Cryo Problems 07/12
Posted: Mon Dec 07, 2009 11:42 am
At 0425 this morning, Sector 45's Cryo system indicated a problem with the warm compressor (which is..?).
At 0439, all sectors other than 23 had tripped - to quote the logbook: "Now all the sectors except S23 are tripping! Why?"
This was soon resolved to be a brief electrical fault that affected multiple systems - eventually all the Cryo systems came back apart from those at Point 4, and at 0630 when most other problems had been solved, the magnet temperatures in Point 4 were still rising. The problem is still ongoing, as far as I can tell.
Also, 24 of the 100 collimators were affected by the power glitch - the LHC COLL eLogBook gives a list of these.
At 0439, all sectors other than 23 had tripped - to quote the logbook: "Now all the sectors except S23 are tripping! Why?"
This was soon resolved to be a brief electrical fault that affected multiple systems - eventually all the Cryo systems came back apart from those at Point 4, and at 0630 when most other problems had been solved, the magnet temperatures in Point 4 were still rising. The problem is still ongoing, as far as I can tell.
Also, 24 of the 100 collimators were affected by the power glitch - the LHC COLL eLogBook gives a list of these.