Pixel Geometry Fixes

[schneiml]

These two commits should fix the Phase1 Pixel geometry issues reported in the Offline week diskussion.

The pixbar volumes touched here were not modified for a long time, and it is not clear why the subtraction was used there in the first place. It seems safe to remove it, but this should be checked again.

We attempted to compensate the material budget changes by adjusting the material densities accordingly, even though the change is probably within the tolerance of these numbers.

[cmsbuild]

A new Pull Request was created by @schneiml (Marcel Schneider) for CMSSW_8_1_X.

It involves the following packages:

Geometry/TrackerCommonData

@civanch, @Dr15Jones, @ianna, @mdhildreth, @cmsbuild, @davidlange6 can you please review it and eventually sign? Thanks.
@makortel, @ghellwig, @venturia, @VinInn, @ghugo83 this is something you requested to watch as well.
@slava77, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[ianna]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/16260/console

[cmsbuild]

+1
Tested at: e93a055
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16519/16260/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16519/16260/summary.html

[ianna]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_1_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @smuzaffar

[ianna]

@civanch and @davidlange6 - comparing with previous display the overlaps in Pixel are fixed.
with this PR:


before:

[davidlange6]

+1