The World’s Newest Atom Smashers Just Took Its First Spin

Scientists may soon be able to get answers about the fundamental nature of our universe, thanks to the newest atom smasher machine.

3. 9. 16 by Joi Matthew
Wall321
Image by Wall321

Japan’s SuperKEKB accelerator passed a major milestone. In what is something known as “first turns,” this gigantic machine managed to circulate a beam of electrons and positrons in opposite directions for the very first time. Both were moving very close to the speed of light, but this happened at different times and was not simultaneous.

In other words, it hasn’t come fully online just yet.

The Pacific Northwest National Laboratory notes that the first beam of positrons was successfully circulated through the accelerator’s main ring on February 10. On February 26th, a beam of electrons did the same thing in the opposite direction.

Why is this important?
Credit: James Fast/PPNL

Scientists would like to have these particles collide one day, and in order to get to that point, obviously, the accelerator has to be able to accelerate the particles in both directions as close to the speed of light as possible.

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The energy densities that are created when these collisions occur cause ordinary matter to melt into its constituent parts—quarks and gluons. This allows us to interrogate the basic constituents of matter–the fundamental particles of the Standard Model. In the end, such experiments could reveal much about the fundamental physics of our universe.

In the next few years or so, the team plans to turn both beams on at the same time so that the particles smash into one another.

The machine being used, Japan’s SuperKEKB, is designed to produce 40 times more collisions than its predecessor. It will use the Belle II detector to observe these collisions, which was developed by over 600 scientists from 23 different countries.

The Belle II detector looks like a really big camera that can record about 300,000 collisions per second. This is not an easy feat given that the beam it is essentially “photographing” is only 100 nanometers thick.

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If the team is successful, they will be able to analyze the data collected from the collider. These data may contain information that we have been questioning for years, such as why is there an abundance of matter, despite the fact that matter and anti-matter should have in fact cancelled each other out. Getting some answers may help us further understand how the Universe was created, and how do we keep existing.

Still, it may take years for scientists to actually have a small glimpse into the data that the collider will provide. For the meantime, we’ll keep questioning and finding ways to get answers.


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