A coincidence array demonstrator ASIC for the RD-27 muon trigger (original) (raw)

The RD27 muon trigger co-incidence array demonstrator ASIC

1996

Abstract One aim of the RD27 project is to perform design and R&D work leading to a first level muon trigger for an experiment at the Large Hadron Collider (LHC) at CERN. This paper describes the design, implementation and testing of an ASIC for a trigger demonstrator system. The trigger system is implemented using a set of seven chambers. The low momentum trigger requires hits in three out-of the four inner chambers.

The design of the coincidence matrix asic of the ATLAS barrel level-1 muon trigger

2002

Abstract The ATLAS level-1 muon trigger in the barrel region identifies candidate muon tracks within a programmable transverse momentum range. A system of seven Resistive Plate Chamber detector concentric layers provides the hit information in the bending and non-bending projection. A coincidence of hit in the detector layers within a programmable road is required to generate a trigger signal. The width of the track road in the detector is used to select the transverse momentum cut to be applied.

Performances of the coincidence matrix ASIC of the ATLAS barrel level-1 muon trigger

2005

Abstract The ATLAS Barrel Level-1 muon trigger handles data coming from the Resistive Plate Chamber detectors, structured in three concentric layers inside the air-core barrel toroid. The trigger classifies muons within different programmable transverse momentum thresholds, and tags the identified tracks with the corresponding bunch crossing number. The algorithm looks for hit coincidences within different detector layers inside the programmed geometrical road which defines the transverse momentum cut.

Barrel LVL1 muon trigger coincidence matrix ASIC user requirement document

2000

Abstract The Coincidence Matrix ASIC is the building block of the ATLAS barrel LVL1 Muon Trigger system and of the RPC readout. This documents describes its requirements and will be used during the design and implementation phase of both the device and the LVL1 Trigger high level simulation.

The coincidence matrix ASIC of the level-1 muon barrel trigger of the ATLAS experiment

2003

Abstract The ATLAS barrel level-1 muon trigger processes hit information from the resistive plate chamber detector, identifying candidate muon tracks and assigning them to a programmable p T range and to a unique bunch crossing number. The trigger system uses up to seven detector layers and seeks hit patterns compatible with muon tracks in the bending and nonbending projection. The basic principle of the algorithm is to demand a coincidence of hits in the different chamber layers within a path.

Pattern Comparator Trigger (PACT) for the muon system of the CMS experiment

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996

The general scheme for the fast, pipelined rst level trigger on high pt muons in the CMS detector at LHC is presented. The prototype PACT system was tested in the high momentum muon beams in the RD5 experiment during 1993/94 runs. The obtained eciency curves are shown.

Test beam results and integration of the ATLAS level-1 muon barrel trigger

IEEE Symposium Conference Record Nuclear Science 2004., 2004

The ATLAS Level-1 Muon Trigger will be crucial for the online selection of events with high transverse momentum muons and for its correct association to the bunch-crossing corresponding to the detected events. This system uses dedicated coarse granularity and fast detectors capable of providing measurements in two orthogonal projections. The Resistive Plate Chambers (RPCs) are used in the barrel region (|η| <1). The associated trigger electronics is based on a custom chip, the Coincidence Matrix, that performs space coincidences within programmable roads and time gates. The system is highly redundant and communicates with the ATLAS Level-1 trigger Processor with the MUCTPI Interface. The trigger electronics provides also the Readout of the RPCs. Preliminary results achieved with a full trigger tower with production detectors in the H8 test beam at CERN will be shown. In particular preliminary results on the integration of the barrel muon trigger electronics with the MUCTPI interface and with the ATLAS DAQ system will be discussed.

The VME-based D0 muon trigger electronics

IEEE Transactions on Nuclear Science, 1991

The trigger elecaonics for dte moon system of the l=ettnuah Do detector is described. The hardware bigger consists of VMl5baFed cards designed to find probable tracks in iodividoal chambers and tbeo match these track segments. The fast trigger is highly parallel aod able to discern probable track.3 from about 15,000 trigger cells in m&r 200 tu tivm

Data Format of the RPC Detector of the Muon System

2003

This note presents the RPC data format that is used to collect the Resistive Plate Chamber (RPC) data of the Muon Spectrometer. It covers the data format from the Coincidence Matrix Asic to the input of the RPC Read Out Driver (ROD). ... NoteNumber : ATL-MUON-2003- Version : 1.1 Date : 24-06-2003 Reference : ... This note presents the RPC data format that is used by the readout system of this detector. The data structure reflects the architecture of the barrel LVL1 muon trigger [1] system that is indeed based on RPCs. Information on the geometry of the ...

Diagnostic tools for the RPC muon trigger of the CMS detector-design and test beam results

IEEE Transactions on Nuclear Science, 2000

The resistive plate chambers (RPCs) muon trigger electronics of the Compact Muon Solenoid (CMS) detector performs a number of tasks: synchronization of detector signals, optical data transmission from the detector to the trigger electronics, pattern recognition, muons momentum measurement, selection of track candidates. For the diagnostic purposes, as well as for the calibration and real-time monitoring of the RPC detectors and electronic hardware, a set of flexible diagnostic modules was designed and implemented into the field programmable gate arrays on which the trigger electronics is based. These include: multichannel counters, timing histograms, test pulses generators, diagnostic readout and data spying ("snap-shots" of the data stream). Test results presented in this paper, including tests with Large Hadron Collider-like muon beam, illustrate the performance and the usefulness of these diagnostic modules.