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Integration of monopoles in O2 framework - #15602

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jackal1-66 wants to merge 8 commits into
AliceO2Group:devfrom
jackal1-66:monopoles
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jackal1-66 wants to merge 8 commits into
AliceO2Group:devfrom
jackal1-66:monopoles

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@jackal1-66

@jackal1-66 jackal1-66 commented Jul 15, 2026

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This PR implements the monopoles integration in AliceO2

jackal1-66 added a commit to jackal1-66/AliceO2 that referenced this pull request Jul 15, 2026
Please consider the following formatting changes to AliceO2Group#15602
jackal1-66 added a commit to jackal1-66/AliceO2 that referenced this pull request Jul 21, 2026
Please consider the following formatting changes to AliceO2Group#15602
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This PR did not have any update in the last 30 days. Is it still needed? Unless further action in will be closed in 5 days.

@github-actions github-actions Bot added the stale label Aug 21, 2026
@github-actions github-actions Bot closed this Aug 26, 2026
@jackal1-66 jackal1-66 reopened this Aug 27, 2026
@github-actions github-actions Bot removed the stale label Aug 27, 2026
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jackal1-66 marked this pull request as ready for review September 11, 2026 09:15
@wiechula

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Dear @jackal1-66 , I just merged another PR that touches the TPC Detector code. I seems that this brought in a conflict. Please have a look.

@jackal1-66

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Ciao @wiechula, could you please check that my solution works well for you? I gave priority to your condition over isMonopole.

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Error while checking build/O2/fullCI_slc9 for 39381ca at 2026-09-21 13:44:

No log files found

Full log here.

Previous version was configuring O2MonopolePhysics globally which replaced
the chord finder on the run G4FieldManager and also called G4Transportation::EnableMa
gneticMoment(true), which are botbh global switched. Since NystromRK4 is incompatible
 with the monopole physics, the G4ClassicalRK4 was used, which I think is wrong, as I
 wanted to keep the original stepper the VMC macro asks for. Now the monopoles chord
finder is built and not installed.
In addition some minor things that were raised by Sandro's review and found while rechecking the code:
- Now SetMaxstep(1.e10) is not called for monopoles, as that limit belongs to the dri
ft volume rather than the track
- TPC and ITS ProcessHits look up the monopole PDG code for neutral tracks only (reduction in calls)
- Throw fatal in case Monopole Physics is requested but not installed properly
The commit, together with the rest has been validated by running with Schwinger pair
monopoles + various gD options.
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Error while checking build/O2/fullCI_slc9 for 1d62ef1 at 2026-09-22 16:59:

No log files found

Full log here.

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3 participants