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CERN Document Server 2,049 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.42 δευτερόλεπτα. 
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Commissioning of the ALICE readout software for LHC Run 3 / Chapeland, Sylvain (CERN) /ALICE Collaboration
ALICE (A Large Ion Collider Experiment) is a heavy-ion detector studying the physics of strongly interacting matter and the quarkgluon plasma at the CERN LHC (Large Hadron Collider). During the second long shut-down of the LHC, the ALICE detector was upgraded to cope with an interaction rate of 50 kHz in Pb-Pb collisions, producing in the online computing system (O2) a sustained input throughput of 3.5 TB/s.In the past years, the O2/FLP project built the new data-acquisition system capable of handling this load. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 02007 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.02007
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The new ALICE data acquisition system (O$^2$/FLP) for LHC Run 3 / Barroso, Vasco (CERN) ; Alexopoulos, Konstantinos (CERN) ; Boulais, Martin (CERN) ; Chapeland, Sylvain (CERN) ; Costa, Filippo (CERN) ; Divià, Roberto (CERN) ; Fuchs, Ulrich (CERN) ; Guyot, Claire (CERN) ; Huijberts, Jik (Amsterdam U.) ; Konopka, Piotr (CERN) et al.
ALICE (A Large Ion Collider Experiment) has undertaken a major upgrade during the LHC Long Shutdown 2. The increase in the detector data rates led to a hundredfold increase in the input raw data, up to 3.5 TB/s. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 02029 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.02029
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Assessment of the ALICE O2 readout servers / Costa, Filippo (CERN) ; Chapeland, Sylvain (CERN) ; Alexopoulos, Konstantinos (CERN) ; Fuchs, Ulrich (CERN)
The ALICE experiment at CERN LHC (Large Hadron Collider) is undertaking a major upgrade during LHC Long Shutdown 2 in 2019-2020. The raw data input from the detector will then increase a hundredfold, up to 3.4 TB/s. [...]
2020 - 6 p. - Published in : EPJ Web Conf. 245 (2020) 01013 Fulltext from publisher: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019, pp.01013
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Readout software for the ALICE integrated Online-Offline (O$^2$) system / Chapeland, Sylvain (CERN) ; Costa, Filippo (CERN) /ALICE 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 CERN’s LHC (Large Hadron Collider). During the second long shutdown of the LHC, the ALICE detector will be upgraded to cope with an interaction rate of 50 kHz in Pb–Pb collisions, producing in the online computing system (O$^2$) a sustained input throughput of 3 TB/s. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 214 (2019) 01041 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.01041
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ALICE-PHO-DAQ-2020-001
© 2020-2022 CERN 		The ALICE detector's First Level Processor (FLP) system
The ALICE O2 FLP (First Layer Processor) farm cons [...]
11-11-2020
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A programming framework for data streaming on the Xeon Phi / Chapeland, S (CERN) /ALICE
ALICE (A Large Ion Collider Experiment) is the dedicated 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 shut-down of the LHC, the ALICE detector will be upgraded to cope with an interaction rate of 50 kHz in Pb-Pb collisions, producing in the online computing system (O2) a sustained throughput of 3.4 TB/s. [...]
2017 - 8 p. - Published in : J. Phys.: Conf. Ser. 898 (2017) 072007 Fulltext: PDF;
In : 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016, pp.072007
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The ALICE Run 3 online/offline processing / Rohr, David (CERN) /ALICE Collaboration
The ALICE experiment has undergone a major upgrade for LHC Run 3 and will collect data at an interaction rate 50 times larger than before. The new computing scheme for Run 3 replaces the traditionally separate online and offline frameworks by a unified one, which is called O2. [...]
arXiv:2208.07412.- 2022-09-01 - 2 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1038 (2022) 166954 Fulltext: 2208.07412 - PDF; 1-s2.0-S0168900222003990-main - PDF;
In : Vienna Conference on Instrumentation (VCI 2022), Online, Austria, 21 - 25 Feb 2022, pp.166954
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Towards the integrated ALICE Online-Offline (O$^2$) monitoring subsystem / Chibante Barroso, Vasco (CERN) ; Elia, Domenico (INFN, Bari) ; Grigoras, Costin (CERN) ; Gomez Ramirez, Andres (Goethe U., Frankfurt (main)) ; Vino, Gioacchino (INFN, Bari) ; Wegrzynek, Adam (CERN)
ALICE (A Large Ion Collider Experiment) is preparing for a major upgrade of the detector, readout and computing systemsfor LHC Run 3. A new facility called O$^2$ (Online-Offline) will play a major role in data compression and event processing. [...]
2019 - 8 p. - Published in : EPJ Web Conf. 214 (2019) 03043 Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.03043
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Preparation for ALICE data processing and analysis in LHC Run 3 / Eulisse, Giulio (CERN) /ALICE Collaboration
After the ALICE Long Shutdown 2 detector upgrades, including a new silicon tracker and a GEM-based readout for the TPC, the experiment will operate during LHC Run 3 at a peak Pb-Pb collision rate of 50 kHz, about 50 times higher than in previous running periods. To maximise the significance of physics signals with low S/B ratios for which triggering is not possible, all events will be read out and written to permanent storage without any selective trigger. [...]
2022 - 6 p. - Published in : PoS EPS-HEP2021 (2022) 824 Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.824
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The O2 software framework and GPU usage in ALICE online and offline reconstruction in Run 3 / Eulisse, Giulio (CERN) ; Rohr, David (CERN) /ALICE Collaboration
ALICE has upgraded many of its detectors for LHC Run 3 to operate in continuous readout mode recording Pb--Pb collisions at 50 kHz interaction rate without trigger. This results in the need to process data in real time at rates 100 times higher than during Run 2. [...]
arXiv:2402.01205.- 2024 - 11 p.
- Published in : EPJ Web Conf.: 295 (2024) , pp. 05022 Fulltext: 2402.01205 - PDF; document - PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.05022
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