Title :
First beam operation of the CMS calorimeter trigger synchronization boards
Author :
David, Andre ; Almeida, Nuno ; Da Silva, José ; Silva, Pedro ; Varela, João
Author_Institution :
LIP, Lisbon
fDate :
April 29 2007-May 4 2007
Abstract :
The CMS experiment uses information from its electromagnetic and hadronic calorimeters and muon detectors to decide whether to readout the whole detector. For such a task to be successful, all trigger primitives pushed through the trigger decision tree must be flawlessly aligned in time for operation at 40 MHz. Both calorimeters in CMS use the Synchronization Link Board for this purpose. In this article we report on the results of tests of this board using realistic beam conditions, which demonstrate the soundness of the adopted architecture and synchronization principle.
Keywords :
muon detection; particle calorimetry; position sensitive particle detectors; readout electronics; synchronisation; trigger circuits; CMS calorimeter; beam operation; electromagnetic calorimeters; hadronic calorimeters; muon detectors; readout system; trigger decision tree; trigger synchronization boards; Clocks; Collision mitigation; Decision trees; Detectors; Electrons; Histograms; Mesons; Phase detection; Synchronization; Timing; CMS; Calorimeter detector; Synchronization; Trigger Systems;
Conference_Titel :
Real-Time Conference, 2007 15th IEEE-NPSS
Conference_Location :
Batavia, IL
Print_ISBN :
978-1-4244-0866-5
Electronic_ISBN :
978-1-4244-0867-2
DOI :
10.1109/RTC.2007.4382862
