CERN

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Particle physics keeps producing beyond the Higgs boson

    From AAAS, Feb. 16, 2019: The Higgs boson, the once-elusive particle that provides mass to the building blocks of the universe, is the most famous product of the CERN international laboratory, but the lab’s bragging rights extend to a host of innovations, said the lab’s director-general Fabiola Gianotti.

    Taking a collider to the dark energy problem

      With the warmth of holiday cheer in the air, some physicists decided to hit the pub after a conference in December 2014 and do what many physicists tend to do after work: keep talking about physics. That evening’s topic of conversation: dark energy particles. The chat would lead to a new line of investigation at the Large Hadron Collider at CERN. Every second, the universe grows a little bigger. Scientists are using the LHC to try to find out why.

      Designing magnets for the world’s largest particle collider

        From IEEE Spectrum, Jan. 30, 2019: If realized, the Future Circular Collider will produce magnetic fields nearly twice as strong as the LHC and accelerate particles to unprecedented energies of 100 teraelectron volts, compared to the Large Hadron Collider’s energies of 13 TeV. Whereas the magnetic system at the LHC can achieve strengths of 8.3 teslas, the FCC system would be able to achieve 16 T.

        Retired equipment lives on in new physics experiments

        Physicists often find thrifty, ingenious ways to reuse equipment and resources. What do you do about an 800-ton magnet originally used to discover new particles? Send it off on a months-long journey via truck, train and ship halfway across the world to detect oscillating particles called neutrinos, of course. It’s all part of the vast recycling network of the physics community.

        The farmer physicist

          If you want to visit the Pasner family farm, you’ll need a truck with four-wheel drive. You’ll need to traverse 4 miles of bumpy dirt road deep into the countryside of Penn Valley, California. But once you arrive, you’ll be greeted by fields of organic onions and garlic, nestled between rolling grassy hills speckled with oak trees. For physicist Jake Pasner, this will always be home.

          View of Large Hadron Collider

          LHC ends second season of data-taking

          During the last four years, LHC scientists have filled in gaps in our knowledge and tested the boundaries of the Standard Model. Since the start of Run II in March 2015, they’ve recorded an incredible amount of data —five times more than the LHC produced in Run I. The accelerator produced approximately 16 million billion proton-proton collisions — about one collision for every ant currently living on Earth.

          Heavy-ion researchers seize their moment

            During the short heavy-ion run at the Large Hadron Collider at CERN, every moment counts. As one scientist puts it, experimenters have “four weeks to collect all the data we will use for the next three years.” The data arising from LHC’s collisions of heavy nuclei, such as lead, will be used to study the properties of a very hot and dense subatomic material called the quark-gluon plasma.