The Large Hadron Collider (LHC) has been in the news in the last two weeks—first, for the official start of the “Big Bang” experiment September 10. Several news sources offered informative guides, e.g., BBC, CNN, and MSNBC. Then came startup glitches. The most serious glitch (“incident in LHC sector 34”) occurred September 19; it will delay the experiment for at least two months because it requires that a sector of the tunnel be warmed up to allow for repairs (AP):
Because the Large Hadron Collider operates at near absolute zero—colder than outer space—the damaged area must be warmed to a temperature where humans can work. That takes about a month. Then it has to be re-chilled for another month.
What is the main DDC number for the Large Hadron Collider? The short answer is 539.736 Supercolliders. For details, see the Dewey blog entry for April 18, 2007.
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