Geneva, 20 September 2008. During commissioning (without beam) of the final LHC sector (sector 3-4) at high current for operation at 5 TeV, an incident occurred at mid-day on Friday 19 September resulting in a large helium leak into the tunnel. Preliminary investigations indicate that the most likely cause of the problem was a faulty electrical connection between two magnets, which probably melted at high current leading to mechanical failure. CERN ’s strict safety regulations ensured that at no time was there any risk to people.
Latest press releases
Geneva, 10 September 2008. The first beam in the Large Hadron Collider at CERN1 was successfully steered around the full 27 kilometres of the world’s most powerful particle accelerator at 10h28 this morning. This historic event marks a key moment in the transition from over two decades of preparation to a new era of scientific discovery.
“It’s a fantastic moment,” said LHC project leader Lyn Evans, “we can now look forward to a new era of understanding about the origins and evolution of the universe.”
Geneva, 5 September 2008. A report published today in the peer reviewed Journal of Physics G: Nuclear and Particle Physics1 provides comprehensive evidence that safety fears about the Large Hadron Collider (LHC) are unfounded. The LHC is CERN’s2 new flagship research facility. As the world’s highest energy particle accelerator, it is poised to provide new insights into the mysteries of our universe.
Geneva, 7 August 2008. CERN1 has today announced that the first attempt to circulate a beam in the Large Hadron Collider (LHC) will be made on 10 September. This news comes as the cool down phase of commissioning CERN’s new particle accelerator reaches a successful conclusion. Television coverage of the start-up will be made available through Eurovision.
Geneva, 20 June 2008. At its 147th meeting in Geneva today, the CERN1 Council heard news on progress towards start-up of the laboratory’s flagship research facility, the Large Hadron Collider (LHC). Commissioning of the 27-kilometre LHC began in January 2007 when the first cool down of one of the machine’s eight sectors began. Today, five sectors are at or close to their operating temperature of 1.9 degrees above absolute zero and the remaining three are approaching that temperature.
Geneva, 9 May 2008. A Protocol to the 2006 Cooperation Agreement between Saudi Arabia and CERN was today signed at CERN by H.E. Dr. Mohammed I. Al-Suwaiyel, President of the King Abdulaziz City of Science and Technology, on behalf of the Government of Saudi Arabia, and Robert Aymar, Director General of CERN1, in the presence of H.E. Ali I. Al-Naimi, Minister of Petroleum and Mineral resources and Chairman of the Board of Directors of Saudi Aramco, H.E. Dr. Ibrahim A. Al-Assaf, Minister of Finance and a delegation of representatives of Saudi universities and Saudi Aramco.
On 6 April 2008, CERN1 will open its doors to the public, offering a unique chance to visit its newest and largest particle accelerator, the Large Hadron Collider (LHC), before it goes into operation later this year. This scientific instrument, the largest and most complex in the world, is installed in a 27 km tunnel, 100 metres underground in the Swiss canton of Geneva and neighbouring France. CERN will open all access points around the ring for visits underground, to the tunnel and the experiment caverns.
Geneva, 29 February 2008. Today the ATLAS1 collaboration at CERN2 celebrates the lowering of its last large detector element. The ATLAS detector is the world’s largest general-purpose particle detector, measuring 46 metres long, 25 metres high and 25 metres wide; it weighs 7000 tonnes and consists of 100 million sensors that measure particles produced in proton-proton collisions in CERN’s Large Hadron Collider3 (LHC).
Geneva, 22 January 2008. In the early hours of the morning the final element of the Compact Muon Solenoid (CMS)1 detector began the descent into its underground experimental cavern in preparation for the start-up of CERN2’s Large Hadron Collider3 (LHC) this summer. This is a pivotal moment for the CMS collaboration, as the experiment is the first of its kind to be constructed above ground and then lowered, element by element, 100 metres below.
Geneva, 18 December 2007. Installation of the world’s largest silicon tracking detector was today successfully completed at CERN1. In the early hours of Thursday 13 December the CMS2 Silicon Strip Tracking Detector began its journey from the main CERN site to the CMS experimental facility. Later that day it was lowered 90 metres into the CMS cavern. Installation began on Saturday 15 December and was concluded this morning.