Large Hadron Collider re-launched
The LHC. April 5, 2015. Collision of particles with a collimator i>
After two years, scientists from CERN restart the Large Hadron Collider. Today around 10:47 CET (12:47 MSK), the first beam of protons was on the 27-kilometer tunnel at speeds close to the speed of light. At 12:27 CET (14:27 MSK) was launched on the second particle beam in the opposite direction. Injection energy in both cases was 450 GeV.
Launch took place a week later than planned because of short circuit in the circuits of of superconducting magnets. The reason for the closure was the metallic objects dropped into the tube that connects the electromagnet with diode box. Problem solved right the first time, giving impetus to a strong electric current, it is vaporized metal particle.
© AP / KEYSTONE / Martial Trezzini i>
The LHC was launched on 10 September 2008. Over the years were collected petabytes of experimental data on the basis of which could still prove highly likely the existence of the Higgs boson - "God particle", which is responsible for the existence of the mass of all other particles. In 2013, physicist Peter Higgs and François Englert, who predicted the existence of this particle, awarded the Nobel Prize.
Today, after the successful launch of the CERN Director Rolf Heuer (Rolf Heuer) congratulated the scientists and engineers: "Thank you very much ... and now the hard work begins!», - said he .
[Press Release] Proton beams are back in the LHC http://t.co/OMgJ6w84Cr #RestartLHC pic.twitter.com/rdTsuCkWLk - CERNpress (CERNpress) April 5, 2015 blockquote> So, April 5, 2015 LHC successfully launched. Who is the real clash is not planned. At least another month beams will drive without collisions, gradually increasing the injection energy. But in early June to begin actual experiments with energies greater than those which were before the upgrade of the LHC. Collision energy proton beams is increased from 8 to 13 TeV, which will open up new opportunities for research.
© ALICE / CERN i>
Over the past two years conducted a serious inspection and repair LHC collider replaced 18 of the 1232 superconducting magnets bipolar, which adjust the direction and focus particle beams on the accelerator. The remaining magnets have provided improved protection system cooling. A new system to better control the dissipation of the energy, in order to avoid damage to the collider. Improved cryogenic system that allows the magnets to operate at low temperatures.
With the world's most powerful particle accelerator physicists hope to make more numerous discoveries, checking the stability of the Standard Model. One of the goals of the second launch of the LHC will be the search for dark matter. In 2015, scientists will study the possibility of a modernized colossus LHC, and in 2016-2018 plans to conduct real experiments.
Updated Collider will run for three years, until a new technical stop to check the equipment.
Source: geektimes.ru/post/248554/
