Home » SCIENCE » CERN All Set to Relaunch LHC for God Particle Second Run Experiments from March 23
The Large Hadron Collider is preparing for running at higher energy in 2015 (Image: Maximilen Brice/CERN)

CERN All Set to Relaunch LHC for God Particle Second Run Experiments from March 23

CERN, the particle research giant in Geneva that had shut down in 2013 its epoch-making Large Hadron Collider which was able to produce the dark matter or God’s Particle, has announced new and reburbished LHC now.

For almost three years the LHC has gone through maintenace with hundreds of engineers and technicians working on consolidating and strengthening the accelerator in preparation for running at the higher collision energy of 13 TeV, nearly double the collision energy of the LHC’s first run is ready now.

CERN’s LHC is the largest and most powerful particle accelerator with a 27-km superconducting tunnel machine that was almost cooled to its original and nominal operating temperature of 1.9 degrees above absolute zero under the maintenance.

“With this new energy level, the LHC will open new horizons for physics and for future discoveries,” said earlier CERN Director-General Rolf Heuer. “I’m looking forward to seeing what nature has in store for us”.

CERN, the particle research giant in Geneva that had shut down in 2013 its epoch-making Large Hadron Collider which was able to produce the dark matter or God’s Particle, has announced new and reburbished LHC now.

For almost three years the LHC has gone through maintenace with hundreds of engineers and technicians working on consolidating and strengthening the accelerator in preparation for running at the higher collision energy of 13 TeV, nearly double the collision energy of the LHC’s first run is ready now.

CERN’s LHC is the largest and most powerful particle accelerator with a 27-km superconducting tunnel machine that was almost cooled to its original and nominal operating temperature of 1.9 degrees above absolute zero under the maintenance.

General,Accelerators,LHC,Accélérateurs,Complex,Schema,Accelerators“With this new energy level, the LHC will open new horizons for physics and for future discoveries,” said earlier CERN Director-General Rolf Heuer. “I’m looking forward to seeing what nature has in store for us”.

Jean-Philippe Tock of the CERN Technology department and his team took upon the taskof strengthening the Superconducting Magnets and Circuits Consolidation project for over two years and more than 10,000 high-current splices in some 1695 interconnections between magnets in the LHC have been fixed.

Engineers Anna Chrul and Mirko Pojer describe work in the tunnel, where the safety release valves used for dispelling helium safely from the magnets, and the process of adding a shunt to each splice within the interconnection to provide an alternate pathway for the 11,000-amp current to safely pass from magnet to magnet in the event of a fault.

CERN tech director Frédérick Bordry explained the implications of running the accelerator at the higher collision energy of 13 TeV, highlighting some of the requirements for the machine to reach this new energy frontier – such as radiation-resistant electronics and a high-quality vacuum.

Large Hadron Collider,LHC,Magnet,Dipole,Superconducting,Interconnection,TunnelKaty Foraz, activities coordinator for LS1 (long shutdown 1), describes the logistical challenges of coordinating the maintenance work, revealing that the access lift to the LHC tunnel went up and down more than 400,000 times in two years of maintenance.

The first circulating beams of protons in the LHC are planned for the week beginning 23 March, and first 13 TeV collisions are expected in late May to early June.

Last December, CERN said for the first time that the magnets of one sector of the LHC, one eighth of the ring, were successfully powered to the level needed for beams to reach 6.5 TeV, the operating energy for run 2. Its goal is to run with two proton beams in order to produce 13 TeV collisions, an energy never achieved by any accelerator in the past. If successful, the new milestone will be achieved sometime in June 2015.

“After the huge amount of work done over the last two years, the LHC is almost like a new machine,” said CERN’s Director for Accelerators and Technology Frédérick Bordry. “Restarting this extraordinary accelerator is far from routine. Nevertheless, I’m confident that we will be on schedule to provide collisions to the LHC experiments by May 2015”.

Apart from the LHC, its four large experiments — ALICE, ATLAS, CMS and LHCb — were also refurbished for the major preparatory work for run 2, said CERN.

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