Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Instrumentation 2

HK 3.2: Vortrag

Montag, 23. März 2015, 15:00–15:15, M/HS2

Online Calibration of the ALICE-TPC in LHC-Run 2 — •Ivan Vorobyev for the ALICE collaboration — Technische Universität München, Excellence Cluster Universe

The Time Projection Chamber (TPC) is the main tracking detector at the ALICE Experiment at the LHC. Its performance and calibration directly influence the calibration of other detectors in the ALICE central barrel. To address this issue during the first LHC running period, a two-step offline calibration was employed, in which first the TPC and then the other detectors were calibrated. However, such a scheme will not be feasible for the Run 3 period, because the TPC will run in a continuous readout mode, producing a vast amount of data that needs to be significantly compressed on the fly for data storage. This will require the calibration step to run online within the High Level Trigger environment. In this talk, the online calibration concept and the implementation for the ALICE-TPC already in Run 2 will be discussed.