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[12_4_X] Fixed MC truth data on particle transfer from tracker to calorimeter #38717
[12_4_X] Fixed MC truth data on particle transfer from tracker to calorimeter #38717
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A new Pull Request was created by @civanch (Vladimir Ivantchenko) for CMSSW_12_4_X. It involves the following packages:
@cmsbuild, @civanch, @mdhildreth can you please review it and eventually sign? Thanks. cms-bot commands are listed here |
type bug |
please test |
+1 Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-19fac8/26192/summary.html Comparison SummarySummary:
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+1 |
This pull request is fully signed and it will be integrated in one of the next CMSSW_12_4_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_12_5_X is complete. This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @qliphy, @rappoccio (and backports should be raised in the release meeting by the corresponding L2) |
bqckport of #38716 |
+1 |
PR description:
This PR is a backport of #38706 and #38716 . It restore computation of transient MC truth data on tracks transfer from tracker to calorimeters. This feature was lost after migration to DD4hep. This information exist only during simulation of an event and is not persistent but is used in special tests, for example with some SimWatchers. The fix is needed in the MC production release.
No effect on MC production is expected, no change of hits/digi.
PR validation:
private