Added protection to Geant4e track propagator

[civanch]

PR description:

Crash in Geant4e backward propagator #31920 stops final alignment of Run-2 based on data.
This PR allows to avoid the crash by applying a momentum limit on propagated tracks 1 GeV/c.

This modification should not affect release validation WFs.

PR validation:

private

if this PR is a backport please specify the original PR and why you need to backport that PR:

it is backport of #32239

[cmsbuild]

A new Pull Request was created by @civanch (Vladimir Ivantchenko) for CMSSW_10_6_X.

It involves the following packages:

TrackPropagation/Geant4e

@cmsbuild, @civanch, @mdhildreth can you please review it and eventually sign? Thanks.
@makortel, @felicepantaleo, @JanFSchulte, @VinInn, @lecriste, @ebrondol, @mtosi this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[civanch]

please test

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_10_6_X_2020-11-22-2300/slc7_amd64_gcc700: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/10947/console Started: 2020/11/23 10:30

[cmsbuild]

+1
Tested at: 1c39ec0
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-50b3a5/10947/summary.html
CMSSW: CMSSW_10_6_X_2020-11-22-2300
SCRAM_ARCH: slc7_amd64_gcc700

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-50b3a5/10947/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 3214712
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3214376
• DQMHistoTests: Total skipped: 334
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 140 log files, 26 edm output root files, 34 DQM output files

[civanch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_10_6_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_11_2_X is complete. This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1