On March 30th at 12.58 LHC delivered to CMS for the first time 7 TeV Ecm collisions. CMS and the Tracker were fully operational and collected about 210.000 Minimum Bias events in ~ 2 hours during the first fill. Everything worked very well, the…
Today LHC delivered to CMS a total of about 5 hours of clean collisions and we have recorded about 11000 min bias BSC triggers. The quality of the data produced and the performance of the Tracker together with the exceptional speed with which we…
This morning between 8:20 and 8:50 for the first time the full Tracker (Strips and Pixel) was turned ON and successfully collected data in Global run with a quiet single beam running in LHC. This is a major achievement. Everything seems all right…
TOB was turned ON today after LHC Opearation declared stable beams for a while. Here are images showings possible tracks from inelastic collisions detected by TOB in run 122294, lumi section 37
Only TOB was turned ON today after LHC Opearation declared stable beams for a while. Below is a 900 GeV p-p collision event seen by the TOB in Run 122314, Evt 8605569.
After further maintenance work on the detector here a few event display animations (make sure your Browser settings allow image animations and click on each image to animate them!).
After further maintenance work on the detector here are 4 new cosmic events from run 119013
After the refurbishment of the Cooling plants (see next article) and 5 weeks of intense re-commissioning work, last night the Tracker joined the MW Global Run at zero tesla. Here are 4 cosmic muon events. A few modules appear a bit noisy still, so…
A series of important milestones have been passed during the last 3 months. With the delivery of refurbished cooling systems, pixels and strip systems have been brought back into operation after long shutdowns. Pixels has been operating since…
In July of last year we successfully inserted the pixel detector inside CMS and successfully integrated and operated it with the rest of the CMS detector during the CRAFT run. Despite the excellent detector performance some problems arose after…
The last two weeks the Forward Pixels (FPIX) detectors were both reinstalled and successfully tested. This activity was very much interleaved with the re-alignment of the central beam pipe. Both activities took place in a fragile and confined…