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1.
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Getting prepared for the LHC Run2: the PIC Tier-1 case
/ Flix, J (PIC, Bellaterra ; Madrid, CIEMAT) ; Acción, E (PIC, Bellaterra ; Barcelona, IFAE) ; Acín, V (PIC, Bellaterra ; Barcelona, IFAE) ; Acosta, C (PIC, Bellaterra ; Barcelona, IFAE) ; Casals, J (PIC, Bellaterra ; Madrid, CIEMAT) ; Caubet, M (PIC, Bellaterra ; Madrid, CIEMAT) ; Cruz, R (PIC, Bellaterra ; Barcelona, IFAE) ; Delfino, M (PIC, Bellaterra ; Barcelona, Autonoma U.) ; López, F (PIC, Bellaterra ; Madrid, CIEMAT) ; Pacheco, A (PIC, Bellaterra ; Barcelona, IFAE) et al.
The Large Hadron Collider (LHC) experiments will collect unprecedented data volumes in the next Physics run, with high pile-up collisions resulting in events that require a complex processing. Hence, the collaborations have been required to update their Computing Models to optimize the use of the available resources and control the growth of resources, in the midst of widespread funding restrictions, without penalizing any of the Physics objectives. [...]
2015 - 8 p.
- Published in : J. Phys.: Conf. Ser. 664 (2015) 052014
IOP Open Access article: PDF;
In : 21st International Conference on Computing in High Energy and Nuclear Physics, Okinawa, Japan, 13 - 17 Apr 2015, pp.052014
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2.
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3.
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Design, Results, Evolution and Status of the ATLAS simulation in Point1 project.
/ Ballestrero, Sergio (University of Johannesburg, Department of Physics) ; Fressard-Batraneanu, Silvia Maria (CERN) ; Brasolin, Franco (INFN Bologna and Universita' di Bologna, Dipartimento di Fisica e Astronomia) ; Contescu, Alexandru Cristian (University Politehnica Bucharest) ; Fazio, Daniel (CERN) ; Di Girolamo, Alessandro (CERN) ; Lee, Christopher Jon (University of Johannesburg, Department of Physics) ; Pozo Astigarraga, Mikel Eukeni (CERN) ; Scannicchio, Diana (University of California, Irvine) ; Sedov, Alexey (Barcelona Tier-1) et al.
During the LHC long shutdown period (LS1), that started in 2013, the simulation in Point1 (Sim@P1) project takes advantage in an opportunistic way of the trigger and data acquisition (TDAQ) farm of the ATLAS experiment. The farm provides more than 1500 computer nodes, and they are particularly suitable for running event generation and Monte Carlo production jobs that are mostly CPU and not I/O bound. [...]
ATL-SOFT-SLIDE-2015-078.-
Geneva : CERN, 2015 - 1 p.
Fulltext: ATL-SOFT-SLIDE-2015-078 - PDF; CHEP2015_SP1_poster_v22 - PDF; External link: Original Communication (restricted to ATLAS)
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4.
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The LHC Tier1 at PIC: experience from first LHC run
/ Flix, J (Madrid, CIEMAT ; PIC, Bellaterra) ; Perez-Calero Yzquierdo, A (Madrid, CIEMAT ; PIC, Bellaterra) ; Acción, E (Barcelona, IFAE ; PIC, Bellaterra) ; Acin, V (Barcelona, IFAE ; PIC, Bellaterra) ; Acosta, C (Barcelona, IFAE ; PIC, Bellaterra) ; Bernabeu, G (Madrid, CIEMAT ; PIC, Bellaterra) ; Bria, A (Barcelona, IFAE ; PIC, Bellaterra) ; Casals, J (Madrid, CIEMAT ; PIC, Bellaterra) ; Caubet, M (Madrid, CIEMAT ; PIC, Bellaterra) ; Cruz, R (Barcelona, IFAE ; PIC, Bellaterra) et al.
This paper summarizes the operational experience of the Tier1 computer center at Port d’Informació Científica (PIC) supporting the commissioning and first run (Run1) of the Large Hadron Collider (LHC). The evolution of the experiment computing models resulting from the higher amounts of data expected after the restart of the LHC are also described..
2013
- Published in : EPJ Web Conf. 60 (2013) 20054
Published version, Open Access article: PDF;
In : 1st Large Hadron Collider Physics Conference, Barcelona, Spain, 13 - 18 May 2013, pp.20054
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5.
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ATLAS Distributed Computing Operation Shift Teams experience during the discovery year and beginning of the Long Shutdown 1
/ Sedov, A (Barcelona, IFAE) ; Di Girolamo, A (CERN) ; Negri, G (CERN) ; Sakamoto, H (Tokyo U., ICEPP) ; Schovancová, J (Brookhaven Natl. Lab.) ; Smirnov, Y (Brookhaven Natl. Lab.) ; Vartapetian, A (Texas U., Arlington) ; Yu, J (Texas U., Arlington)
ATLAS Distributed Computing Operation Shifts were evolved to meet new requirements. [...]
ATL-SOFT-PROC-2013-043.
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2014. - 5 p.
Original Communication (restricted to ATLAS) - Full text
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6.
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ATLAS Distributed Computing Operation Shift Teams experience during the discovery year and beginning of the Long Shutdown 1
/ Sedov, A (Port d'Informacio Cientifica, and Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona) ; Di Girolamo, A (CERN) ; Negri, G (CERN) ; Sakamoto, H (International Center for Elementary Particle Physics and Department of Physics, The University of Tokyo) ; Schovancová, J (Brookhaven National Laboratory (BNL)) ; Smirnov, Y (Brookhaven National Laboratory (BNL)) ; Vartapetian, A (The University of Texas at Arlington) ; Yu, J (The University of Texas at Arlington)
Poster : ATLAS Distributed Computing Operation Shift Teams experience during the discovery year and beginning of the Long Shutdown 1..
ATL-SOFT-SLIDE-2013-811.-
Geneva : CERN, 2013 - 1 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013
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7.
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Lessons learned from the ATLAS performance studies of the Iberian Cloud for the first LHC running period.
/ Sánchez-Martínez, V (Valencia U., IFIC) ; Borges, G (LIP, Lisbon) ; Borrego, C (Barcelona, IFAE) ; del Peso, J (Madrid, IFT) ; Delfino, M (PIC, Bellaterra ; Barcelona, Autonoma U.) ; Gomes, J (LIP, Lisbon) ; González de la Hoz, S (Valencia U., IFIC) ; Pacheco Pages, A (Barcelona, IFAE) ; Salt, J (Valencia U., IFIC) ; Sedov, A (Barcelona, IFAE ; PIC, Bellaterra) et al.
In this contribution we describe the performance of the Iberian (Spain and Portugal) ATLAS cloud during the first LHC running period (March 2010-January 2013) in the context of the GRID Computing and Data Distribution Model. [...]
ATL-SOFT-PROC-2013-007.
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2013.
Original Communication (restricted to ATLAS) - Full text
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8.
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Lessons learned from the ATLAS performance studies of the Iberian Cloud for the first LHC running period.
/ Sánchez-Martínez, V ; Borges, G ; Borrego, C ; del Peso, J ; Delfino, M ; Gomes, J ; González de la Hoz, S ; Pacheco Pages, A ; Salt, J ; Sedov, A et al.
Poster: Lessons learned from the ATLAS performance studies of the Iberian Cloud for the first LHC running period. Conference: CHEP2013 - Amsterdam..
ATL-SOFT-SLIDE-2013-765.-
Geneva : CERN, 2013 - 1 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013
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9.
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10.
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Study of Various Photomultiplier Tubes with Muon Beams And Cerenkov Light Produced in Electron Showers
/ Chatrchyan, Serguei (YEREVAN) ; Khachatryan, Vardan (YEREVAN) ; Sirunyan, Albert M (YEREVAN) ; Mossolov, Vladimir (MINSK-NCPHEP) ; Shumeiko, Nikolai (MINSK-NCPHEP) ; De Wolf, Eddi A (ANTWERPEN) ; Ochesanu, Silvia (ANTWERPEN) ; Roland, Benoit (ANTWERPEN) ; Van Haevermaet, Hans (ANTWERPEN) ; Van Mechelen, Pierre (ANTWERPEN) et al.
The PMTs of the CMS Hadron Forward calorimeter were found to generate a large size signal when their windows were traversed by energetic charged particles. This signal, which is due to Cerenkov light production at the PMT window, could interfere with the calorimeter signal and mislead the measurements. [...]
CMS-NOTE-2010-003.-
Geneva : CERN, 2010 - 17 p.
- Published in : JINST 5 (2010) P06002
Fulltext: PDF; IOP Open Access Article: PDF;
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