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Thursday, November 14, 2024

Accelerated muons deliver next-gen particle colliders nearer to actuality



Muons are getting a transfer on. 

In a step towards new forms of particle physics experiments, scientists cooled after which accelerated a beam of muons. The subatomic particles, heavy cousins of electrons, may very well be accelerated and slammed collectively at future particle colliders in hopes of unlocking physics secrets and techniques. However first, scientists have to determine the right way to give muons a pace increase.

Counterintuitively, which means first slowing muons down. Muons in particle beams initially go each which method. To make a beam appropriate for experiments, the particles have to be first slowed after which reaccelerated, all in the identical route. This slowing, or cooling, was first demonstrated in 2020 (SN: 2/5/20). 

Now, scientists haven’t solely cooled muons but additionally accelerated them in an experiment on the Japan Proton Accelerator Analysis Complicated, or J-PARC, in Tokai. The muons reached a pace of about 4 p.c the pace of sunshine, or roughly 12,000 kilometers per second, researchers report October 15 at arXiv.org.

The scientists first despatched the muons into an aerogel, a light-weight materials that slowed the muons and created muonium, an atomlike mixture of a positively charged muon and a negatively charged electron. Subsequent, a laser stripped away the electrons, forsaking cooled muons that electromagnetic fields then accelerated.

Muon colliders may generate greater vitality collisions than machines that smash protons, that are themselves made up of smaller particles known as quarks. Every proton’s vitality is divvied up amongst its quarks, that means solely a part of the vitality goes into the collision. Muons don’t have any smaller bits inside. And so they’re preferable to electrons, which lose vitality as they circle an accelerator. Muons aren’t as affected by that concern due to their bigger mass.

Along with colliders, muon beams are helpful for experiments comparable to measuring the particles’ magnetic properties, a topic that has confounded physicists (SN: 8/10/23).


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