ALICE moves into warp drive

F. Carena, W. Carena, S. Chapeland, V. Chibante Barroso, F. Costa, E. Dénes, R. Divià, U. Fuchs, A. Grigore, G. Simonetti, C. Soós, A. Telesca, P. Vande Vyvre, B. Von Haller

Research output: Contribution to journalConference article


A Large Ion Collider Experiment (ALICE) is the heavy-ion detector designed to study the physics of strongly interacting matter and the quark-gluon plasma at the CERN Large Hadron Collider (LHC). Since its successful start-up in 2010, the LHC has been performing outstandingly, providing to the experiments long periods of stable collisions and an integrated luminosity that greatly exceeds the planned targets. To fully explore these privileged conditions, we aim at maximizing the experiment's data taking productivity during stable collisions. We present in this paper the evolution of the online systems towards helping us understand reasons of inefficiency and address new requirements. This paper describes the features added to the ALICE Electronic Logbook (eLogbook) to allow the Run Coordination team to identify, prioritize, fix and follow causes of inefficiency in the experiment. Thorough monitoring of the data taking efficiency provides reports for the collaboration to portray its evolution and evaluate the measures (fixes and new features) taken to increase it. In particular, the eLogbook helps decision making by providing quantitative input, which can be used to better balance risks of changes in the production environment against potential gains in quantity and quality of physics data. It will also present the evolution of the Experiment Control System (ECS) to allow on-the-fly error recovery actions of the detector apparatus while limiting as much as possible the loss of integrated luminosity. The paper will conclude with a review of the ALICE efficiency so far and the future plans to improve its monitoring.

Original languageEnglish
Article number012005
JournalJournal of Physics: Conference Series
Issue numberPART 1
Publication statusPublished - Jan 1 2012
EventInternational Conference on Computing in High Energy and Nuclear Physics 2012, CHEP 2012 - New York, NY, United States
Duration: May 21 2012May 25 2012


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Carena, F., Carena, W., Chapeland, S., Chibante Barroso, V., Costa, F., Dénes, E., Divià, R., Fuchs, U., Grigore, A., Simonetti, G., Soós, C., Telesca, A., Vande Vyvre, P., & Von Haller, B. (2012). ALICE moves into warp drive. Journal of Physics: Conference Series, 396(PART 1), [012005].