICE aims to increase the number of recorded collisions by fifty times.

Among the many objectives that could now be within reach of the researchers at CERN in Geneva, in Fabiola Giannotti’s dream drawer is that of “discovering the particle that constitutes the dark matter of the universe. We know that the universe contains about 25% of dark matter and being able to discover the particle that composes it would clearly be a huge step ”, underlined the director of CERN.

In charge of the Atlas experiment at the time of the discovery of the HIggs boson, Fabiola Gianotti still remembers with emotion that day, when exactly ten years ago on 4 July 2012 CERN announced the discovery of the “God particle”: “a fabulous day, of an immense joy, my personal and for the whole community of particle physics, all those who participated and contributed to the enterprise. A work of thousands of physicists, engineers, technicians over several years. For a researcher, there is nothing more rewarding than discovering a new particle. “

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Cern, the collisions in the accelerator Lhc – Scienza & Tecnica – restart

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