On 10 September 2008, the proton beams were successfully circulated in the main ring of the LHC for the first time. On 19 September 2008, the operations were halted due to a serious fault between two superconducting bending magnets. The LHC will not be operational again until the summer of 2009.
The LHC was officially inaugurated on 21 October 2008, in the presence of political leaders, science ministers from CERN's 20 Member States, CERN officials, and members of the worldwide scientific community.
The total cost of the project is expected to be %u20AC3.2%u20136.4 billion. The construction of LHC was approved in 1995 with a budget of 2.6 billion Swiss francs (%u20AC1.6 billion), with another 210 million francs (%u20AC140 million) towards the cost of the experiments. However, cost over-runs, estimated in a major review in 2001 at around 480 million francs (%u20AC300 million) for the accelerator, and 50 million francs (%u20AC30 million) for the experiments, along with a reduction in CERN's budget, pushed the completion date from 2005 to April 2007. The superconducting magnets were responsible for 180 million francs (%u20AC120 million) of the cost increase. There were also engineering difficulties encountered while building the underground cavern for the Compact Muon Solenoid, in part due to faulty parts loaned to CERN by fellow laboratories Argonne National Laboratory, Fermilab, and KEK.
On 25 October 2005, a technician was killed in the LHC tunnel when a crane load was accidentally dropped.
On 27 March 2007 a cryogenic magnet support broke during a pressure test involving one of the LHC's inner triplet (focusing quadrupole) magnet assemblies, provided by Fermilab and KEK. No one was injured. Fermilab director Pier Oddone stated "In this case we are dumbfounded that we missed some very simple balance of forces". This fault had been present in the original design, and remained during four engineering reviews over the following years. Analysis revealed that its design, made as thin as possible for better insulation, was not strong enough to withstand the forces generated during pressure testing. Details are available in a statement from Fermilab, with which CERN is in agreement. Repairing the broken magnet and reinforcing the eight identical assemblies used by LHC delayed the startup date, then planned for November 2007.
Problems with a magnet quench on 19 September 2008 caused a leak of six tonnes of liquid helium, and delayed the operation for several months. The LHC is expected to be restarted in June 2009.
The upcoming experiments at the Large Hadron Collider have sparked fears among the public that the LHC particle collisions might produce doomsday phenomena, involving the production of stable microscopic black holes or the creation of hypothetical particles called strangelets.
People have also had depression even commiting suicide fearing the end of the world.
We the undersigned understand why you would conduct such an experiment, however we fear that this experiment could cause the end of the world, we believe this is very unfair because we did not have the choice on whether this experiment should be conducted, whatever happened to freedom of speech.
We also believe the money ( %u20AC3.2%u20136.4 billion euros) could be going to a better cause like Global Warming and for people starving in 3rd world countries.
Thank you for taking the time to read this and please consider our opinions i am only 14 and i want to live a long happy life and see money go to better causes. People are also in fear of doomsday which is causing depression even people suiciding.
Keep up the great work. Look what you've accomplished!
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