CERN

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Last summary: Apr 24, 2026

CERN’s full-scale test stand enters the powering phase

Here are the key points from the transcript: * **IT String Facility:** This is a test stand for the High-Luminosity LHC project at CERN.

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BASE experiment at CERN succeeds in transporting antimatter

Scientists have successfully transported antimatter, specifically antiprotons, out of a facility for the first time. This achievement opens up new possibilities for precision measurements outside of CERN. Antiprotons are antiparticles of protons, meaning they are identical but have opposite properties like charge or magnetic moment. They do not naturally exist in the observed universe, making their production, storage, and transport challenging. The transport involved 92 antiprotons in a Penning trap, which had to be kept autonomous, cold, and on batteries while maintaining a vacuum. Although 92 antiprotons are a minuscule amount compared to the protons in a grain of salt, these particles are sufficient for ultra-high precision investigations due to the sensitivity of the experiments. This technology acts as a new type of precision microscope for antimatter, enabling fundamental symmetry tests and searches for physics beyond the standard model, potentially explaining why the universe is predominantly made of matter rather than antimatter.

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What's inside the BASE-STEP antiproton trap?

This is a summary of the provided content about the base step portable antiproton trap, which is used to transport antiprotons around the CERN site. The trap's vacuum system, housed within a transport frame, contains essential elements for storing and transporting antiprotons. The trap system is encased in a strong superconducting magnet and consists of ring-like electrodes that control and store the antiprotons. Antiprotons are injected from the antimatter factory's decelerator chain through a small transfer channel. High-voltage pulses applied to electrodes at the trap's ends confine the antiprotons, causing them to move back and forth.

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