Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 60: Instrumentation XVI

HK 60.2: Talk

Thursday, March 31, 2022, 14:15–14:30, HK-H5

Quality Control of the upgraded ALICE TPC — •Stefan Heckel for the ALICE collaboration — Technische Universität München

About three years ago, in December 2018, the LHC and concomitant the ALICE experiment went into a long shutdown. ALICE has used this time for major upgrades including new readout chambers for the Time Projection Chamber (TPC). The TPC can now be operated in continuous read-out mode, enabling much higher data-taking rates than before. Going along with the detector upgrades, the entire software framework for data taking, reconstruction and analysis is developed anew. Within this framework, the Quality Control (QC) of the detectors plays a crucial role to guarantee a successful data-taking campaing in the upcomming LHC Run 3.

In this talk, the development of the QC for the upgraded ALICE TPC will be summarised. Given the challenging data-taking conditions, the QC has to be able to assess the quality of the data synchronously during data taking. For this purpose, the data will be analysed online with trendings of important quantities as a function of time and automatic checking procedures raising alarms in case of any outlier behaviour observed. The QC results will be visulized using different tools for the ALICE shift crew in the ALICE control room and for the TPC experts. In October 2021, the upgraded ALICE has taken physics data for the first time during a pilot-beam test of the LHC. First results of these data from the TPC-QC point of view will be shown.