Standard Model of particle physics is sometimes called "the theory of almost everything." This is the best set of equations to date, describing the fundamental particles of the universe and how they interact. Nevertheless, this theory has flaws $ CUT $. It does not give an adequate explanation of gravity, can not explain the asymmetry of matter and antimatter in the universe of the young; particles of dark matter and dark energy, for it does not exist.

Now, scientists have a new tool that will help in the search for physics beyond the good, but incomplete Standard Model. An international team of researchers has developed and tested a magnetic shield, which for the first time be able to create extremely low magnetic field in large volume. This device provides a magnetic shielding 10 times better than any previous screens. His record-breaking performance will enable scientists to measure certain properties of fundamental particles with a high level of accuracy - and this, in turn, can reveal hitherto hidden physics and direct them towards the search for new particles.

The work describes a novel magnetic shield, appeared in the Journal of Applied Physics.

Precision measurement is one of three limits that impede the search of physics beyond the Standard Model, says Tobias Lins, who worked on the new magnetically shielded in a research lab of Peter Fierlinger at the Technical University of Munich in Germany. Accurate measurements complement other methods of finding new physics, including pushing particles in collider to produce new, high-energy particles, and gazing into space with the aim to capture the signals of the young universe.

"Precise experiments can explore nature in the framework of energy that are not available on the current and the next generation of experiments with colliders" - says Lins. This is because the existence of exotic new particles may slightly change the properties of the known particles. The tiny deviation from the expected parameter may mean still undiscovered fundamental particle in the "particle zoo".

Scientists have constructed a new screen of several layers of special composition consisting of nickel and iron, which has a high degree of permeability - i.e. can act like a sponge, absorbing and redirecting the magnetic field, such as self-magnetic field of the Earth or fields generated by equipment such as motors and transformers.

"This unit can be compared with the cuboid Russian dolls - says Lins. - Like the dolls, the majority of the layers can be used alone, and the more layers, the greater the protection of the inner parts. "

The big break command is deep numerical simulation arrangement precisely manufactured magnetizable alloys, resulting in substantially optimized design details, such as the thickness of the compounds and the distance between the layers.

The materials in magnetic screens change their magnetization due to environmental influences such as temperature changes and vibration caused by passing cars, and these shifts can penetrate the screen. Thinner sheets in the new design will allow a better balance of the magnetic field in the metal, resulting in very little and there was a uniform field within the shielded space, even bypassing the normal magnetic field of the interstellar medium.

New experiments are not far off
The plans of scientists - to use new magnetic shield in an experiment to test the limits of the charge distribution (called an electric dipole moment) on the xenon isotopes. EDM, which will be higher than predicted by the Standard Model, can signal the existence of a new particle, the mass of which will depend on the amount by which EDM has deviated from the expected value.

The scientists also want to use the modified detector SQUID - which can detect the most subtle magnetic fields - to find long been suspected, but never detected magnetic monopoles. The magnetically quiet space inside the screen monopole passing through the SQUID, can generate a magnetic field above the background noise level, says Lins.

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