Abstract
The Overlap Muon Track Finder (OMTF) is the new system developed during the upgrade of the CMS experiment which includes the upgrade of its Level-1 trigger. It uses the novelty approach to finding muon candidates based on data received from three types of detectors: RPC, DT, and CSC . The upgrade of the trigger system requires also upgrade of the associated Data Acquisition (DAQ) system. The OMTF DAQ transmits the data from the connected detectors that were the basis for the Level-1 trigger decision. To increase its diagnostic potential, it may also transmit the data from a few bunch crossings (BXes) preceding or following the BX, in which the L1 trigger was generated. The paper describes the technical concepts and solutions used in the OMTF DAQ system. The system is still under development. However, it successfully passed the first tests.
Highlights
It is possible to increase the number of output queues if a single BX may belong to a higher number of events due to the change of the trigger rules or number of BX-es transmitted before or after the trigger.The system in current state handles the RPC data
The Overlap Muon Track Finder (OMTF) is the new system developed during the upgrade of the CMS experiment which includes the upgrade of its Level-1 trigger
It uses the novelty approach to finding muon candidates basing on data received from three types of detectors: RPC, DT and CSC
Summary
Except for the hit data from three detectors, the event fragment should contain additional information like the output of the OMTF trigger algorithm and the version of the firmware. DAQ, the data from different input links are time aligned with the L1A signal using the dedicated shift registers.
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