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Add Lowq2 track association #1775

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Add Lowq2 track association #1775

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simonge
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@simonge simonge commented Mar 31, 2025

Briefly, what does this PR introduce?

Reorganization of the FarDetectorLinearTracking to allow Track-Particle associations to be produced for the Low-Q2 Tagger.

Not quite the whole picture but this PR should stand alone before the associations are propagated to the Post-ML tracks and injected into the common tracking flow.

There are lots of alternative approaches to this, the current one here felt like the least ugly (assuming it works).

What kind of change does this PR introduce?

Please check if this PR fulfills the following:

  • Tests for the changes have been added
  • Documentation has been added / updated
  • Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

No

Does this PR change default behavior?

Changes the output of FarDetectorLinearTracking to an edm4eic::Track rather than edm4eic::TrackSegment. At a later date both might be produced as the TrackSegment contains TrackPoints which are equivalent to a missing 3D measurement.

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veprbl commented Mar 31, 2025

@simonge simonge mentioned this pull request Apr 1, 2025
7 tasks
@github-actions github-actions bot added the topic: far-backward Reconstruction related to far backward detectors label Apr 9, 2025
@simonge simonge requested a review from veprbl April 11, 2025 18:08
@veprbl veprbl force-pushed the Fix-lowq2-track-association branch from 8d615ab to fe949e1 Compare April 15, 2025 05:09
@github-actions github-actions bot added topic: calorimetry relates to calorimetry topic: tracking Relates to tracking reconstruction topic: PID Relates to PID reconstruction topic: far-forward Far forward reconstruction topic: infrastructure labels Apr 15, 2025
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Don't see any problems with this, although, I admit, I understand only so much of this. Would be nice to have a unit test for this to check some basic cases. Other than that, there are few comments and questions from me.

@@ -17,18 +17,16 @@
namespace eicrecon {

using FarDetectorLinearProjectionAlgorithm =
algorithms::Algorithm<algorithms::Input<edm4eic::TrackSegmentCollection>,
algorithms::Algorithm<algorithms::Input<edm4eic::TrackCollection>,
algorithms::Output<edm4eic::TrackParametersCollection>>;
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(Just a thought)
For Acts tracking, we actually output projections as TrackSegments.

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