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NEWS FROM THE FIRST HEAVY ION RUN

The LHC proton-proton programme stopped on Thursday 4.11.2010 at 8 am.

After a short access the commissioning of the lead ion beam started in the afternoon of Thursday 4.11.2010

To find out the main points concerning the commissioning and preparation for lead lead collisions read here

Have a look at photographs of the ion source

You can consult the LHC heavy ion commissioning programme here

Video from simulated Pb-Pb collision at sqrt(s)=2.76 TeV (mp4)

Video from simulated Pb-Pb collision at sqrt(s)=2.76 TeV (AVI - Windows Media Player, VLC player)

computed with the BAMPS transport code at the Institut für Theoretische Physik of the Goethe-Universitaet Frankfurt

Thursday 4.11.2010 16:43 It seems they have started injecting ions

firstinjection

Thursday 4.11.2010 after 22:00

firs pb beam b1 circulating in lhc

Friday 5.11.2010 from 1:30 am on : two ion beams circulating in LHC

two circulating beams

Saturday 6.11.2010 23:00 Two lead ion beams in LHC .. this fill is to find collisions

..they are ramping up the energy

fill for first collisions

Sunday 7.11.2010 1:00 the beams have been squeezed, the collimators adjusted..

collisions in 3 exp

2:40 Collimators settings ongoing. ALICE is taking data with the Silicon Detectors - the Time Projection Chamber is off since no "stable beams" have been declared..

50 000 events were recorded

Monday 8.11.2010 11:20 : Stable beams for ions

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