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dc.contributor.authorValentino, Gianluca-
dc.contributor.authorDe Cataldo, Giacinto-
dc.contributor.authorFranco, Antonio-
dc.contributor.authorHostettler, Michi-
dc.contributor.authorVisnyei, Orsolya-
dc.identifier.citationValentino, G., De Cataldo, G., Franco, A., Hostettler, M., & Visnyei, O. (2019). Performance of the ALICE luminosity levelling software architecture in the Pb-Pb physics run. ICALEPCS2019, New York.en_GB
dc.description.abstractLuminosity leveling is performed in the ALICE experi-ment of the Large Hadron Collider (LHC) in order to limitthe event pile-up probability, and ensure a safe operation forthe detectors. It will be even more important during Run3 when 50 KHz Pb ion-Pb ion (Pb-Pb) collisions will bedelivered in IP2. On the ALICE side, it is handled by theALICE-LHC Interface project, which also ensures an onlinedata exchange between ALICE and the LHC. An automated luminosity leveling algorithm was developed for the proton-proton physics run, and was also deployed for the Pb-Pb run with some minor changes following experience gained. The algorithm is implemented in the SIMATIC WinCC SCADA environment, and determines the leveling step from measured beam parameters received from the LHC, and the luminosity recorded by ALICE. In this paper, the softwarearchitecture of the luminosity leveling software is presented,and the performance achieved during the Pb-Pb run and Vander Meer scans is discussed.en_GB
dc.subjectLarge Hadron Collider (France and Switzerland)en_GB
dc.subjectAlice (Computer)en_GB
dc.titlePerformance of the ALICE luminosity levelling software architecture in the Pb-Pb physics runen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.bibliographicCitation.conferenceplaceNew York, NY, USA, 5-11/10/2019en_GB
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