Alice events from first LHC Ion Beams
During the weekend 23-25 October 2009, LHC was injecting proton and ion beams into ALICE. These are events collected by the SPD in self-triggering mode (Pb ion interactions with the LHC monitoring screen).
 |
 |
 |
Left : Run 92918 Ev 59 (23-10-09, 21:35) Pixel hit multiplicity: 24006 Middle: Run 92917 Ev 66 (23-10-09, 21:06) Pixel hit multiplicity: 10217 Right : Run 92918 Ev 72 (23-10-09, 21:46) Pixel hit multiplicity: 9478