[HGCAL] Using single particle in closeby configurations

[apsallid]

PR description:

We are reducing the number of particles produced with the closeby particle gun to one, decreasing unnecessary complexity in the regular validation campaigns.

PR validation:

We checked that the validation can be performed without any issue.

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

Not a backport.

@rovere @felicepantaleo @ebrondol @lecriste

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-32263/20040

• This PR adds an extra 28KB to repository

[cmsbuild]

A new Pull Request was created by @apsallid for master.

It involves the following packages:

Configuration/Generator

@SiewYan, @mkirsano, @cmsbuild, @GurpreetSinghChahal, @agrohsje, @alberto-sanchez can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @fabiocos 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

[agrohsje]

+1

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_11_2_X_2020-11-24-2300/slc7_amd64_gcc820: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/11022/console Started: 2020/11/25 10:06

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs after it passes the integration tests. 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)

[cmsbuild]

+1
Tested at: bc18939
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4d24dc/11022/summary.html
CMSSW: CMSSW_11_2_X_2020-11-24-2300
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4d24dc/11022/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 2274 differences found in the comparisons
• DQMHistoTests: Total files compared: 37
• DQMHistoTests: Total histograms compared: 2963516
• DQMHistoTests: Total failures: 54292
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2909202
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 36 files compared)
• Checked 158 log files, 34 edm output root files, 37 DQM output files

[qliphy]

+1