OLD CLIC Detector Calorimeter Calibration

This TWiki aims to document the calibration and optimization studies for the CLIC detector calorimeters, specifically the HCal, performed in 2014-2015. In order to allow direct comparison with the ILD-based studies at Cambridge, a modified version of the ILD_o1_v06 detector in realized in Mokka was used.

Model under investigation

To realize the new Clic detector geometry we use modified version the ILD_01_v06 Mokka driver, adapted for our requirements. In this way, there we ensure compatibility with the reconstruction framework and maintain the ability to cross-check with the studies performed at Cambridge.

/Mokka/init/detectorModel ILD_o1_v06
/Mokka/init/EditGeometry/rmSubDetector SServices00 #Resizing doesn't work otherwise
/Mokka/init/globalModelParameter Hcal_radiator_material TungstenDens24 #Need this material in the barrel
/Mokka/init/globalModelParameter Field_nominal_value 4.5
/Mokka/init/globalModelParameter TPC_outer_radius 1500
/Mokka/init/globalModelParameter Hcal_nlayers 75
/Mokka/init/globalModelParameter Hcal_endcap_nlayers 60
/Mokka/init/globalModelParameter Hcal_radiator_thickness 10
/Mokka/init/globalModelParameter Coil_Yoke_lateral_clearance 518 #Needed to move Yoke plug to accommodate layers
 

MIP Calibration

A helpful talk by A. Lucaci-Timoce: https://indico.cern.ch/event/295004/contribution/0/material/0/0.pdf In the above talk it is mentioned that simply making the Energy per hit plot (and determining the calibration from the max) is not right, but instead one should perform a scan of the calibration factor so as to obtain a maximum at E=1 MIP. We use the "wrong" approach for now.