Operation and Performance of the CMS Level-1 Trigger during 7 TeV Collisions

9 Jun 2011, 17:00
30m
Mayfair (Sheraton Hotel)

Mayfair

Sheraton Hotel

Oral Presentation Trigger and Data Acquisition Systems Trigger and DAQ Systems

Speaker

Pamela Renee Klabbers (University of Wisconsin)

Description

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.

Author

Pamela Renee Klabbers (University of Wisconsin)

Presentation materials