TWEPP-07 Topical Workshop on Electronics for Particle Physics

Session

Parallel session B1 - Trigger 1 Atlas

B1

4 Sept 2007, 10:55

Prague

5. The ATLAS Level1 Level2 Trigger Integration

Jinlong Zhang (Argonne National Laboratory (ANL))

04/09/2007, 10:55

Oral

The ATLAS detector is designed to study the proton proton collision at the center of mass energy of 14 TeV with the bunch crossing rate of 40 MHz. In order to reduce this rate down to the level at which the events will be fully reconstructed, the multi-level trigger system is being deployed. The level 1 (LVL1) trigger reduces the rate down to 75 kHz via the custom-built electronics. The...

69. The ATLAS Level-1 Central Trigger

Dr Ralf Spiwoks (CERN)

04/09/2007, 11:20

Oral

The ATLAS Level-1 Central Trigger consists of the Muon-to-Central-Trigger- Processor Interface (MUCTPI), the Central Trigger Processor (CTP), and the Timing, Trigger and Control (TTC) partitions of the sub-detectors. The MUCTPI connects the output of the muon trigger system to the CTP. At every bunch crossing it receives information on muon candidates from each of the 208 muon trigger...

53. First Measurements with the ATLAS Level-1 Calorimeter Trigger Preprocessor System

Victor Andrei (Kirchhoff-Institut fuer Physik/ Universitaet Heidelberg")

04/09/2007, 11:45

Oral

The level-1 calorimeter trigger is a hardware-based system with the goal of identifying high-pt objects within an overall latency of 2.5us. It is composed of a preprocessor system which digitises 7200 analogue input channels, determines the bunch-crossing of the interaction and provides a fine timing and energy calibration; and two subsequent digital processors. The Preprocessor plays...

77. Commissioning of the Jet/Energy-sum and Cluster Processors for the ATLAS Level-1 Calorimeter Trigger System

Richard STALEY (University of Birmingham)

04/09/2007, 12:10

Oral

The ATLAS first-level calorimeter trigger is a hardware-based system designed to identify high-pt jets, electron/photon and tau candidates, and to measure total and missing Et. The trigger consists of a preprocessor system which digitises 7200 analogue inputs, and two digital multi-crate processor systems which find jets, measure energy sums, and identify localised energy deposits...

65. The ATLAS Barrel Level-1 Muon Trigger Sector-Logic/Rx off-detector trigger and acquisition board

Dr Federico Spila (INFN, Sezione di Roma I)

04/09/2007, 12:35

Oral

The ATLAS experiment uses a system of three concentric Resistive Plate Chambers (RPC) detector layers for the level-1 muon trigger in the air-core barrel toroid region. The algorithm looks for hit coincidences within different detector layers inside the programmed geometrical road which defines the transverse momentum cut. The on-detector electronics that provides the trigger and detector...