Configure GSCDepth option for JetCalibrator

[mamerl]

Adding an additional option in JetCalibrator to allow the GSCDepth specified in a calibration config file to be overwritten with a user-specified value via m_calibGSCDepth. Implemented to only override GSCDepth when m_calibGSCDepth is not empty and GSC exists as a substring in the calibration sequence string.

[mdhank]

Hi @mamerl ,

For my knowledge, what does the GSCDepth option do? And what sort of value(s) are allowed?

Thanks,
Michael

[mamerl]

Hi @mdhank,

GSCDepth controls which of the GSC steps get applied e.g. normally the ordering is chargedFraction->Tile0->EM3->nTrk->trackWIDTH->PunchThrough but for HLT jets we want to only do up to trackWIDTH since the information for the PunchThrough correction is not available for HLT jets.

The allowed values of GSCDepth are strings that can be any of "chargedFraction", "Tile0", "EM3", "nTrk", "trackWIDTH", "PunchThrough", or "Full" (same as "PunchThrough").

In Athena there is a check for the GSCDepth parameter to ensure it is valid at https://gitlab.cern.ch/atlas/athena/-/blob/main/Reconstruction/Jet/JetCalibTools/Root/GlobalSequentialCorrection.cxx?ref_type=heads#L109. For now we just implemented the flag to pass the value to JetCalibrationTool and let the Athena tools handle the checks. If needed we can add some error checking though. What do you think is best?

Thanks,
Max

[mdhank]

Thanks for the information! I think it's fine as is.