CERN researchers led to the collision which they hastened closer to to for just over 60 years, with the commissioning on 24 November 1959 of CERN’s first large particle accelerator: the Proton Synchroton ( ).
At that time, the machine made it possible to produce protons whose energy reached 25, which exceeded the expectations of the creators of PS and made the instrument the most powerful particle accelerator in the world. The design of the engine is so clear that it still operates today and serves as a pre-accelerator (there are several, as explained in the video above) to the beams of . With him CERN researchers discovered the and the intermediaries of . Versatile, this synchrotron is used both for acceleration only such as those sulfur, and allows you to explore the secrets of .
A documentary on the discovery of W bosons, at CERN, in the early 1980s. These bosons are so large due to the supposed existence of the Brout-Englert-Higgs mechanism. Here are some of the keys to understanding how their discovery happened, keys that are still relevant to understanding the LHC today. It talks about LEP, the electron-positron collider that occupied the LHC tunnel before it. © CERN
Crashes at 13.6 TeV this summer for Run 3
However, this Monday, April 25, 2022, the heirs of the engineers andresponsible for the success in 1959 announced that they broke a world record for the energy of protons accelerated by one of the last scientific and technological cathedrals in the noosphere with beams of protons reaching a speed of 6.8 TeV , ie 6,800 GeV!
They also announced that the first collision of these beams with the LHC-equipped detectors should occur this summer, following final adjustments and engine inspections. So we have at that time 13,600 GeV that can produce many new protons in each collision between two protons since this unit of energy and because of the relationship ofin equivalence energy, a proton has a mass of about 1 GeV. Many other particles are actually generated in each collision and it is now expected that by reaching the new threshold of 13.6 TeV the particles in which is too heavy to eventually do, though perhaps, but it turns out to be much less likely, mini quantum black hole and other effects of .
Let’s hope that the LHC’s third data collection campaign, Run 3, which starts soon and lasts for several years, is full of surprises.
The LHC record is on April 25, 2022. To get an accurate French translation, click on the white rectangle at the bottom right. English subtitles should be visible immediately. Then click the nut to the right of the rectangle, then “Subtitles” and finally “Automatic Translation”. Select “French”. © CERN
The LHC came out of 3 years of sleep to hunt for new physics
Article onpublished on 04/25/2022
The Large Hadron Collider, the LHC, once again orbits protons in its 27 -kilometer -circular ring. There are still tests and changes to be made, especially to the detectors, but in a few months the search for new particles and a newperhaps allows to solve the enigmas of and in start again.
In a few months, we may be able to celebrate the 10th anniversary, on July 4, 2022, of announcing the discovery of the Brout-Englert-Higgs boson with the LHC, which has crowned the work more than 50 years ago. past some. at the Nobel Prize in Physics, some of them have already died, asand Murray and others very much alive, such as .
Granted, much more is expected of the LHC, such as makingand particles of dark matter. It hasn’t happened yet and all hope hasn’t been lost on that. .
The world’s largest and most powerful particle accelerator has started again after a hiatus of more than three years for maintenance, consolidation and upgrades. On April 22, at 12:16 p.m., two proton beams circled the 27-kilometer ring of the Large Hadron Collider in opposite directions, with their injection energy of 450 billion electron volts (450 GeV). To get an accurate French translation, click on the white rectangle at the bottom right. English subtitles should be visible immediately. Then click the nut to the right of the rectangle, then “Subtitles” and finally “Automatic Translation”. Select “French”. © CERN
Protons at 450 GeV, but not yet collided
But for that, new proton collisions with giant detectors in the 27-kilometer ring of the Large Hadron Collider are needed. However, CERN recently announced that after a hiatus of several years spent working to improve the LHC’s accelerators and detectors, the circulation of proton beams is continuing, even before questioning the removal bag. data to track new particles.
It occurred on April 22, at 12:16 pm CEST, with two proton beams orbiting in opposite directions along the ring, the injection energy being 450 billion electronvolts (450 GeV) per particle in these beams. , which in theory makes it possible. to make for example about 900 protons for each collision between two particles (the mass of a proton is approximately 1 GeV, according to the units that express Einstein’s relationship between energy and mass).
A partial version of the previous video directly in French. © CERN 2022
” These beams travel the injection energy and contain a small number of protons. High-intensity, high-energy collisions occur in a few months, but these first beams mark a successful restart of the accelerator after intense work done during the long shutdown. commented on this event Rhodri Jones, Head of the Beams Department at CERN.
” The machinery and equipment underwent significant improvements during CERN’s second long shutdown of the accelerator complex ”, the LHC itself went through an extensive consolidation program and is now operating at higher energy. Thanks to major advances in the injector complex, it will provide a wealth of data on upgraded LHC experiments. », Explains, on the other hand, in a press release from Cern Mike Lamont, director of accelerators and technology at the European laboratory.
For the record, a presentation at CERN. © CERN