LHC portal

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.

The progress report link is out of date.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

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

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

Just ramped to 4TeV for the first time, although beam 2 was almost immediately dumped.

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?

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.

Helloooooo

You lot are way to quiet for my liking

I see we're about to have collisions, are they the first of 2012 ?

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

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

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

First stable beams of the year!

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.

why is the atlas lumi so much lower than cms?