LHC is reporting a quench in sector 23. Machine is stopped for access.
Anyone got any further info ? Nothing looksd amiss on the cryo etc so hopefully minor.
Quench 1pm 4 Dec 2009
- DCWhitworth
- LHCPortal Guru
- Posts: 599
- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Quench 1pm 4 Dec 2009
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: Quench 1pm 4 Dec 2009
Progress page says:
07:30-12:00: Aperture studies continued. Stopped by beam-induced quench.
So possibly managed to smash a beam into something they shouldn't?
07:30-12:00: Aperture studies continued. Stopped by beam-induced quench.
So possibly managed to smash a beam into something they shouldn't?
- DCWhitworth
- LHCPortal Guru
- Posts: 599
- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Re: Quench 1pm 4 Dec 2009
Page 1 now says "Start the recovery from access to the machine" so hopefully it's all OK.
Hopefully this was one of Chris's 'Quenchinos"
Hopefully this was one of Chris's 'Quenchinos"
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: Quench 1pm 4 Dec 2009
They've only been down 3 hours, so I'd agree it's rather minor. Better safe than sorry though!
Re: Quench 1pm 4 Dec 2009
The Quenchino seems to have been Beam Induced - they've been playing around with the beam all morning to test the beam cleaning systems. Apparently they'd already lost parts of the beam due to hitting things already, and they finally managed to break something!
No major damage reported anywhere.
No major damage reported anywhere.
- DCWhitworth
- LHCPortal Guru
- Posts: 599
- Joined: Mon Nov 30, 2009 8:13 am
- Location: Norwich, UK
Re: Quench 1pm 4 Dec 2009
I guess they just found the tolerance limit of part of the LHC then !
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: Quench 1pm 4 Dec 2009
Seems like they're ready to resume now:
"Access finished - thanks all"
"Precycle in various sectors"
Waiting to see the LHC opening its TED "gates" again moving the status from "dump" to "beam".
"Access finished - thanks all"
"Precycle in various sectors"
Waiting to see the LHC opening its TED "gates" again moving the status from "dump" to "beam".