Physicists compared collisions of two different sets of isobars, which are ions that have the same overall mass but different numbers of protons—zirconium (96Zr), with 40 protons, and ruthenium (96Ru) with 44 protons. The higher proton number (and thus electric charge) in ruthenium should generate a stronger magnetic field during collisions than zirconium (indicated by size of gray arrows). Scientists expected the stronger magnetic field of ruthenium collisions to result in greater separation of charged particles emerging from those collisions than seen in zirconium collisions.
Results from Search for 'Chiral Magnetic Effect' at RHIC
Physicists from the STAR Collaboration of the Relativistic Heavy Ion Collider (RHIC), a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research at DOE’s Brookhaven National Laboratory, presented long-awaited results from a “blind analysis” of how the strength of the magnetic field generated in certain collisions affects the particles streaming out. The experiment was designed to look for evidence of a predicted physics phenomenon known as the “chiral magnetic effect.” It didn’t come out as initially predicted.
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Dr.sc.ing. Torims, representative of Latvia at CERN, Dr Muizniece, Minister for Eduction and Science of the Republic of Latvia, Dr Gianotti, Director-General of CERN, H.E. Mr Hasans, Ambassador Extraordinary and Plenipotentiary, Permanent Representative of the Republic of Latvia to the UNO and other international organisations in Geneva (Image: CERN)
Latvia becomes Associate Member State of CERN
Today, the Republic of Latvia became an Associate Member State of CERN, following official notification that the country has completed its internal approval procedures in respect of the Agreement granting it that status and has acceded to the Protocol on Privileges and Immunities of the Organization.
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Making matter from light: Two gold (Au) ions (red) move in opposite direction at 99.995% of the speed of light (v, for velocity, = approximately c, the speed of light). As the ions pass one another without colliding, two photons (γ) from the electromagnetic cloud surrounding the ions can interact with each other to create a matter-antimatter pair: an electron (e-) and positron (e+).
Collisions of Light Produce Matter/Antimatter from Pure Energy
Scientists studying particle collisions at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy Office of Science user facility for nuclear physics research at DOE’s Brookhaven National Laboratory—have produced definitive evidence for two physics phenomena predicted more than 80 years ago. The results were derived from a detailed analysis of more than 6,000 pairs of electrons and positrons produced in glancing particle collisions at RHIC and are published in Physical Review Letters.
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Electron-Ion Collider Achieves Critical Decision 1 Approval
The U.S. Department of Energy (DOE) has granted Critical Decision 1 (CD-1) for the Electron-Ion Collider (EIC), a one-of-a-kind nuclear physics research facility to be built at DOE's Brookhaven National Laboratory on Long Island. Following DOE's approval of "mission need" (known as CD-0) in December 2019, this announcement marks the completion of the project's definition phase and its conceptual design. Approval of CD-1 provides the authorization to begin the project execution phase, starting with preliminary design.
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The first station of the network on the Greenland ice. The red flags mark underground antennas powered by solar panels (dark rectangles). Credit: RNO-G, Cosmin Deaconu
Chasing cosmic particles with radio antennas in Greenland's ice
In Greenland's ice sheet, a set-up unlike any other in the world will in future be listening for extremely elusive particles from space. The Radio Neutrino Observatory Greenland (RNO-G) is a pioneering project that relies on a new method of detecting very high-energy cosmic neutrinos using radio antennas. The scientists involved in the project have now installed the first antenna stations in the ice at the Summit Station research facility.
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Winners of the CERN Beamline for Schools 2021: Team Teomiztli (above) from the Escuela Nacional Preparatoria Plantel 2 (Mexico City, Mexico / Image: Escuela Nacional Preparatoria Plantel 2); and Team EXTRA (below) from the Liceo Scientifico Statale A. Scacchi (Bari, Italy / Image: Liceo Scientifico Statale A. Scacchi)
Two high-school teams from Italy and Mexico win the CERN Beamline for Schools competition
Two teams of high-school students from the Liceo Scientifico Statale “A. Scacchi” (Bari, Italy) and from the Esculea Nacional Preparatoria “Plantel 2” (Mexico City, Mexico) have won the prestigious CERN Beamline for Schools competition. The prize this year is a trip to the DESY research centre in Hamburg, Germany, in autumn 2021, to carry out their proposed experiments with the support of scientists from CERN and DESY.
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The first stone with the newly unveiled logo of the CERN Science Gateway. Its underlying concept is to anchor the project and its mission to CERN. At the core is a collision, from which the architecture of the iconic building rises. The grey colour combined with red highlights the stability and vibrancy of the project. From left to right: Renzo Piano, Fabiola Gianotti, Antonio Hodgers and John Elkann. (Image: CERN)
CERN lays first stone of Science Gateway
Today, CERN held a first stone ceremony for Science Gateway, the Laboratory’s new flagship project for science education and outreach. Fabiola Gianotti, CERN’s Director-General, John Elkann, Chairman of Stellantis and the FCA Foundation, the main donor, Renzo Piano, architect and founder of Renzo Piano Building Workshop, and Antonio Hodgers, representing the Geneva Canton, were present to mark the successful start of its construction.
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The main gallery of the newly built underground structure for the HL-LHC at Point 1 (Image: CERN)
The High-Luminosity LHC project takes shape at Point 1
With the pure whiteness of its walls, its impeccable cleanliness and its alternating white and blue lights, the new High-Luminosity LHC (HL-LHC) cavern, situated at Point 1 near the ATLAS detector at around 80 metres below ground, could easily pass for a medical facility. However, “it won’t stay that way for long,” smiles Oliver Brüning, HL-LHC project leader: the empty cavern and 300-metre-long service tunnel will soon experience the clutter and bustle of the installation of its technical infrastructure and, further in the future, of the equipment fitting out the upgraded LHC.
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Credit: Rey. Hori
ILC International Development Team publishes the Proposal for the ILC Preparatory Laboratory
An international scientific consensus supports an electron-positron Higgs Factory as the highest-priority next collider, and timely construction of the International Linear Collider (ILC) hosted in Japan is strongly supported by the international community.
Today, the international effort to realise ILC in Japan took another step forward with the publication of the document titled “Proposal for the ILC Preparatory Laboratory (Pre-lab)”. This proposal is prepared by the ILC International Development Team (ILC-IDT) and endorsed by the International Committee for Future Accelerators (ICFA).
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In laser plasma acceleration, an intense laser pulse (red) in an ionised gas drives a bubble-shaped plasma wave consisting of electrons (white). An electron bunch (centre) riding this wave like a surfer is thus accelerated to high energies over shortest distances. The rendering is based on real simulation data from the LUX experiment (picture: DESY/SciComLab).
Plasma acceleration: It’s all in the mix
The LUX team at DESY is celebrating not just one but two milestones in the development of innovative plasma accelerators. The scientists from the University of Hamburg and DESY used their accelerator to test a technique that allows the energy distribution of the electron beams produced to be kept particularly narrow.
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