Lyn Evans (left) and Luciano Maiani at the breakthrough of a new transfer tunnel to the LHC on 15 May 2001.

July/August 2001.

A complete LHC cell of six dipoles, straight sections, a prototype cryogenic distribution line and an electrical feedbox began tests in the full String 2 June 2002.

October 2002 p5.

The first US-built magnet, came 6000 km by land and sea from the Brookhaven National Laboratory in New York to arrive at CERN in its container on 21 January 2003.

March 2003 p5.

More than 80 dipole cold masses had arrived at CERN by late summer 2003. This one is being installed in the robotic "crab", designed to carry the magnets around the site.

October 2003 p5.

The first 800 jacks for one sector of the LHC had arrived at CERN from India in autumn 2003. They are designed to adjust the positions of the 32 tonne magnets to 0.05 mm precision.

December 2003 p8.

By December 2003 the industrial production of the superconducting dipoles was in full swing.

Jan./Feb. 2004 pp30–32.

Repair of faulty elements in the cryogenic distribution line discovered in June 2004 got under way at CERN in November, allowing installation to proceed with help from other accelerator laboratories.

January/February 2005 p5.

The first section of the cryogenic distribution line, corresponding to an eighth of the accelerator, has been tested at a temperature of 10 K since the end of November 2005.

January/February 2006 p6.

Installation of pulse-forming networks for the LHC injection kickers, built and tested at TRIUMF (above) as part of the Canadian contribution to the LHC, began in May 2005.

May 2006 p8.

Industrial production of the superconducting dipoles was set for completion in November 2006.

October 2006 p28.

On 5 September 2006 the 1000th superconducting magnet system was installed in sector 3-4. During the same week, the final system for sector 8-1 was also installed.

November 2006 p7.

The final superconducting magnet system, 15 m long and weighing 34 tonnes, made its descent into the accelerator tunnel on 26 April 2007.

June 2007 p5.

On 13 July 2007, an inner triplet assembly of quadrupole magnets passed its pressure test in the tunnel after strengthening modifications.

September 2007 p5.

Director-general Robert Aymar sealed the last interconnect between the main magnets on 7 November 2007, at the end of two years of work involving 123,000 connections.

December 2007 p7.

The LHC is on course to start up in 2008, with the machine components fully installed and commissioning well underway.

Jan./Feb. 2008 p5.

Particles in the LHC! A bunch of protons arrives at point 3 on the very first attempt during synchronization tests on 8 August 2008.

September 2008 p5.