Conveners
Online Computing
- Niko Neufeld (CERN)
Online Computing
- Sylvain Chapeland (CERN)
Online Computing
- Sylvain Chapeland (CERN)
Online Computing
- Remi Mommsen (Fermi National Accelerator Lab. (US))
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Mr Vasco Chibante Barroso (CERN)21/05/2012, 13:30Online Computing (track 1)ParallelA Large Ion Collider Experiment (ALICE) is the heavy-ion detector designed to study the physics of strongly interacting matter and the quark-gluon plasma at the CERN Large Hadron Collider (LHC). Since its successful start-up in 2010, the LHC has been performing outstandingly, providing to the experiments long periods of stable collisions and an integrated luminosity that greatly exceeds the...Go to contribution page
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David Michael Rohr (Johann-Wolfgang-Goethe Univ. (DE))21/05/2012, 13:55Online Computing (track 1)ParallelThe ALICE High Level Trigger (HLT) is capable of performing an online reconstruction of heavy-ion collisions. The reconstruction of particle trajectories in the Time Projection Chamber (TPC) is the most compute intensive step. The TPC online tracker implementation combines the principle of the cellular automaton and the Kalman filter. It has been accelerated by the usage of graphics cards...Go to contribution page
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Diego Casadei (New York University (US))21/05/2012, 14:20Online Computing (track 1)ParallelThe ATLAS trigger has been used very successfully to collect collision data during 2009-2011 LHC running at centre of mass energies between 900 GeV and 7 TeV. The three-level trigger system reduces the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of about 300 Hz. The first level uses custom electronics to reject most background collisions, in less...Go to contribution page
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Dr Giuseppe Avolio (University of California Irvine (US))21/05/2012, 14:45Online Computing (track 1)ParallelThe Trigger and DAQ (TDAQ) system of the ATLAS experiment is a very complex distributed computing system, composed of O(10000) of applications running on more than 2000 computers. The TDAQ Controls system has to guarantee the smooth and synchronous operations of all TDAQ components and has to provide the means to minimize the downtime of the system caused by runtime failures, which are...Go to contribution page
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Andrea Negri (Universita e INFN (IT))21/05/2012, 15:10Online Computing (track 1)ParallelThe ATLAS experiment at the Large Hadron Collider at CERN relies on a complex and highly distributed Trigger and Data Acquisition (TDAQ) system to gather and select particle collision data at unprecedented energy and rates. The TDAQ is composed of three levels which reduces the event rate from the design bunch-crossing rate of 40 MHz to an average event recording rate of about 200 Hz. The...Go to contribution page
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Hannes Sakulin (CERN)21/05/2012, 16:35Online Computing (track 1)ParallelThe data-acquisition (DAQ) system of the CMS experiment at the LHC performs the read-out and assembly of events accepted by the first level hardware trigger. Assembled events are made available to the high-level trigger (HLT), which selects interesting events for offline storage and analysis. The system is designed to handle a maximum input rate of 100 kHz and an aggregated throughput of 100...Go to contribution page
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Andrea Petrucci (CERN)21/05/2012, 17:00Online Computing (track 1)ParallelThe Data Acquisition (DAQ) system of the Compact Muon Solenoid (CMS) experiment at CERN assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of 100 GB/s. By the time the LHC restarts after the 2013/14 shut-down, the current compute nodes and networking infrastructure will have reached the end of their lifetime. We are presenting design studies for an...Go to contribution page
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Robert Gomez-Reino Garrido (CERN)21/05/2012, 17:25Online Computing (track 1)ParallelThe Compact Muon Solenoid (CMS) is a CERN multi-purpose experiment that exploits the physics of the Large Hadron Collider (LHC). The Detector Control System (DCS) ensures a safe, correct and efficient experiment operation, contributing to the recording of high quality physics data. The DCS is programmed to automatically react to the LHC changes. CMS sub-detectorโs bias voltages are set...Go to contribution page
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Mariusz Witek (Polish Academy of Sciences (PL))21/05/2012, 17:50Online Computing (track 1)ParallelThe LHCb experiment is a spectrometer dedicated to the study of heavy flavor at the LHC. The rate of proton-proton collisions at the LHC is 15 MHz, but disk space limitations mean that only 3 kHz can be written to tape for offline processing. For this reason the LHCb data acquisition system -- trigger -- plays a key role in selecting signal events and rejecting background. In contrast to...Go to contribution page
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Andrew Norman (Fermilab)22/05/2012, 16:35Online Computing (track 1)ParallelThe NOvA experiment at Fermi National Accelerator Lab, has been designed and optimized to perform a suite of measurements critical to our understanding of the neutrinoโs properties, their oscillations and their interactions. NOvA presents a unique set of data acquisition and computing challenges due to the immense size of the detectors, the data volumes that are generated through the...Go to contribution page
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Qiming Lu (Fermi National Accelerator Laboratory)22/05/2012, 17:00Online Computing (track 1)ParallelA complex running system, such as the NOvA online data acquisition, consists of a large number of distributed but closely interacting components. This paper describes a generic realtime correlation analysis and event identification engine, named Message Analyzer. Its purpose is to capture run time abnormalities and recognize system failures based on log messages from participating components....Go to contribution page
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Matt Toups (Columbia University)22/05/2012, 17:25Online Computing (track 1)ParallelThe Double Chooz (DC) reactor anti-neutrino experiment consists of a neutrino detector and a large area Outer Veto detector. A custom data-acquisition (DAQ) system written in Ada language for all the sub-detector in the neutrino detector systems and a generic object oriented data acquisition system for the Outer Veto detector were developed. Generic object-oriented programming was also used to...Go to contribution page
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Linda Coney (University of California, Riverside)22/05/2012, 17:50Online Computing (track 1)ParallelThe Muon Ionization Cooling Experiment (MICE) is designed to test transverse cooling of a muon beam, demonstrating an important step along the path toward creating future high intensity muon beam facilities. Protons in the ISIS synchrotron impact a titanium target, producing pions which decay into muons that propagate through the beam line to the MICE cooling channel. Along the beam line,...Go to contribution page
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Dr William Badgett (Fermilab)24/05/2012, 16:35Online Computing (track 1)ParallelThe CDF Collider Detector at Fermilab ceased data collection on September 30, 2011 after over twenty five years of operation. We review the performance of the CDF Run II data acquisition systems over the last ten of these years while recording nearly 10 fb-1 of proton-antiproton collisions with a high degree of efficiency. Technology choices in the online control and configuration systems...Go to contribution page
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Gordon Watts (University of Washington (US))24/05/2012, 17:00Online Computing (track 1)ParallelThe Tevatron Collider, located at the Fermi National Accelerator Laboratory, delivered its last 1.96 TeV proton-antiproton collisions on September 30th, 2011. The DZERO experiment continues to take cosmic data for final alignment for several more months . Since Run 2 started, in March 2001, all DZERO data has been collected by the DZERO Level 3 Trigger/DAQ System. The system is a modern,...Go to contribution page
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Dr Krzysztof Korcyl (Polish Academy of Sciences (PL))24/05/2012, 17:25Online Computing (track 1)ParallelA novel architecture is being proposed for the data acquisition and trigger system for PANDA experiment at the HESR facility at FAIR/GSI. The experiment will run without the hardware trigger signal and use timestamps to correlate detector data from a given time window. The broad physics program in combination with high rate of 2 10^7 interactions require very selective filtering...Go to contribution page
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Dr Dirk Hoffmann (Universite d'Aix - Marseille II (FR))24/05/2012, 17:50Online Computing (track 1)ParallelWe present the prototyping of a 10Gigabit-Ethernet based UDP data acquisition (DAQ) system that has been conceived in the context of the Array and Control group of CTA (Cherenkov Telescope Array). The CTA consortium plans to build the next generation ground-based gamma-ray instrument, with approximately 100 telescopes of at least three different sizes installed on two sites. The genuine camera...Go to contribution page