ALICE - A Large Ion Collider Experiment

LHC restart - Saturday 21 November 2009

20:42 During 20 min of "stable beam" 4 events were recorded. Here is a high multiplicity event from beam halo interaction (red points: TOF clusters; blue points: ITS clusters; violet lines: reconstructed tracks; HMPID, TPC and PHOS geometry shown for reference.; run 101266)

20:36 Circulating beam

17:42 Beam induced event taken during the long 1 hour circulating beam (16:42 GMT). We got roughly 15 of those during 1 hour..One sees one track scraping along the silicon pixel detector and many more hits scattered all over the place.

17: 37 Caught an event in coincidence with the beam crossing; could be proton interaction with the beam pipe; but could also be cosmics

17:00 Circulating beam 1 - Trying to catch some beam gas events

14:27 Injections about to restart

Some TED shots during the morning