Conveners
Data Acquisition, Trigger and Controls: I
- Niko Neufeld (CERN)
Data Acquisition, Trigger and Controls: II
- Andrew Norman (Fermilab)
Data Acquisition, Trigger and Controls: III
- Tass Belias (Institute for Astroparticle Physics (GR))
Data Acquisition, Trigger and Controls: IV
- Vivian O'Dell (Fermi National Accelerator Lab. (US))
Data Acquisition, Trigger and Controls: V
- Andrew Norman (Fermilab)
Data Acquisition, Trigger and Controls: VI
- Tass Belias (Institute for Astroparticle Physics (GR))
Data Acquisition, Trigger and Controls: VII
- Niko Neufeld (CERN)
Data Acquisition, Trigger and Controls: VIII
- Vivian O'Dell (Fermi National Accelerator Lab. (US))
Rainer Schwemmer
(CERN)
14/10/2013, 13:30
Data acquisition, trigger and controls
Oral presentation to parallel session
The LHCb Data Acquisition system reads data from over 300 read-out boards and distributes them to more than 1500 event-filter servers. It uses a simple push-protocol over Gigabit Ethernet. After filtering, the data is consolidated into files for permanent storage using a SAN-based storage system.
Since the beginning of data-taking many lessons have been learned and the reliability and...
Jim Kowalkowski
(Fermilab)
14/10/2013, 13:50
Data acquisition, trigger and controls
Oral presentation to parallel session
The artdaq data acquisition software toolkit has been developed within the Fermilab Scientific Computing Division to meet the needs of current and future experiments. At its core, the toolkit provides data transfer, event building, and event analysis functionality, the latter using the art event analysis framework.
In the last year, functionality has been added to the toolkit in the areas...
Kael Hanson
(Universitรฉ Libre de Bruxelles)
14/10/2013, 14:10
Data acquisition, trigger and controls
Oral presentation to parallel session
The IceCube Neutrino Observatory is a cubic kilometer-scale neutrino detector built into the ice sheet at the geographic South Pole. The online system for IceCube comprises subsystems for data acquisition, online filtering, supernova detection, and experiment control and monitoring. The observatory records astrophysical and cosmic ray events at a rate of approximately 3 kHz and selects the...
Kunihiro Nagano
(High Energy Accelerator Research Organization (JP))
14/10/2013, 14:30
Data acquisition, trigger and controls
Oral presentation to parallel session
The ATLAS trigger system has been used for the online event selection for three years of LHC data-taking and is preparing for the next run. The trigger system consists of a hardware level-1 (L1) and a software high-level trigger (HLT). The high-level trigger is currently implemented in a region-of-interest based level-2 (L2) stage and a event filter (EF) operating after even building with...
Mr
Arnim Balzer
(DESY, University Potsdam)
14/10/2013, 15:45
Data acquisition, trigger and controls
Oral presentation to parallel session
The High Energy Stereoscopic System (H.E.S.S.) is a system of five Imaging Atmospheric Cherenkov Telescopes (IACTs) located in the Khomas Highland in Namibia. It measures cosmic gamma-rays with very high energies (VHE; > 100 GeV) using the Earthโs atmosphere as a calorimeter. The H.E.S.S. array has entered Phase II in September 2012 with the inauguration of a fifth telescope that is larger and...
Jaroslav Zalesak
(Acad. of Sciences of the Czech Rep. (CZ))
14/10/2013, 16:05
Data acquisition, trigger and controls
Oral presentation to parallel session
The NOvA experiment has developed a data acquisition system that is able to continuously digitize and produce a zero bias streaming readout for the more than 368,000 detectors cells that constitute the 14 kTon far detector. The NOvA DAQ system combines custom built frontend readout and data aggregation hardware, with advances in enterprise class networking to continuously deliver data to...
Dr
Christopher Jones
(Fermi National Accelerator Lab. (US))
14/10/2013, 16:25
Data acquisition, trigger and controls
Oral presentation to parallel session
The DarkSide-50 dark matter experiment has recently been constructed and commissioned at the Laboratori Nazionali del Gran Sasso (LNGS). The data acquisition system for the experiment was jointly constructed by members of the LNGS Research Division and the Fermilab Scientific Computing Division, and it makes use of commercial, off-the-shelf hardware components and the artdaq DAQ software...
Dr
Radoslaw Karabowicz
(GSI)
14/10/2013, 16:45
Data acquisition, trigger and controls
Oral presentation to parallel session
The PANDA experiment will be running up to 2.10^7 antiproton-proton
collisions per second at energies reaching 15 GeV.
The lack of simple features distinguishing the interesting events from background,
as well as strong pileup of events' data streams make the use of a
hardware trigger impossible. As a consequence the whole data stream of
about 300 GB/s has to be analyzed online, i.e:...
Dr
Igor Oya
(Humboldt University)
14/10/2013, 17:25
Data acquisition, trigger and controls
Oral presentation to parallel session
The Cherenkov Telescope Array (CTA) is one of the major ground-based
astronomy projects being pursued and will be the largest facility for
ground-based gamma-ray observations ever built. CTA will consist of
two arrays: one in the Northern hemisphere composed of about 20
telescopes, and the other one in the Southern hemisphere composed of
about 100 telescopes, both arrays containing...
Evan Niner
(Indiana University)
14/10/2013, 17:45
Data acquisition, trigger and controls
Oral presentation to parallel session
The NOvA detector utilizes not only a high speed streaming readout system which capable of reading out the waveforms of over 368,000 detector cells, but a distributed timing system that is able drive and program the frontend clock systems of each of these readout to allow each hit in the detector to be time stamped with a universal wall clock time. This system is used to perform an absolute...
Alessandro Lonardo
(INFN, Roma I (IT))
15/10/2013, 13:30
Data acquisition, trigger and controls
Oral presentation to parallel session
The integration of GPUs in trigger and data acquisition systems is currently being investigated in several HEP experiments.
At higher trigger levels, when the efficient many-core parallelization of event reconstruction algorithms is possible, the benefit of reducing significantly the number of the farm computing nodes is evident.
At lower levels, where tipically severe real-time...
Petr Zejdl
(CERN)
15/10/2013, 13:50
Data acquisition, trigger and controls
Oral presentation to parallel session
The CMS data acquisition (DAQ) infrastructure collects data from more than 600 custom detector Front End Drivers (FEDs). In the current implementation data is transferred from the FEDs via 3.2 Gbs electrical links to custom interface boards, which transfer the data to a commercial Myrinet network based on 2.5 Gbps optical links. During 2013 and 2014 the CMS DAQ system will undergo a major...
Rainer Schwemmer
(CERN)
15/10/2013, 14:10
Data acquisition, trigger and controls
Oral presentation to parallel session
The architecture of the data acquisition for the LHCb upgrade is designed to allow for data transmission from the front-end electronics directly to the readout boards synchronously with the bunch crossing at the rate of 40 MHz. To connect the front-end electronics to the readout boards the upgraded detector will require order of 12000 GBT based (3.2 Gb/s radiation hard CERN serializers)...
Josef Novy
(Czech Technical University (CZ))
15/10/2013, 14:30
Data acquisition, trigger and controls
Oral presentation to parallel session
The COMPASS is a fixed target experiment, situated at the Super Proton Synchrotron (SPS) accelerator in the north area of the CERN laboratory, in Geneva, Switzerland. The experiment was commissioned during 2001, data-taking started in 2002. The data acquisition system of the experiment is based on the DATE soft-ware package, originally developed for the ALICE experiment. In 2011, after the...
Markus Frank
(CERN)
15/10/2013, 15:45
Data acquisition, trigger and controls
Oral presentation to parallel session
The LHCb experiment at the LHC accelerator at CERN collects collisions of particle bunches at 40 MHz. After a first level of hardware trigger with output of 1 MHz, the physically interesting collisions are selected by running dedicated trigger algorithms in the High Level Trigger (HLT) computing farm.
This farm consists of up to roughly 25000 CPU cores in roughly 1600 physical nodes each...
Tomasz Bold
(AGH Univ. of Science and Technology, Krakow)
15/10/2013, 16:05
Data acquisition, trigger and controls
Oral presentation to parallel session
The high level trigger (HLT) of the ATLAS experiment at the LHC selects interesting proton-proton and heavy ion collision events for the wide ranging ATLAS physics program. The HLT examines events selected by the level-1 hardware trigger using a combination of specially designed software algorithms and offline reconstruction algorithms. The flexible design of the entire trigger system was...
Dr
Remi Mommsen
15/10/2013, 16:25
Data acquisition, trigger and controls
Oral presentation to parallel session
The DAQ system of the CMS experiment at the LHC is redesigned during the accelerator shutdown in 2013/14. To reduce the interdependency of the DAQ system and the high-level trigger (HLT), we investigate the feasibility of using a file-system-based HLT. Events of ~1 MB size are built at the level-1 trigger rate of 100 kHz. The events are assembled by ~50 builder units (BUs). Each BU writes the...
Mr
Pierre Vande Vyvre
(CERN)
15/10/2013, 16:45
Data acquisition, trigger and controls
Oral presentation to parallel session
for the ALICE O2 Collaboration
ALICE (A Large Ion Collider Experiment) is a heavy-ion detector
studying the physics of strongly interacting matter and the
quark-gluon plasma at the CERN LHC (Large Hadron Collider).
After the second long shutdown of the LHC, the ALICE detector will
be upgraded in order to make high precision measurements of rare
probes at low pT, which cannot be...
Alberto Gianoli
(Universita di Ferrara (IT))
15/10/2013, 17:25
Data acquisition, trigger and controls
Oral presentation to parallel session
The performance of "level 0" (L0) triggers is crucial to reduce and appropriately select the large amount of data produced by detectors in high energy physics experiments. This selection must be accomplished as fast as possible, since data staging within detectors is a critical resource. For example, in the NA62 experiment at CERN, the event rate is estimated at around 10 MHz, and the...
Leo Piilonen
(Virginia Tech)
15/10/2013, 17:45
Data acquisition, trigger and controls
Oral presentation to parallel session
I will describe the first-level trigger in the Belle II experiment that examines the hit patterns in the K-long and muon (KLM) detector to find evidence for
compact clusters (indicative of a K-long meson hadronic shower) or tracks (indicative of a charged particle from the interaction point or of a cosmic ray).
The algorithm is implemented in a VIRTEX6 FPGA on a Universal Trigger Module...
Daniele Trocino
(Northeastern University (US))
17/10/2013, 11:00
Data acquisition, trigger and controls
Oral presentation to parallel session
The CMS experiment has been designed with a 2-level trigger system: the Level 1 Trigger, implemented on custom-designed electronics, and the High Level Trigger (HLT), a streamlined version of the CMS offline reconstruction software running on a computer farm. A software trigger system requires a tradeoff between the complexity of the algorithms running on the available computing power, the...
Johannes Albrecht
(Technische Universitaet Dortmund (DE))
17/10/2013, 11:20
Data acquisition, trigger and controls
Oral presentation to parallel session
The 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 resource limitations imply that only 5 kHz can be written to storage for offline analytsis. For this reason the LHCb data acquisition system -- trigger -- plays a key role in selecting signal events and rejecting background. In contrast to...
Andrew Norman
(Fermilab)
17/10/2013, 11:40
Data acquisition, trigger and controls
Oral presentation to parallel session
The NOvA experiment is unique in its stream readout and triggering design. The experiment utilizes a sophisticated software triggering system that is able to select portions of the raw data stream to be extracted for storage, in a manner completely asynchronous to the actual readout of the detector. This asynchronous design permits NOvA to tolerate trigger decision latencies ranging from...
Nicoletta Garelli
(SLAC)
17/10/2013, 12:00
Data acquisition, trigger and controls
Oral presentation to parallel session
The ATLAS experiment, aimed at recording the results of LHC proton-proton collisions, is upgrading its Trigger and Data Acquisition (TDAQ) system during the current LHC first long
shutdown. The purpose of such upgrade is to add robustness and flexibility to the selection and the conveyance of the physics data, simplify the maintenance of the infrastructure, exploit new
technologies and,...
Andre Georg Holzner
(Univ. of California San Diego (US))
17/10/2013, 13:30
Data acquisition, trigger and controls
Oral presentation to parallel session
The Data Acquisition system of the Compact Muon Solenoid 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, networking, and storage infrastructure infrastructure will have reached the end of their lifetime. In order to handle higher LHC...
Pierrick Hanlet
(Illinois Institute of Technology)
17/10/2013, 13:50
Data acquisition, trigger and controls
Oral presentation to parallel session
The Muon Ionization Cooling Experiment (MICE) is a demonstration
experiment to prove the feasibility of cooling a beam of muons for
use in a Neutrino Factory and/or Muon Collider. The MICE cooling
channel is a section of a modified Study II cooling channel in which
we will measure a 10% reduction in beam emittance. In order to ensure
a reliable measurement, MICE will measure the beam...
Ms
Silvia Amerio
(University of Padova & INFN)
17/10/2013, 14:10
Data acquisition, trigger and controls
Oral presentation to parallel session
One of the most important issues facing particle physics experiments at hadron colliders is real-time selection of interesting events for offline storage. Collision frequencies do not allow all events to be written to tape for offline analysis, and in most cases, only a small fraction can be saved. Typical trigger systems use commercial computers in the final stage of processing. Much of the...
Hannes Sakulin
(CERN)
17/10/2013, 14:38
Data acquisition, trigger and controls
Oral presentation to parallel session
We present the automation mechanisms that have been added to the Data Acquisition and Run Control systems of the Compact Muon Solenoid (CMS) experiment during Run 1 of the LHC, ranging from the automation of routine tasks to automatic error recovery and context-sensitive guidance to the operator. These mechanisms helped CMS to maintain a data taking efficiency above 90% and to even improve it...
