Latest press releases

CERN opens its doors to the world

On 6 April 2008, CERN 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. On the surface, a wide-ranging programme will be on offer, allowing people to learn about the physics for which this huge instrument is being installed, the technology underlying it, and applications in other fields.

ATLAS completes world’s largest jigsaw puzzle

Geneva, 29 February 2008. Today the ATLAS collaboration at CERN 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 Collider (LHC). The first piece of ATLAS was installed in 2003 and since then many detector elements have journeyed down the 100 metre shaft into the ATLAS underground cavern. This last piece completes this gigantic puzzle.

CMS celebrates the lowering of its final detector element

Geneva, 22 January 2008. In the early hours of the morning the final element of the Compact Muon Solenoid (CMS) detector began the descent into its underground experimental cavern in preparation for the start-up of CERN’s Large Hadron Collider (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. It marks the culmination of eight years of work in the surface hall, and moves CMS into final commissioning before registering proton-proton collisions at the LHC.

CMS tracking detector successfully installed

Geneva, 18 December 2007. Installation of the world’s largest silicon tracking detector was today successfully completed at CERN. In the early hours of Thursday 13 December the CMSSilicon 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.

CERN Director General reports on LHC progress

Geneva, 14 December 2007. CERN1 Director General Robert Aymar today delivered an end of year status report at the 145th meeting of Council, the Organization’s governing body. Dr Aymar reported a year of excellent progress towards the goal of starting physics research at the Large Hadron Collider (LHC) in summer 2008. Council also approved a budget for CERN in 2008 that will allow consolidation of CERN’s aging infrastructure to begin, along with preparations for an intensity upgrade for the LHC, by 2016.


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