Re: *** COLLISION ALERT ***
Posted: Sat Dec 05, 2009 11:51 pm
yeah, i noticed its intensity drop like a sack of bricks on the BRAN count rate chart..DCWhitworth wrote:Beam one dumped according to Status Op.
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Weekend of 12-3-09 collision events !
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Re: *** COLLISION ALERT ***
Posted: Sat Dec 05, 2009 11:54 pm
Indeedy. We're all awaiting it - which is why I'm up waiting for data to look at, and not tucked up in bed.Xymox wrote:Different subject... From the CMS Page "gather the experts in preparation for the first physics fills of the LHC."
I think its approaching time...
Betcha it's not...Xymox wrote:betcha its gonna be 4x4
Re: *** COLLISION ALERT ***
Posted: Sat Dec 05, 2009 11:55 pm
Yet page 1 still shows beam on at 1.22e+10Texanguy wrote:yeah, i noticed its intensity drop like a sack of bricks on the BRAN count rate chart..DCWhitworth wrote:Beam one dumped according to Status Op.
Re: *** COLLISION ALERT ***
Posted: Sat Dec 05, 2009 11:56 pm
weird, eh? ._. or am i just missing something?DCWhitworth wrote:Yet page 1 still shows beam on at 1.22e+10Texanguy wrote:yeah, i noticed its intensity drop like a sack of bricks on the BRAN count rate chart..DCWhitworth wrote:Beam one dumped according to Status Op.
Re: *** COLLISION ALERT ***
Posted: Sat Dec 05, 2009 11:59 pm
Page 1: Global Beam Permit=Except? what does that mean? ._.
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:00 am
http://lhc-commissioning.web.cern.ch/lh ... C-news.htm
don't you think this "Ramp" in the schedule is quite interesting?
Ramp until now was used to reach higher energy (1.18 TeV for instance ^^).
don't you think this "Ramp" in the schedule is quite interesting?
Ramp until now was used to reach higher energy (1.18 TeV for instance ^^).
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:02 am
I think I trust the Status Op page more on this. I've seen it cut out before if data is lost but not drop so I'm guessing the drop is accurate.Texanguy wrote:weird, eh? ._. or am i just missing something?DCWhitworth wrote:Yet page 1 still shows beam on at 1.22e+10Texanguy wrote: yeah, i noticed its intensity drop like a sack of bricks on the BRAN count rate chart..
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:04 am
From LHCb log book :
This makes it clear now.Beam 1 with 4 bunches was kept for 45 minutes and then dumped. LHC page 1 is stuck again (LHC is working on
fixing it).
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:05 am
I think it's an error in the display system (as opposed to an error in the LHC workings)Texanguy wrote:Page 1: Global Beam Permit=Except? what does that mean? ._.
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:07 am
Beam 2 circulating. More people paying attention at ATLAS now. . . .
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:09 am
Guy holding a camera at ATLAS
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:10 am
Definitely more attention. Man has appeared with video camera to film the moment . . .DCWhitworth wrote:Beam 2 circulating. More people paying attention at ATLAS now. . . .
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:11 am
beam 2 intensity went up off the charts for a bit... heh
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:12 am
Yes it did and then dropped
Re: *** COLLISION ALERT ***
Posted: Sun Dec 06, 2009 12:14 am
OoOOO new video angle !!!
Go ATLAS
Go ATLAS