2012 Events Discussion

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DCWhitworth
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Re: 2012 Events Discussion

Post by DCWhitworth » Mon Mar 12, 2012 4:19 pm

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.
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tomey36
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Re: 2012 Events Discussion

Post by tomey36 » Wed Mar 14, 2012 8:27 am

The progress report link is out of date.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 :D

RocketManKSC
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Re: 2012 Events Discussion

Post by RocketManKSC » Thu Mar 15, 2012 12:00 am

Looks like we have beam. Checkout is just about on schedual. Hope for a great year of data taking.

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chriwi
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Re: 2012 Events Discussion

Post by chriwi » Thu Mar 15, 2012 7:12 am

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

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DCWhitworth
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Re: 2012 Events Discussion

Post by DCWhitworth » Fri Mar 16, 2012 9:45 pm

Just ramped to 4TeV for the first time, although beam 2 was almost immediately dumped.
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chriwi
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Re: 2012 Events Discussion

Post by chriwi » Mon Mar 19, 2012 2:16 pm

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?
bye

chriwi

Kasuha
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Re: 2012 Events Discussion

Post by Kasuha » Tue Mar 20, 2012 9:32 am

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.

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CharmQuark
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Re: 2012 Events Discussion

Post by CharmQuark » Wed Mar 28, 2012 6:36 pm

Helloooooo :crazy:

You lot are way to quiet for my liking :snooty:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

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DCWhitworth
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Re: 2012 Events Discussion

Post by DCWhitworth » Fri Mar 30, 2012 2:06 pm

I see we're about to have collisions, are they the first of 2012 ?
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Celladoor
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Re: 2012 Events Discussion

Post by Celladoor » Fri Mar 30, 2012 4:22 pm

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

Harbles
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Re: 2012 Events Discussion

Post by Harbles » Fri Mar 30, 2012 5:30 pm

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

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DCWhitworth
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Re: 2012 Events Discussion

Post by DCWhitworth » Sun Apr 01, 2012 8:39 am

I don't think I believe the recent Tweets here - https://twitter.com/#!/lhcstatus
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tomey36
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Re: 2012 Events Discussion

Post by tomey36 » Wed Apr 04, 2012 10:42 pm

First stable beams of the year!

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chriwi
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Re: 2012 Events Discussion

Post by chriwi » Thu Apr 05, 2012 7:22 am

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.
bye

chriwi

tomey36
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Re: 2012 Events Discussion

Post by tomey36 » Sun Apr 08, 2012 7:39 pm

why is the atlas lumi so much lower than cms?

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