A5105764498- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Distributed and Parallel Computing Systems
- Neutrino Physics Research
- Advanced Data Storage Technologies
- Cosmology and Gravitation Theories
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Scientific Computing and Data Management
- Black Holes and Theoretical Physics
- advanced mathematical theories
- Particle Accelerators and Free-Electron Lasers
- Algorithms and Data Compression
- Big Data Technologies and Applications
- Digital Radiography and Breast Imaging
- Structural Analysis of Composite Materials
- Experimental Learning in Engineering
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- AI-based Problem Solving and Planning
European Organization for Nuclear Research
2005-2025
Joint Institute for Nuclear Research
2015-2024
Northern Illinois University
2023-2024
Institute of Science and Technology
2023-2024
A. Alikhanyan National Laboratory
2024
Institute of High Energy Physics
2024
Atlas Scientific (United States)
2024
Institute for High Energy Physics
2023-2024
The University of Adelaide
2018-2023
New York University
2023
The ATLAS EventIndex system comprises the catalogue of all events collected, processed or generated by experiment at CERN LHC accelerator, and associated software tools to collect, store query this information. records several billion particle interactions every year operation, processes them for analysis generates even larger simulated data samples; a global is needed keep track location each event record be able search retrieve specific in-depth investigations. Each includes summary...
The Online Software is the global system software of ATLAS data acquisition (DAQ) system, responsible for configuration, control and information sharing DAQ System. A test beam facility offers detectors possibility to study important performance aspects as well proceed on way final system. Last year, three subdetectors ATLAS-separately combined-were successfully using their datataking. In this paper, we describe different components together with usage at beam.
A fast, efficient and comprehensive monitoring system is a vital part of any HEP experiment. This paper describes the software framework that will be used during ATLAS data taking to monitor state acquisition quality physics in The has been implemented by Online Software group Trigger&Data Acquisition (TDAQ) project already for several years test beams at CERN. inter-process communication via CORBA, which provides portability between different operating systems programming languages....
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> During 2006 and spring 2007, integration commissioning of trigger data acquisition (TDAQ) equipment in the ATLAS experimental area has progressed. Much work focused on a final prototype setup consisting around eighty computers representing subset full TDAQ system. There have been series technical runs using this setup. Various tests run including those where 6 k Level-1 preselected simulated...
The unprecedented size and complexity of the ATLAS TDAQ system requires a comprehensive flexible control system. Its role ranges from so-called run- control, e.g. starting stopping data taking, to error handling fault tolerance. It also includes initialization verification overall Following traditional approach hierarchical customizable controllers has been proposed. For final all functionality will be therefore available in distributed manner, with possibility local customization. After...
The ATLAS collaboration at CERN operated a combined test beam (CTB) from May until November 2004. prototype of data acquisition system (DAQ) was used to integrate other subsystems into common CTB setup. Data were collected synchronously all the detectors, which represented nine different detector technologies. Electronics and software first level trigger Event selection algorithms high integrated with tested real data. possibility operate remote Filter farm synchronized Trigger Acquisition...
The ATLAS Trigger and Data Acquisition (TDAQ) is a large, distributed system composed of several thousands interconnected computers tens software processes (applications). Applications produce large amount operational messages at the order 104 per second, which need to be reliably stored delivered TDAQ operators in quasi real-time manner, also available for post-mortem analysis by experts.
During 2006 and spring 2007, integration commissioning of trigger data acquisition (TDAQ) equipment in the ATLAS experimental area has progressed. Much work focused on a final prototype setup consisting around eighty computers representing subset full TDAQ system. There have been series technical runs using this setup. Various tests run including ones where 6k Level-1 pre-selected simulated proton-proton events processed loop mode through dataflow chains. The system included readout buffers...
The ATLAS experiment is preparing a major change in the conditions data infrastructure view of LHC Run 4. In this paper we describe ongoing changes database architecture which have been implemented for 3, and motivations on-going developments deployment new system (called CREST Conditions Representational State Transfer, as reference to REST architectures). main goal set up parallel full scale testing before end 3.
In the ATLAS experiment at LHC, output of readout hardware specific to each subdetector will be transmitted buffers, located on custom made PCI cards ("ROBINs"). The data consist fragments events accepted by first-level trigger a maximum rate 100 kHz. Groups four ROBINs hosted in about 150 read-out subsystem (ROS) PCs. Event are forwarded request via Gigabit Ethernet links and switches second-level or event builder. this paper discussion functionality real-time properties ROS is combined...
The ATLAS EventIndex was designed in 2012-2013 to provide a global event catalogue and limited event-level metadata for analysis groups users during the LHC Run 2 (2015-2018). It provides good reliable service initial use cases (mainly picking) several additional ones, such as production consistency checks, duplicate detection measurements of overlaps trigger chains derivation datasets. 3, starting 2021, will see increased data-taking simulation rates, with which current infrastructure would...
Trigger and data acquisition (TDAQ) systems for modern HEP experiments are composed of thousands hardware software components depending on each other in a very complex manner. Typically, such operated by non-expert shift operators, which not aware system functionality details. It is therefore necessary to help the operator control minimize down-time providing knowledge-based facilities automatic testing verification also error diagnostics recovery. For this purpose, diagnostic framework was...
The ATLAS collaboration at CERN operated a combined test beam (CTB) from May until November 2004. prototype of data acquisition system (DAQ) was used to integrate other subsystems into common CTB setup. Data were collected synchronously all the detectors, which represented nine different detector technologies. Electronics and software first level trigger Event selection algorithms high integrated with tested real data. A possibility operate remote event filter farm synchronized TDAQ also...
The ATLAS EventIndex provides a global event catalogue and event-level metadata for analysis groups users. LHC Run 3, starting in 2022, will see increased data-taking simulation production rates, with which the current infrastructure would still cope but may be stretched to its limits by end of 3. This talk describes implementation new core storage service that provide at least same functionality as one data ingestion search increasing volumes stored data. It is based on set HBase tables,...
Abstract The ATLAS experiment at the Large Hadron Collider (LHC) operated very successfully in years 2008 to 2013, a period identified as Run 1. achieved an overall data-taking efficiency of 94%, largely constrained by irreducible dead-time introduced accommodate limitations detector read-out electronics. Out 6% only about 15% could be attributed central trigger and DAQ system, out these, negligible fraction was due Control Configuration sub-system. Despite these achievements, order improve...
Abstract The ATLAS experiment has produced hundreds of petabytes data and expects to have one order magnitude more in the future. This are spread among computing Grid sites around world. EventIndex is complete catalogue all events, real simulated, keeping references permanent files that contain a given event any processing stage. It provides means select access distributed storage system, support for completeness consistency checks trigger offline selection overlap studies. employs various...
The Process Management component of the online software future ATLAS experiment data acquisition system is presented. purpose Manager to perform basic job control components system. It capable starting, stopping and monitoring status those on processors independent underlying operating Its architecture designed basis a server client model using CORBA based communication. part relies C++ agent objects acting as an interface between local applications. Some major design challenges agents were...