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Si disk with tiles - #1073

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si_disk_hole
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Si disk with tiles #1073
ShujieL wants to merge 44 commits into
mainfrom
si_disk_hole

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@ShujieL

@ShujieL ShujieL commented Apr 7, 2026

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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?

@github-actions github-actions Bot added topic: infrastructure Regarding build system, CI, CD topic: tracking topic: forward Positive-rapidity detectors (hadron-going side) topic: materials labels Apr 7, 2026
@ShujieL

ShujieL commented Apr 7, 2026

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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

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github-actions Bot commented May 7, 2026

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@github-actions github-actions Bot added the topic: documentation Improvements or additions to documentation label Jun 7, 2026
ShujieL added a commit that referenced this pull request Jul 28, 2026
### Briefly, what does this PR introduce? Please link to any relevant
presentations or discussions.
Improve the SVT sensor description. 
Reference: page 14 in Zhenyu's
[presentation](https://indico.bnl.gov/event/33460/#6-svt-rates-next-steps-on-sens)

Change Barrel sensor structure from 1 layer of 40um active silicon to:
46um inactive Si (substrate) + 14um active Si (epitaxial) + 2.5um Cu
(wire bonding)
IB: Cu always face larger R. Also added 12 tiles per RSU structure.
OB: Cu faces outer side of the stave and alternating in Z. 

Disks: change on-hold until the module layout finalized
#1073


### What is the urgency of this PR?
- [ ] High (please describe reason below)
- [x ] Medium
- [ ] Low

### What kind of change does this PR introduce?
- [ ] Bug fix (issue #__)
- [ x] New feature (issue #__)
- [ ] Optimization (issue #__)
- [ ] Updated constants (issue #__)
- [ ] Updated documentation
- [ ] other: __

### Please check if any of the following apply
- [ ] This PR introduces breaking changes. Please describe changes users
need to make below.
- [ ] This PR changes default behavior. Please describe changes below.
- [x ] AI was used in preparing this PR. Please describe usage below.
I used codex to assist coding.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: EIC Container Build Service <gitlab@eicweb.phy.anl.gov>
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topic: documentation Improvements or additions to documentation topic: forward Positive-rapidity detectors (hadron-going side) topic: infrastructure Regarding build system, CI, CD topic: materials topic: tracking

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