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LAr Calorimeter Signal FeedThroughs detailed geometry implemented in rel 21

Andrei Sukharev requested to merge asoukhar/athena:rel21-LArCalorimeter-SignalFT-DeadMaterial-fixes into 21.0

LAr Calorimeter Signal FeedThroughs detailed geometry implemented (ATLASSIM-4437). This is backport from release 22.

LAr Calo dead material description was simplified for the Barrel and EC FeedThroughs and Front-End Crates.

The introduced changes are:

  1. Detailed description for each Signal FT, including corresponding materials.
  2. Extra structures for Endcap FTs (cables, chimneys).
  3. Endcap FEC size and position fixes.

To activate, one have to set

from LArGeoAlgsNV.LArGeoAlgsNVConf import LArDetectorToolNV
LArDetectorToolNV.ActivateFeedThrougs=True

Otherwise, the earlier behavior remains.

The patch contains slight change of CALO and Muon envelope volumes (a 12 mm Z plane shift at the back of the calorimeter), and this may affect other systems. Overlap check with ROOT shows no clashes.

Edited by Andrei Sukharev

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