2012 Events Discussion
- DCWhitworth
- LHCPortal Guru
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Re: 2012 Events Discussion
Everything looking good. Hardware commissioning done by Wednesday, machine handed over to beam operation. they've run through 'dry' cycles and are now planning beam tomorrow afternoon.
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: 2012 Events Discussion
The progress report link is out of date. There is a new link on the LHC cordination page. From what i could gather, besides a few minor glitches, things are going smothly and they will be ready for the first beam today!!!!!
Good luck to all you LHC folks find us some exciting particals this year
Good luck to all you LHC folks find us some exciting particals this year
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Re: 2012 Events Discussion
Looks like we have beam. Checkout is just about on schedual. Hope for a great year of data taking.
- chriwi
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Re: 2012 Events Discussion
CMS seems to be the first experiment what already shows live-events this year but on a new URL: http://cmsdoc.cern.ch/B40tvs/live_event.html the one in the portal leads to errormessage
bye
chriwi
chriwi
- DCWhitworth
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Re: 2012 Events Discussion
Just ramped to 4TeV for the first time, although beam 2 was almost immediately dumped.
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
- chriwi
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Re: 2012 Events Discussion
Somehow they repeatedly lose the beam because of resonance-problems, in the dashboard it appears that the tune feedbacksignal gets too high.
Has anyone here an idea why they cannot solve this problem?
Its like they fight a new behaviour of the accelerator, maybe new because of the higher energy (4TeV) or other effact which sneaked in during the winterbreak?
Has anyone here an idea why they cannot solve this problem?
Its like they fight a new behaviour of the accelerator, maybe new because of the higher energy (4TeV) or other effact which sneaked in during the winterbreak?
bye
chriwi
chriwi
Re: 2012 Events Discussion
They're working in a new space, higher energy and higher squeeze, so it takes some attempts to sort things out. But they don't seem to see it as a problem, it's not even mentioned in the 'to be sorted out' list on the progress meeting.
- CharmQuark
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Re: 2012 Events Discussion
Helloooooo
You lot are way to quiet for my liking
You lot are way to quiet for my liking
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.
- DCWhitworth
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Re: 2012 Events Discussion
I see we're about to have collisions, are they the first of 2012 ?
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: 2012 Events Discussion
New option on top vistar LHC page1. t(SB):00:00:00 = Time on Stable Beams
http://lhc-commissioning.web.cern.ch/lh ... -2011.html
http://lhc-commissioning.web.cern.ch/lh ... -2011.html
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- LHCPortal Guru
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Re: 2012 Events Discussion
Yep! First collisions of 2012 and first ever anywhere at 8 TeV. Now on to lumi scans and lossmaps. More prep over the weekend and Science by next week. The LHC is celebrating the start of the 2012 Science season they are having a Google plus On Air Hangout on Wednesday April 4 at 4:00 PM CERN time ( 10:00 AM EDT) for an hour and a half. If you get on Google and are in the right place at the right time you could be on it. Otherwise anyone can watch and ask questions from the text chat. https://plus.google.com/u/0/10425236392 ... rJ95?hl=en
- DCWhitworth
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Re: 2012 Events Discussion
I don't think I believe the recent Tweets here - https://twitter.com/#!/lhcstatus
DC
The LHC - One ring to rule them all !
The LHC - One ring to rule them all !
Re: 2012 Events Discussion
First stable beams of the year!
- chriwi
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Re: 2012 Events Discussion
CMS delivered already the first inverse ubarn of integrated luminosity for 2012 this morning.
Also LHCb delivered 200 inverse nbarn
ALICE doesnt seem to be so exited about proton-collissions anymore and is rather idle.
But why isnt ATLAS doing anything evenso its status says physics? Or is this only a problem of the Vistars which dont show the events collectet by ATLAS? At least they are consistent in claiming : no luminosity from ATLAS.
Also LHCb delivered 200 inverse nbarn
ALICE doesnt seem to be so exited about proton-collissions anymore and is rather idle.
But why isnt ATLAS doing anything evenso its status says physics? Or is this only a problem of the Vistars which dont show the events collectet by ATLAS? At least they are consistent in claiming : no luminosity from ATLAS.
bye
chriwi
chriwi
Re: 2012 Events Discussion
why is the atlas lumi so much lower than cms?