| CMS Note | |
| Report number | CMS-CR-2011-183 |
| Title | Operation and Performance of the CMS Level-1 Trigger during 7 TeV Collisions |
| Author(s) | Klabbers, Pamela Renee (Wisconsin U., Madison) |
| Publication | 2011 |
| Collaboration | CMS Collaboration |
| Imprint | 19 Sep 2011 |
| Number of pages | 10 |
| Presented at | 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | Trigger |
| Abstract | The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) has been collecting data at center-of-mass energy 7 TeV since March 2010. CMS detects the products of proton beams colliding at a rate of 40 MHz. The Level-1 trigger reduces this collision rate to an output rate of 100 kHz, which is forwarded to the High-Level trigger, a dedicated computer farm, which reduces that further to a rate of 100 Hz, suitable for storage of full event data. The Level-1 trigger uses high-speed custom electronics to combine information from electromagnetic and hadronic calorimeters and three muon detection systems and identifies potential physics objects of interest in only a few microseconds. To ensure good performance of the Level-1 trigger hardware, robust configuration and monitoring software is also required. This talk will concentrate on the performance of the Level-1 trigger in the 2010 and ongoing 2011 collision runs, as well as presenting an overall picture of the hardware and operation. |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
Notice créée le 2011-11-03, modifiée le 2018-06-07
