Search found 4 matches
- Mon Apr 12, 2010 1:01 pm
- Forum: The Accelerator
- Topic: Current Events Discussion
- Replies: 512
- Views: 615043
Re: Current Events Discussion
That, my friends, looks a whole lot like a quench. Since they're back up this morning, clearly it was not, or QPS did it's thing properly. I'd like to know if they had time to dump beams properly before the field collapsed, and what the time scale on the field loss actually was. Where do they dump a...
- Sun Dec 13, 2009 5:28 pm
- Forum: The Accelerator
- Topic: LHC Shutdown schedule
- Replies: 30
- Views: 39025
Re: LHC Shutdown schedule
You know, it's not really about overstressing the magnets. When a magnet is run past it's limit, it quenches. There are new safety systems in place -- which have been tested in theory -- but a full quench is a titanic event and at this point in time, I think they would rather be conservative than te...
- Wed Dec 09, 2009 2:41 am
- Forum: The Accelerator
- Topic: 30,000 AMPS, WOW!
- Replies: 11
- Views: 18334
Re: 30,000 AMPS, WOW!
Even though the magnet coils have essentially zero resistance, they have plenty of inductance, and it takes a reasonably stout voltage to ramp a solenoid from one field to another.
- Fri Dec 04, 2009 2:20 pm
- Forum: The Accelerator
- Topic: Daily Schedules and Hiccups
- Replies: 41
- Views: 52476
Re: Daily Schedules and Hiccups
I wanted to amplify a bit on Danny's explanation of a Quench. In superconducting magnetland, a quench, which is a sudden dischartge of energy from the circulating current of a magnet, can be caused by all manner of things, not just overheating. What happens is simple - a section, often a very small ...