The Goal

• Verify implemented Sti geometry by matching position and material to the original TGeo geometry

The Tools

• Simulated (TGeo) and reconstructed (Sti) tracks can be used to scan detector regions
• Reminder: Sti track is a collection of track nodes. A node is set of track parameters (position at midsection, direction, energy losses...) at Sti volumes traversed by the track



• Instructions available in $CVSROOT/offline/hft/README.md

  $stiscan -h
  Program options:
    -h [ --help ]                                        Print help message
    -f [ --hftree-file ] arg                             Full path to a ROOT file containing a 'hftree' TTree OR a text
                                                         file with a list of such ROOT files
    -p [ --volume-pattern ] [=arg(=process_all_volumes)] A regex pattern Sti/TGeo volume names
    -l [ --volume-pattern-flist ] arg                    Full path to a text file with Sti/TGeo volume names
    -n [ --max-events ] arg (=0)                         Maximum number of events to process
    -s [ --sparsity ] arg (=1)                           Approximate fraction of events to read and process
    -g [ --save-graph ]                                  Use this option to save plots in png format
  

  And similarly for event display

  $tevedisp
  

Results for PXL PSUP

TGeo volumes implemented in Sti

All Sti volumes including IST, beam pipe, ... in the r-z range

Selected PSUP Sti volumes

^.*IDSM_1/DTUH_[12].*$
^.*IDSM_1/PSUP_[12]/PSA[BELK]_.*$
^.*IDSM_1/PSUP_[12]/PSC[LK]_.*$
^.*IDSM_1/PSUP_[12]/PSH[ACEG]_.*$
^.*IDSM_1/PSUP_[12]/PSMD_.*$
^.*IDSM_1/PXMO_1/PXLA_[\d]+/PX.*$
^.*IDSM_1/PXMO_1/PXLA_[\d]+/LADR_\d/PXSI_[\d]+/PLAC.*$
^.*IDSM_1/PSTM_1/APTS_1.*$
^.*IDSM_1/PSTM_1/PITN_1.*$

Summary

• No significant disagreement observed between the expected position of implemented so far Sti volumes (PXL, IST)
• For the final check we need to compare the above stiscan maps to the same obtained from the original TGeo geometries