NDLI: The ATLAS Level-1 trigger timing setup

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2005 14th IEEE-NPSS Real Time Conference (IEEE Cat. No.05EX1084C)

2005 14th IEEE-NPSS Real Time Conference

Table of contents

Closing words from the chairman

Conference committees

ATCA: its performance and application for real time systems

SpaceWire: a spacecraft onboard network for real-time communications

Performance simulation studies of the clear-PEM DAQ/trigger system

C/VHDL codesign for LHCb VELO zero suppression algorithms

Data acquisition board with optical gigabit interface

FPGA based real-time image segmentation for medical systems and data processing

Common tools for large experiment controls - a common approach for deployment, maintenance, and support

The new Tevatron beam position monitor front-end software

Real-time estimation of radial location of magnetic islands in a tokamak from the associated temperature fluctuations

A study of readout electronics based on TDC for the international linear collider TPC detector

The ATLAS Level-1 central trigger processor

Use of interactive SVG maps and Web services to monitor CMS tracker

The ATLAS liquid argon calorimeter read-out system

Development of an on-line data quality monitor for the relativistic heavy-ion experiment ALICE

The data acquisition system of ClearPET/spl trade/ Neuro - a small animal PET scanner

Implementation of the timing, trigger and control system of the CMS experiment

The GNAM monitoring system and the OHP histogram presenter for ATLAS

Connectivity representation in the LHCb Online Configuration Database

Real-time control of the plasma instabilities in Frascati tokamak upgrade

The thin gap chambers database experience in test beam and preparations for ATLAS

Digital control system for the TCV tokamak

Real-time multi-DSP based VME system for feedback control on the TCV tokamak

New embedded digital front-end for high resolution PET scanner

A flexible data acquisition module for high resolution PET camera

Synchronization of processes in a distributed real time system exemplified by the control system of the fusion experiment WENDELSTEIN 7-X

Real time digital signal processing implementation for an APD-based PET scanner with phoswich detectors

Tools for the automation of large distributed control systems

Real-time system for dosimetry in IORT (intra operative radiation therapy)

The NEMO floor control module

A VLSI full custom ASIC front end for the optical module of the NEMO underwater neutrino detector

The control system for the front-end electronics of the ALICE time projection chamber

Embedded controllers for local board-control

A commodity solution based high data rate asynchronous trigger system for hadron collider experiments

Performance of the H1 fast track trigger - operation and commissioning results

A new approach to object oriented programming for real-time targets

cMsg - a publish/subscribe package for real-time and online control systems

The trigger supervisor of the ARGO-YBJ detector

The 2 Tbps "data to surface" system of the CMS data acquisition

Using Java management extension standards as the basis for IceCube's experiment control

Addressing the software and hardware trade-offs of an embedded distributed system: the case of the ANTARES data acquisition and detector control

Serial data link on advanced TCA back plane

Real time data processing of the TileCal calorimeter of the ATLAS detector

An FPGA based general purpose data acquisition controller

The new DAQ system for WASA at COSY

FPGA-based system-on-chip designs for real-time applications in particle physics

A firewire based data acquisition system for small volume positron emission tomographs

BTeV trigger/DAQ innovations

TNT Digital Pule Processor

Real time pulse shape analysis for the /spl Upsi/-interactions in AGATA

Tracking in the silicon tracker system of the CBM experiment using Hough transform

ATLAS DataFlow: the read-out subsystem, results from trigger and data-acquisition system testbed studies and from modeling

Ethernet based distributed data acquisition system for a small animal PET

The application of tiny triplet finder (TTF) in BTeV pixel trigger

Application of fuzzy logic to real-time scheduling

The implementation and application of statecharts in real-time system in high energy physics

Event building at multi-kHz rates: lessons learned from the PHENIX event builder

The RatCAP conscious small animal PET tomography

GETB, a gigabit Ethernet application platform: its use in the ATLAS TDAQ network

NARVAL a modular distributed data acquisition system with Ada 95 and RTAI

High performance gigabit Ethernet switches for DAQ systems

Deployment and use of the ATLAS DAQ in the combined test beam

Optimization of event-building implementation on top of gigabit Ethernet

The ALICE central trigger system

Deployment of the ATLAS high level trigger

Pre-production validation of the ATLAS Level-1 calorimeter trigger system

Development and tests of the event filter for the ATLAS experiment

The RPC Level-1 muon trigger of the ATLAS experiment at the LHC

Investigation of the networking performance of remote real-time computing farms for ATLAS trigger DAQ

The RTES project - BTeV, and beyond

Benchmarks and implementation of the ALICE high level trigger

FutureDAQ for CBM: on-line event selection

Large CPU-farm implementation in a HEP experiment with tight constraints (June 2005)

Application specific real-time microkernel in hardware

General-purpose framework for real time control in nuclear fusion experiments

Distributed real time control in RFX-mod nuclear fusion experiment: commissioning and first results

P2P-based data system for the EAST experiment

High speed data exchange protocol for modern distributed data acquisition systems based on OPC XML-DA

KONOE, a toolkit for an object-oriented online environment, with gate package

A 48 channel pulse shape digitizer with DSP

Development of the optical multiplexer board prototype for data acquisition in TileCal experiment

A new readout-controller for COSY-DAQ based on the Virtex-II Pro /spl Gt/system on a chip/spl Lt/-FPGA

A FPGA-based multi-rate interpolator with real-time rate change for a JET test-bench system

Corrected position estimation in PET detector modules with multi-anode PMTs using neural networks

Digital signal reconstruction in the ATLAS hadronic tile calorimeter

A simple Linux-based platform for rapid prototyping of experimental control systems

Design and test issues of a FPGA based data acquisition system for medical imaging using PEM

Performance of the ATLAS SCT readout system

Do's and don'ts with the Agilent's G-Link chipset

Electronics dedicated to multi-anode photomultiplier tubes for imaging scintigraphic devices

An atomic magnetometer for brain activity imaging

Ion channel properties searching by SQUID with real time histogram

Fast feedback control for plasma positioning with a PCI hybrid DSP/FPGA board

High-speed automatic microscopy for real time tracks reconstruction in nuclear emulsion

Merging several separate data acquisition systems at GANIL

An efficient hardware design for rejecting common mode in a group of adjacent channels of silicon microstrip sensors used in high energy physics experiments

A real time low complexity codec for use in low Earth orbit small satellite missions

New synchronisation system for experiments at COSY

FPGA implementation of a greedy algorithm for set covering

Filtering and extracting features from infrasound data

Muon identification with the event filter of the ATLAS experiment at CERN LHC's

Real-time determination of suprathermal electrons local emission profile from hard X-ray measurements in Tore Supra

Circular regression for approximation of particle tracks

The rationale of the angular interpolation to filtered-backprojection algorithm for reconstruction from limited views

Small program for fast data acquisition in Windows environment

Development of Web-based DAQ system for the DCBA experiment

Acquisition-analysis system for the DANCE (detector for advanced neutron capture experiment) BaF/sub 2/ gamma-ray calorimeter

A new data acquisition system for a backscattering neutron spectrometer

Object-oriented architecture for digital pulse shape acquisition from AZ/4/spl pi/ detectors: a case study

Simulation of a biomedical wireless acquisition system for recording the GI motor activity

Real time data acquisition and online signal processing for magnetoencephalography

Real-time data acquisition and maximum-likelihood estimation for gamma cameras

Digital data acquisition for the EDELWEISS-II dark-matter experiment

The data acquisition system of the Stockholm Educational Air Shower Array

PXI-based architecture for real time data acquisition and distributed dynamical data processing

Upgrade of the data acquisition and control system of the ASDEX upgrade microwave reflectometer

The online system of the PHENIX experiment in the RHIC Run 5

A gigabit/s data acquisition system

The ROD Crate DAQ of the ATLAS data acquisition system

The read-out driver for the ATLAS MDT muon precision chambers

A VLSI for deskewing and fault tolerance in LVDS links

VPS - versatile power supply control system

Gas and safety control systems for drift and He chambers in FINUDA

An advanced interlock solution for TTF2/XFEL RF stations

An optical calibration manipulator system

A cooperative JAVA Web-start environment for shared multi-user remote operation

A full featured monitoring, control and data management system for liquid metal coolant loops

Access management in the ATLAS TDAQ

Web based online event displays for KASCADE-Grande

3D temperature monitoring for ultra-high vacuum spectrometers in KATRIN experiment

The ATLAS experience with databases for structured data with temporal and hierarchical order

The ATLAS Level-1 trigger timing setup

The trigger system of the ICARUS experiment

High rate packets transmission on Ethernet LAN using commodity hardware

Novel network protocol for event building and its analysis

Integrated upstream parasitic event building architecture for BTeV level 1 pixel trigger system

ATLAS TDAQ dataflow network architecture analysis and upgrade proposal

Implementation and performance of the seeded reconstruction for the ATLAS event filter selection software

Overview of the high-level trigger electron and photon selection for the ATLAS experiment at the LHC

On the potential use of remote computing farms in the ATLAS TDAQ system

A review of technologies for the transport of digital data in recent physics experiments

1999 IEEE Conference on Real-Time Computer Applications in Nuclear Particle and Plasma Physics. 11th IEEE NPSS Real Time Conference. Conference Record (Cat. No.99EX295)

The ATLAS Level-1 trigger timing setup

Content Provider	IEEE Xplore Digital Library
Author	Amaral, P.B. Ellis, N. Farthouat, P. Gallno, P. Haller, J. Krasznahorkay, A. Maeno, T. Pauly, T. Lima, H.P. Arcas, I.R. Schuler, G. de Seixas, J.M. Spiwoks, R. Teixeira, R.T. Wengler, T.
Copyright Year	2005
Description	Author affiliation: CERN, Geneva (Amaral, P.B.; Ellis, N.; Farthouat, P.; Gallno, P.; Haller, J.; Krasznahorkay, A.; Maeno, T.; Pauly, T.)
Abstract	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 physics processes. The first trigger level is implemented in electronics and firmware. It aims at reducing the output rate to less than 100 kHz. The central trigger processor (CTP) combines information from the calorimeter and muon trigger processors and makes the final Level-1-Accept (L1A) decision. It is a central element in the timing setup of the experiment. Three aspects are considered in this article: the timing setup with respect to the Level-1 trigger, with respect to the experiment, and with respect to the world. Trigger signals from the muon and calorimeter trigger processors have to be synchronized in phase with respect to the local clock, and aligned in terms of the bunch crossing they originate from. The Level-1 latency is defined as the time between the collision and the arrival of the L1A at the sub-detectors. It is fixed and less than 2.5 musec. During this time, the data from all sub-detectors are stored in front-end pipeline buffers. In order to guarantee read-out of the same collision, the pipeline lengths must be carefully tuned in order to match the Level-1 latency using several strategies with and without particle beam. The CTP further calculates a UTC time stamp derived from a GPS-based time-stamping system with a stability of 5 nsec and high absolute time precision. The time stamp will allow us to correlate ATLAS events with those in other particle-physics or astronomic detectors at CERN or elsewhere
File Size	324339
File Format	PDF
ISBN	0780391837
DOI	10.1109/RTC.2005.1547526
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-04
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Timing Detectors Mesons Delay Buffer storage Pipelines Large Hadron Collider Physics Microprogramming Signal processing
Content Type	Text
Resource Type	Article

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