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# Minutes for the Taskforce Meeting on CERN Testbeam Data (Dec. 8, 2022, 14:00~15:40) * Indico page: https://indico.ihep.ac.cn/event/18496/ * Minutes: created by Yong; modified by ... * Participants (12): Baohua, Dejing(?), Francois, Hengyu, Jiaxuan, Manqi, Siyuan, Tatsuki, Xin, Yong, Yukun, Yuzhi * General news * Consensus on the strategies of TB data preparations * Two ways working in parallel * Short term: Binary -> ROOT for quick data checks and calibrations * Same treatment procedures for MC samples * Mid/long term: Binary (-> ROOT) -> LCIO for more decent data treatments in the CEPC software framework * Data after calibrations will be converted into LCIO (calibrations of pedestals, temperatures, MIP, HG/LG, etc.) * Status/progress * Yuzhi&Hengyu: event display using Druid with a few positron (20GeV) events in ECAL * Color coding (rainbow scale) implemented for different hit energy depositions (MIP scale) * Noticeable contaminations of hadronic showers in ECAL * Yukun: prepared a draft list of the ROOT data format (TTree) after calibrations * Siyuan * Event display of selected events to check the event synchronisation of in ECAL and HCAL * Observed that triggerID is not the same for ECAL and HCAL events after synchronisation: with a triggerID offset of 1 * Not conclusive on the issue whether this triggerID offset is constant for all events -> needs further investigations (2 aspects: electronics and TB data) * Further discussions on the triggerID offset issue * Muon data sets can be used to check whether the triggerID offset distributions * (1) Predefine a (relatively large) triggerID window * (2) Events are synchronised if the triggerIDs for ECAL and HCAL are in the window. * (3) Plot the difference of trigger ID for ECAL and HCAL at event level -> Check the distributions at the run level * Francois: made some progress on the direct raw->LCIO conversion (parsing the binary data and store them accordingly in classes in LCIO) * Action items * Yuzhi, Hengyu and Siyuan * Use the same data sets (small) to check the consistency of Druid and TB event display * Jiaxuan and Yukun * Prepare small data sets (mu,e+,pi+) for the above consistency check * Yukun * Will send around a list of the ROOT data format * TriggerID issue on ECAL/HCAL event synchronisation * Francois and Tatsuki will have offline discussions and check the muon data * Electronics experts will investigate and try to find possible reasons * Francois * Will continue to work on the direct binary->LCIO conversion