Updating material model for fast tracking

In fast tracking reconstruction, the junk of material between the inner and outer pixel system is modelled as a cylinder with some material which scales along z. The following plot shows the comparison between the geant4 material in the interesting region and the material modelling for ATLAS-P2-ITK-22-00-02 (black) and the updated one for ATLAS-P2-RUN4-03-00-00 (red).

assigned to @ncalace

FYI: @pagessin @lgagnon @tstreble

This merge request affects 1 package:

• InnerDetector/InDetRecEvent/SiSPSeededTrackFinderData

This merge request affects 2 files:

• InnerDetector/InDetRecEvent/SiSPSeededTrackFinderData/src/SiTrajectoryElement_xk.cxx
• InnerDetector/InDetRecEvent/SiSPSeededTrackFinderData/src/SiTrajectory_xk.cxx

Adding @goetz ,@gavrilen ,@sroe ,@jsandesa as watchers

added InnerDetector main review-pending-level-1 labels

CI Result SUCCESS (hash e20818c6)

	Athena
externals
cmake
make
tests

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For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 74968]

Changes look fine and the CI is good. Approving. Clara (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 4c7d829b