Si disk with tiles

[ShujieL]

Briefly, what does this PR introduce?

Assemble SVT disk with sensor tiles.

What kind of change does this PR introduce?

• Bug fix (issue #__)
• [ x] New feature (issue #__)
• Documentation update
• Other: __

Please check if this PR fulfills the following:

• Tests for the changes have been added
• [x ] Documentation has been added / updated
• [x ] Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

Does this PR change default behavior?

[ShujieL]

The current code will read tile layout from SVT_endcap_tiles.csv, and place them in each disk envelope volume. The disk envelope is a SubtractionSolid = Disk - two beampipe tubes.

It won't run with EICrecon:
[] [acts] [error] D2A_L:InnerS Disc layer has wrong shape - needs to be TGeoTubeSeg!
[] [acts] [error] Error during DD4Hep -> ACTS geometry conversion: Disc layer has wrong shape - needs to be TGeoTubeSeg!

I submitted an ACT issue at acts-project/acts#5320

[github-actions]

Capybara summary for PR 1073

• sim_dis_10x100_minQ2=1000_epic_craterlake
• sim_dis_10x100_minQ2=1_epic_craterlake
• sim_dis_18x275_minQ2=1000_epic_craterlake
• sim_dis_18x275_minQ2=1_epic_craterlake
• sim_dis_5x41_minQ2=1_epic_craterlake
• sim_e_1GeV_20GeV_epic_craterlake
• sim_pi_1GeV_20GeV_epic_craterlake
  ^{_{Last updated 2026-05-07T19:47-04:00 1ef140a}}