Friday, January 16, 2009

"The latest from the LHC"

I will just copy and paste from the CERN Bulletin ...

As promised by the Director-General, we will start a series of regular updates detailing the status of the LHC repairs, consolidation and commissioning.

As of last week all magnets in the damaged area of sector 3-4 have been removed and raised to the surface. In total 39 dipoles and 14 short straight sections are now on the surface. Four replacement magnets have been lowered and installed, and by the end of this week this figure should total seven. Cold testing replacement magnets in SM18 has resumed after the Christmas shutdown. The civil engineering work to repair the slight damage to the concrete has been completed. Outside the damaged area the Vacuum Group are cleaning some of the beam screens in situ.

Both sector 1-2 and sector 5-6 are also now at room temperature and accessible. As well as routine maintenance in these sectors, one magnet from sector 1-2 which was found to have high resistance (approximately 100 nano-ohms, two orders of magnitude higher than the specified resistance) has been removed and is on the surface ready to be opened and investigated.

Already, I am much happier about the information flow.

There is also a really cool set of photos documenting the transport of one of these magnets from the tunnel to the surface to be repaired. If you go to this CERN Document Server page and click on the first photo, you can see a nice slideshow. Sorry you only get a teaser pic here:

A bientôt!

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