Some Official Information and Even Pictures December 5, 2008Posted by gordonwatts in LHC.
Robert Aymar is the outgoing Director General of CERN. He gave a recent update of CERN accelerator activities at the ECFA conference. It is a complete update, but there are a few pages in the middle with information on the current state of the LHC. And – lo!!!!! – pictures. Just two. And no ice is visible. I’ve extracted one of the pictures and put in here. That is the link between two magnets – normally the two magnets should be totally lined up.
There are three mitigation strategies that he lists in this talk:
- Improve the quench detection system. The improved sensors will help better localize problems as well as detect them a bit faster.
- Add relief valves all around the accelerator. If such a disaster occurs again then these releif valves should prevent the violent pressurization that occurred and caused such a lot of damage (like the moved magnets shown above).
- Better anchoring of the magnets. So if there is another pressure build up the magnets are less likely to move!
He also mentions two other inter connects similar to the one that failed that have an abnormal resistance – but their resistance is thought to be much less than the interconnect that failed. In ATLAS we’ve been having to evacuate the cavern due to numerous electrical tests of the LHC when they were localizing these. Nanohoms. So small! 🙂
Unfortunately, there is no real mention of schedule in this talk. It is nice to see something that is officially public. This matches the talk I saw on Monday, but, of course, it looks like CERN has made it officially public. It would be nice if they would do the same thing to that other talk too.