April 13, 2024

If Dark Matter is Made of Axions, This Could be the Detector That Finds Them

As weve kept in mind in plenty of other posts, science also moves on by constraints. Comprehending the limits of a physical phenomenon assists to develop much better methods of searching for it, especially in its absence. Dark matter is an archetype of a missing out on phenomenon, but there are plenty of prospective descriptions for it. One of them is referred to as the axion, which was originally developed as a hypothetical particle that could plug a hole in the Standard Model of particle physics however could also resolve the problem of dark energy. If they in fact exist, that is. Now a new experiment from scientists at CERN can assist the scientific neighborhood much better define where to look for those axions.

Part of the problem with looking for axions is how extensively varied their properties could potentially be. Both their strength of interaction with other particles and their mass, two of the most essential parts of any particle in the basic model, are up for dispute at this moment. And to cover that numerous possibilities, physicists need to look all over the location for them.
They usually concur on among the methods to do so, however– axions can turn into photons if they undergo a strong enough magnetic field. And photons can be spotted. Most axion detectors consist of powerful magnets and photodetectors, and one of the most capable is the CERN Axion Solar Telescope (CAST) experiment.

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Most axion detectors consist of effective magnets and photodetectors, and one of the most capable is the CERN Axion Solar Telescope (CAST) experiment.

Another UT video on how were looking for it.
Considering that it is unclear what frequency of photon axions would become at the magnetic field strengths supplied by CAST-CAPP, the scientific group needed to monitor a large range of possible frequencies, which took almost 2 complete years. The group likewise had to get rid of prospective sound contamination, such as that from 5 GHz cordless signals..
Sadly, even after that, there were still no indications of axions. But, as stated at the start of the short article, even an absence of evidence for something can help move science forward. Researchers can now definitively narrow down the maximum possible strength of an axions interaction with photons and tailor their experiments appropriately. CAST, in all its different types, isnt done with its mission.
Discover more: CERN– CAST-CAPP inches more detailed to axion dark matterUT– If Axions are Dark Matter, weve got brand-new Hints About Where to Look for ThemUT– A Worldwide Search for Dark Matter Fails to Turn up a Signal for This Mysterious ParticleUT– Is Dark Matter Made of Axions? Black Holes May Reveal the Answer.
Lead Image: Image of the CAST experiment.Credit– CERN.
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It was at first created to look at axions that might be coming from our own Sun. Their modifications resulted in the magnet being capable of detecting axions that would have developed in the dark matter halo that surrounds the Milky Way.

UT video on that most evasive of all substances– dark matter
CAST is generally a huge metal tube with a really strong magnet called a helioscope and various sort of light detectors within it. It was initially developed to look at axions that could be coming from our own Sun. Far, it has failed to find any, however the scientists working on the experiment came up with a minor modification that allowed them to take a look at even more information.
Their adjustments resulted in the magnet can discovering axions that would have established in the dark matter halo that surrounds the Milky Way. This is another possible source of axions, however one that other experiments had not yet explored. The next experiment, called an axion haloscope, or CAST-CAPP, started collecting information in September 2019..

One of them is known as the axion, which was originally developed as a theoretical particle that might plug a hole in the Standard Model of particle physics however might likewise fix the issue of dark energy. Now a new experiment from researchers at CERN can assist the clinical community better define where to look for those axions.