Particles are again circulating in the Large Hadron Collider – Money.pl

2015-04-07 11:20

[Photo: sxc / cc / caltiva]

After two years of intensive modernization and a few months prior to the reboot, on Easter Sunday resumed operation of the Large Hadron Collider (LHC). The world’s most powerful particle accelerator at CERN is located near Geneva.

Large Hadron Collider is the most complex machine constructed by man. This type of microscope that allows to explore the world in a very small scales. This leads him to the collision of two moving in opposite particle beams – the proton nuclei and lead. Since February 2013,., After three years of intensive work, the LHC had a break – the unit was repaired and modernized so as to be able to achieve more than ever before the collision energy. This allows you to better investigate the nature of elementary particles.

As mentioned in the Communication CERN, on Sunday, April 5 LHC resumed operation. O h. 10.41 The first proton beam spread around the 27-km-long tunnel of the accelerator, and the next chair. 12.27 went in the opposite direction. Beam circulating in the accelerator of 450 GeV energy (GeV is a billion electron volts).

This is not a peak performance of the LHC. With the modernization of the particles in the accelerator to achieve energy 6.5 TeV per beam (TeV is a thousand billion electron volts). However, before the energy beam is lifted, all subsystems have yet to be thoroughly checked.

“Today, CERN’s heart beats to the rhythm again LHC” – said CERN Director General Rolf Heuer. He added that the smooth operation of accelerator physics community needs is the main purpose of the CERN.

In the second round of data collection in addition to the increased energy has to be called twice. luminosity, ie the intensity of the collision (with 20 million times per second to 40 million times per second).

The beams of protons are accelerated in the so-called accelerators. packs. In the LHC after the new opening is to be increased not only the number of such packets per second, but the number of protons in the package. In addition, the collision to be more effective by changing the geometry of intersections proton beams.

,, Back to the LHC beams is the culmination of a long and hard work of many groups – said the head of the Department of Beam CERN Paul Collier. – It is a great satisfaction for the whole team to be back & gt; & gt; behind the wheel

In the second round of the LHC activities planned include research Brout-Englert mechanism-boson, the dark matter, antimatter and quark-gluon plasma. Besides, after the discovery of the Higgs boson, physicists with even greater precision examine the so-called. The Standard Model – the theory explaining the functioning of the world of elementary particles.

,, After two years of increased effort LHC is again in excellent condition – said the director. CERN Accelerators and Technology Frédérick Bordry. – But the most important step is still ahead of us, it is to raise energy beams to unprecedented so far, a record level. “

CERN is the largest and most important in the world research center for particle physics. Bada there also phenomenon, which could occur just after the Big Bang. The members of the CERN are 21 countries, including Poland. Today, with all projects and experiments at CERN, working almost 300 experts from Polish research units including approx. 100 in experiments at the LHC. (PAP )

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