Plans for release 3.2

[madbaron]

This issue tracks the progress towards getting rid of all muon collider specific forks and makes a little roadmap towards future releases

[madbaron]

Overlay:

• Simplify the background particle index mapping key4hep/k4FWCore#429
• Update OverlayTiming to support BIB random mixing key4hep/k4FWCore#413
• Set the CellID encoding of overlaid collections in initialize() key4hep/k4FWCore#423
• fix: protect against out of bounds access key4hep/k4FWCore#425

Calo digitisation:

• Gaudi port of calorimeter digitisers used by ILD and MAIA HEP-FCC/k4RecCalorimeter#281

Fastjet

• Upstream FastJet algorithm from MuonCollider fork key4hep/k4Reco#51

Smearing tracking digitisers:

• Split the propagation-time correction into independent hit-time and time-window flags key4hep/k4Reco#65 by @jburzy

---

Nice to have

Tracking:

• Fix CUDA output tensor for metric learning model key4hep/k4ActsTracking#94

Silicon digi with charge transport:

• Add CMake flags gating Tracking and DCHdigi key4hep/k4RecTracker#97
• Silicon planar realistic digitization for varying sensor thicknesses with multilple scattering and realistic timing smearing implementation MuonCVXDDigitiser#18 (finalisation of Marlin-only precursor)
• TBD

LCContent

• Maia/theta energy PandoraPFAOrg/LCContent#41

k4GaudiPandora

• Enable external clustering algorithm key4hep/k4GaudiPandora#26
• Add theta-energy calibration parameters key4hep/k4GaudiPandora#51

MUSIC geo updates

• Updated MUSIC geometry with instrumented nozzles key4hep/k4geo#658

[madbaron]

Post 3.2

Tracking:

• feat!: extend EDM4hep plugin track conversion for drop-in converter parity acts-project/acts#5676
• Use upstream ACTS converters key4hep/k4ActsTracking#95
• Expand support for 4D tracking key4hep/k4ActsTracking#72

[trholmes]

I made PRs for both PandoraSDK and LCContent:

• PossibleBIB flag for use in muon colliders PandoraPFAOrg/PandoraSDK#37
• Add BIB hit flagging in CaloHitPrep, options to exclude from clustering steps, recovery algorithm to re-associate  PandoraPFAOrg/LCContent#43

And also one to update MAIAConfig to use them:

• Configure BIB flagging and removal from clustering in Pandora MAIAConfig#44

(Only in draft because they're sequential)