The scientist lost his lab because the magnetic field was 120,000 times stronger than the magnet exploded

With a bang, the laboratory dissipated before a strong 1,200 Tesla magnetic field.

Earlier this year, researchers at the University of Tokyo created the most powerful controlled magnetic field in history. By the way, they also accidentally blew up the whole lab in an error test.

The specific study published on Review of Scientific Instrument states that the magnetic field was created to test the new transmitter system. Researchers are looking to achieve a strong 700 Tesla magnetic field, but the machine they make is stronger than they thought: it reached 1,200 Tesla . For comparison: the magnetic field in the magnet attaches to the refrigerator's surface, the blackboard / greenboard is only 0.01 Tesla.

This is the strongest magnetic field ever created in a controlled environment of a laboratory. That is to say, because it is not the strongest magnetic field in technical history we know. In 2001, Russian scientists created a strong magnetic field of 2,800 Tesla.

In both trials from Japan and from Russia, they all use a technique called electromagnetic flux-compression , which translates as electromagnetic flow compression . It will create a maximum point in the magnetic field by suddenly pressing the magnetic field down to a smaller size. Compression of electromagnetic currents has been around since the 1940s, but in the early days, scientists used a large amount of TNT to create an explosion large enough to force a magnetic field.

The experiment of the 1940s fell into the category of "modeling once" , because after the test the device dissipated under a giant explosion. Moreover, it is too difficult to recreate and control an explosion with TNT.

Instead of using TNT, Japanese researchers poured a huge amount of 3.2 megajoule into the generator, causing the small magnetic field to be squeezed quickly at 32,000km / h. Testing requires 4 million ampere current running through the transmitter. When the force is large enough, it will burst, a strong shock wave will destroy everything on its path.

To protect themselves from experimentation and protect the laboratory from being devastated, they erected an iron for the transmitter. But they only built the cage so that it can withstand the destructive power of 700 Tesla, actually generating 1,200 Tesla. That is why the iron cage in the short clip is all over.

"I didn't expect it to be so strong," said Shojiro Takeyama, a physicist at Tokyo University. "Next time, we will make the lab more certain."

When the force is large enough, it will burst, a strong shock wave will destroy everything on its path.

As the researchers describe, the experiment not only tells us how each material reacts to a strong magnetic field, but also opens the way to future fusion technology. Fusion machines need a strong magnetic field of up to thousands of Tesla to operate efficiently, so we must first find ways to limit the magnetic field's power to get clean energy from fusion.

Next test, Japanese researchers will build a stronger cage, try with a strong magnetic field of 1,500 Tesla.

The researchers concluded in the report:

"Just 40 years ago, the 1,000 Tesla strong magnetic field was very difficult to create, but we still had to rely on fearful and unsafe, uncontrollable explosives. Current results open a new era, a new step in creating and using extremely strong magnetic fields to study solid bodies, as well as plasma substances in fusion reactions, to apply to studies. the same, similar".