11th Workshop on Electronics for LHC and future Experiments

Session

Parallel session B1

B1

13 Sept 2005, 11:00

Heidelberg

2. The ATLAS Level-1 Central Trigger Processor

Mr Ralf Spiwoks (CERN)

13/09/2005, 11:00

Triggering

Oral

The ATLAS Level-1 Central Trigger Processor (CTP) combines information from calorimeter and muon trigger processors and makes the final Level-1 Accept (L1A) decision on the basis of lists of selection criteria (trigger menus). In addition to the event-selection decision, the CTP also provides trigger summary information to the data acquisition system and the Level-2 trigger. It further...

83. Configuration of the ATLAS trigger

Joannes HALLER (CERN), Ralf Spiwoks (CERN)

13/09/2005, 11:25

Oral

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a rate of 40 MHz. In order to reduce the data rate, only potentially interesting events are selected by a three-level trigger system. Its first level is implemented in electronics and firmware, and aims at reducing the data output rate to about 75 kHz. The second and third trigger levels are based on...

79. ATLAS Level-1 Trigger Timing and Monitoring

Mr Thilo Pauly (European Organization for Nuclear Research (CERN))

13/09/2005, 11:50

Triggering

Oral

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a bunch-crossing rate of 40 MHz. In order to reduce the data rate, a three-level trigger system selects potentially interesting events. Its first level is implemented in electronics and firmware, and aims at reducing the output rate to under 100 kHz. The Central Trigger Processor (CTP) combines...

13. Implementation and Test of the First-Level Global Muon Trigger of the CMS Experiment

Mr Hannes Sakulin (Institute for High Energy Physics, Vienna, and CERN)

13/09/2005, 12:15

Oral

In CMS, three independent first-level muon trigger systems identify muon candidate tracks. The Global Muon Trigger (GMT) receives up to 16 candidate tracks and combines them using algorithms exploiting the complementarity of the muon systems. The GMT also correlates the muon candidate tracks with calorimeter regions in order to determine muon isolation or confirmation by the calorimeter....

101. THE ALICE CENTRAL TRIGGER PROCESSOR SYSTEM

Dr Orlando Villalobos Baillie (University of Birmingham)

13/09/2005, 12:40

Oral

The Alice Central Trigger Processor is described. The current trigger concept was introduced in 2001 and allows up to 50 trigger inputs at three different levels: level 0 (24 inputs, 1.2 μs latency); level 1 (20 inputs, 6.5 μs latency); level 2 (6 inputs, 88 μs latency). Up to 50 trigger classes (where inputs and destination detectors are specified) can be used simultaneously. Detailed...