End of LHC operation. Fin d'exploitation du LHC.

15:41:00™

The LHC experiments are back in business with record energy collisions of 13Tev. Les expériences du LHC reprennent la collecte de données à 13TeV. http://home.web.cern.ch/node/57373

20:37:00™

No beam for a while: Time estimate ~ 2 years. Plus de faisceau au LHC avant environ 2 ans. http://home.web.cern.ch/node/12491

09:42:54™

Protons smash lead ions in first LHC collisions of 2013 : http://t.co/duUVcJax

16:57:42™

Preparations are now underway to go beyond LHC design specification and collide protons with lead ions : http://t.co/7q4BEb8Z

14:49:51™

2013 is sure to be a busy year for CERN, we're looking forward to it! Here are our highlights from 2012 : http://t.co/RNDdIJYz

16:06:45™

The first LHC protons run ends with new milestone : http://t.co/8IDxL0zc

12:36:41™

Highlights from this morning's results from LHC, ATLAS, CMS, LHCb, TOTEM and ALICE : http://t.co/h3ucJgUf

15:57:35™

1st evidence of rare B decay from LHCb http://t.co/gEKmOM82

18:19:22™

Exceeding expectations for 2012, the LHC has now delivered 20 fb-1 (more than a million billion collisions).

16:08:56™

New way to study quark-gluon plasma, the hottest and coolest fluid created in heavy ion collisions with LHC : http://t.co/jsY9BStC

11:58:33™

LHC has reached its target for 2012 by delivering 15 fb-1 (around a million billion collisions).

10:04:31™

LHC collides protons with lead ions for the first time http://public.web.cern.ch/public/

16:09:56™

LHC experiments bring new insight into matter of the primordial universe http://t.co/PZ4bFhZ4

10:05:51™

CERN experiments observe particle consistent with long-sought Higgs boson http://t.co/MBjIwytL

03:40:00™

LHC‬ has now delivered more collisions in 2012 than it did in the whole of 2011, more data = more potential discoveries.

11:52:00™

LHC records in past week: peak luminosity=6x10^33 cm-2s-1, max luminosity in a fill=190 pb-1 & almost 1 fb-1 a week to experiments !

07:46:00™

LHC has already delivered about 1 fb-1 of data (around 100 trillion collisions) to experiments in 2012. This took until June in 2011.

11:46:00™

Record luminosity in ATLASexperiment & CMSexperiment, each LHC beam now has 1380 bunches of protons - the maximum planned for 2012 !

10:35:00™

LHC physics data taking gets underway at new record collision energy of 8 TeV http://t.co/oML6qIxi

09:59:00™

Record-breaking 4 TeV beams in the LHC over the weekend (22h40 CET on Friday to be precise). First collisions at 4 TeV planned for April.

09:30:00™

First beam of the year circulating in the LHC just before midnight. Let the 2012 LHC run begin!

18:00:39™

Last beam of 2012 extracted, and what a year is was !

11:03:08™

LHC has delivered 2 inverse femtobarns of data already this year; peak luminosity is now over 2x10^33.

05:14:58™

LHC now running with 1380 bunches per beam.

13:39:48™

LHC now running with 1236 bunches per beam.

12:35:03™

LHC achieves 2011 data milestone. Le LHC atteint son objectif pour 2011 : http://ow.ly/5kg8R

19:58:23™

LHC now running with 1092 bunches per beam. Le LHC fonctionne maintenant avec 1092 paquets de protons par faisceau.

11:56:02™

LHC reached a luminosity of 10^33 around 2am this morning. Significant milestone. Luminosity explained on CERN's blog: http://ow.ly/50tdz

20:54:50™

LHC now running with 912 bunches per beam, one month since the record-setting run with 480 bunches.

23:57:48™

LHC now running with 624 bunches per beam. Data flowing...

10:50:05™

LHC sets world record beam intensity. Le LHC bat le record du monde de l’intensité de faisceau : http://bit.ly/dPR3CB

18:12:49™

LHC now running with 336 bunches of particles per beam

18:06:42™

It's a year to the day since the #LHC research programme got underway: http://ow.ly/4pDwV

22:13:24™

LHC sets new luminosity record of over 2.5x10^32 - peak in 2010 was 2.0x10^32.

21:42:21™

Great performance last weekend from #LHC, now running with 136 bunches. 2011 data set already approaching 1/5 the total achieved in 2010.

14:58:04™

LHC now running with 64 bunches

18:59:14™

LHC is running with 32 bunches. Colliding stable beams.

21:13:19™

LHC declared stable beams at 18:05 this evening. 2011 physics running is underway.

12:00:00™

LHC topped 1000 bunches and 10^14 particles per beam for the first time over the weekend.

09:20:18™

The first 7 TeV #LHC collisions of 2011 were recorded last night, round midnight, with low intensity beams.

08:30:09™

This week's CERN Bulletin - Beams are back in the LHC: http://ow.ly/44bdt

17:36:01™

Latest news from the LHC technical stop in this week's CERN Bulletin: http://ow.ly/3DWPb

20:16:21™

The LHC's last beam of 2010 was extracted at 18:00 this evening after a great first year of physics...

17:06:37™

CMS experiment at LHC observes Z bosons for the first time in heavy-ion collisions http://bit.ly/avA2Oh

14:11:02™

ALICE experiment announces first results from LHC's lead-ion collisions http://bit.ly/bzVD9y

16:13:23™

LHC reaches 121 bunches of lead ions per beam, the goal for 2010, and the experiments have first inverse microbarn of heavy-ion data.

10:29:21™

It's been a good start for lead ions in the LHC - after a successful night setting up, both beams are circulating.

15:29:48™

CERN completes transition to lead-ion running at the LHC http://bit.ly/9kNTkM

08:17:42™

The LHC's first lead ion collisions were seen by the ALICE, ATLAS and CMS experiments last night. Stable beams coming soon.

14:28:59™

The LHC enters a new phase http://bit.ly/c5OAi5

11:44:56™

With 368 bunches per beam the LHC yesterday doubled target collision rate for 2010 giving 6000 inverse nanobarns of data in just one fill.

15:17:29™

LHC protons 2010: mission accomplished http://bit.ly/abOvu2

16:49:26™

LHC data taking takes another big step forward http://ow.ly/2JmFp

17:41:34™

The CMS experiment at the LHC sees potentially new and interesting effect: http://ow.ly/2HxZy

08:52:59™

Last night's #LHC fill provided as much data as the total delivered up to the ICHEP conference in Paris last month.

14:55:55™

Another record-breaking #LHC fill has just finished after 14 hours of collisions. This one delivered the most intense beams to date.

10:04:02™

LHC takes intensity higher - now running with 48 bunches of protons per beam, increasing the rate experiments collect data.

17:38:36™

Lots more collisions as LHC steps up to 25 bunches per beam http://bit.ly/95YRlh

07:31:33™

LHC continues to break records. Now running with 7 on 7 bunches. FInd out more at: http://bit.ly/9V0XC5

17:11:07™

Collisions provided by the LHC to experiments over the weekend doubled the total since 7 TeV collisions began on March 30.

09:11:06™

Here's the latest news on the LHC 2010 run http://bit.ly/aC0CAY

17:04:18™

Adding the tally from last weekend's runs, the LHC experiments have observed around half a billion collisions to date.

09:00:06™

It's time for physics at the LHC: http://ow.ly/1Fevm ... as the machine continues to make great progress: http://ow.ly/1Fewi

12:49:36™

LHC experiments savour 10-fold luminosity increase: a taste of things to come.

17:48:35™

Running with successful 'squeezed' beams, the LHC is providing 10 times more luminosity, giving more collisions for the experiments.

16:26:10™

With tens of millions of collisions recorded, LHC experiments spot rarer members of the particle family.

18:33:29™

Word of the week at the LHC: squeeze! Squeezed beams give higher collision rates, and the studies continue.

08:58:04™

LHC making progress with studies to increase collision rates.

10:32:34™

Good running at the LHC over Easter weekend, including a period of 21 hours at 3.5 TeV per beam.

08:25:41™

Great #LHC physics run overnight with 8 hours of stable beams. Now going in to beam injection and extraction studies.

13:01:12™

Experiment have seen collisions!!!!!!!!!!!First time in the history!!!!!!!!!!!! World record!!!!!!!!

11:17:07™

Beam studies continuing, including more 3.5 TeV beam overnight.

10:38:41™

LHC sets new record – accelerates beams to 3.5 TeV ! Nouveau record d'énergie pour le LHC : deux faisceaux accélérés à 3,5 TeV !

23:16:54™

LHC: both beams ramped to 1.18 TeV just after 9 pm CET.

12:42:07™

LHC performing well during detailed beam commissioning at 450 GeV.

09:49:50™

The LHC is on its way again. First beam of 2010 circulated in each direction by 04.10 CET.

09:50:47™

During technical stop LHC being prepared for running at 3.5 TeV per beam: http://bit.ly/4rDb1S

15:59:04™

2009 ends on a high note for CERN http://bit.ly/7MpGpv

18:43:05™

The LHC's first run came to a close at 18.03 CET today after a successful series of 'firsts'. Back in business next year.

12:00:00™

A very good weekend for the LHC: well over 1 million collisions at 900 GeV and about 50 000 collisions at 2.36 TeV. Plus d'un million de collisions à 900 GeV et environ 50 000 collisions à 2.36 TeV.

14:19:59™

LHC has started higher intensity running at 450 GeV. Target is 1 miilion events for the experiments.

11:56:12™

LHC beam commissioning continues, aiming towards higher intensities at 450 GeV.

10:18:26™

LHC has started running with stable beams at 450 GeV (4 bunches per beam). Collision data is being recorded by the experiments.

11:16:08™

LHC beam-commissioning progressing, with first "multi-bunch" beams last night (2 bunches per beam).

09:42:25™

LHC running, with beam-commissioning under way again since yesterday evening, following power cut on CERN main site.

14:42:17™

The LHC has run with solenoid magnets in the ALICE, ATLAS and CMS detectors turned up to full field.

00:42:00™

A new record ! Both beams in LHC reach 1.18 TeV. Nouveau record ! Les deux faisceaux du LHC atteignent 1,18 TeV.

23:21:03™

World Record !! Tonight at about 22:00 the LHC accelerated a beam of protons to 1180 GeV - a new record energy !

09:46:05™

The #LHC accelerated a beam to 540 GeV overnight.

13:25:23™

TWO BEAMS ARE CURRENTLY CIRCULATING IN THE LHC !

15:28:27™

The anticlockwise beam is now in and circulating... working on improving the beam lifetime.

10:11:10™

So no collisions planned yet. We are not in a hurry with the secrets of the Universe :) Just a short respite for the Higgs boson !

22:02:04™

We have captured it! First circulating beam of 2009!

11:43:51™

Yesterday the LHC was handed over for operation. Teams are now preparing for the first circulating beams of 2009.

17:41:00™

Particles have gone half way round the LHC http://bit.ly/2VAiJ9

17:15:51™

LHC "bird-bread" strike causes waves in the world press! For the facts, read: http://bit.ly/3y3HWv

17:18:04™

Particles are back in the LHC ! Les particules sont de retour dans le LHC ! http://bit.ly/OPoOm

12:00:00™

LHC: Bientôt des collisions! Le redémarrage, étape par étape http://bit.ly/3vajxr

08:53:54™

Magnet powering tests begin. Les premiers aimants du LHC sont mis sous tension.

10:55:11™

Final sector of LHC being cooled down. Le dernier secteur du LHC est en cours de refroidissement.

12:12:53™

The LHCb experiment catches a glimpse of particles from the SPS. Plus more details from the LHC: http://tinyurl.com/n6mqlo

16:15:37™

Last magnet lowered today.

15:34:57™

First proton beam in the next stage of the accelerator chain, the SPS.

15:03:28™

PS has beam ahead of schedule.

14:46:29™

LHC news: Sector 5–6 consolidation work has finished. Starting preparations to cool the sector back down - http://tinyurl.com/cpz38v

15:25:23™

Repairs completed on the LHC's cryogenic pipeline. For more details check out the latest from the LHC: http://tinyurl.com/dy4awu

17:24:25™

CERN has been quiet for a while, but we'll make up for that. The LHC is under repair, and we're posting updates weekly.

08:29:38™

CERN has inaugurated the LHC: http://tinyurl.com/5vxpqm

10:27:33™

CERN has released an analysis of LHC incident: http://tinyurl.com/4er6r7

18:36:12™

End of the LHC's first week of operation. Commissioning going well with a beam circulating for 30 minutes last night. Next update Monday.

13:25:00™

Historic moment. The LHC first beam has just circulated. Amazing moment.

09:13:00™

LHC first beam day. Beams at the door of the LHC, ready for first injection.