Friday , September 24 2021

This mini particle accelerator delivers small lasers with big promise



Particle accelerators are very interesting in exploring the subject of the universe, but in our view, they are huge vehicles – in some cases, surrounding cities. Researchers have developed a much smaller version of the advanced laser that could be just as useful as its larger counterparts.

The particle accelerator in question is a Wakefield plasma accelerator that produces short, intense flashes of electrons, and the laser it uses is the Free Electron Laser (FEL), which uses its own light to analyze atoms, molecules and dense material. incredible accuracy

While this scenario has been tested before, the resulting laser light was not intense enough to benefit smaller scales. Here, the researchers were able to keep the assembly sealed in several life-size chambers, amplifying the final electron beam with a laser, increasing its intensity 100 times in the final stage of the process.

“We demonstrated the potential of a new technical path with an ultra-high-capacity accelerator laser electron accelerator, reducing the size of the device from a kilometer level to 12 meters.” Says physicist Ling Yuxin of the Chinese Academy of Sciences (CAS).

The team faced several challenges in minimizing while keeping the technology practical. For example, they had to reduce electron energy fluctuations by only 0.5%, so various improvements had to be made to control the acceleration of electrons and ensure smooth motion.

The electrons are emitted through an evacuated tube and three magnetized waveforms that interfere with the electrons and emit light through their magnetic fields. The emitted light repels the electrons, pushing them into smaller groups, creating a laser beam.

Increasing the electric field passing through the chimneys while maintaining stability is one of the reasons why the installation is as compact as before. This means that many of the advantages of particle accelerators can be applied to experiments conducted in a single room.

“FEL features, including ultra-high-resolution time and space and ultra-brightness, deliver ultra-high-resolution multi-view 3D,” says physicist Wang Wentao of CAS.

The new setup is not only smaller than the standard particle accelerator and FEL configuration, but also cheaper – opening up all possible new applications, even if the device isn’t nearly as powerful as all versions.

In fact, it will take a lot of time and a lot of research to prepare a new particle accelerator and FEL for practical laboratory experiments, but scientists have shown that it is possible to reduce the entire system.

While some questions remained about the low compatibility of the accelerator and laser with our results from larger versions, Other Experts quickly praised the new research for its ability to do so. There may be many new and exciting discoveries along the way.

“The application of potential technologies is likely to greatly expand man’s understanding of the mystery of life and the revolution of living beings,” he said. says Wentao.

Search published nature.


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