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fix: TGeoSurfaceConverter toRadian conversion

Component - PluginsAffects one or more PluginsAffects one or more Plugins

Status: Open (in progress).

acts-project/actsnumber 4428

#4428 In acts-project/acts;

· plariono opened on Jul 14, 2025

Should seed finding tools have a higher-level interface?

Component - CoreAffects the Core moduleAffects the Core module

ImprovementChanges to an existing featureChanges to an existing feature

Needs DecisionNeeds decision or further informationNeeds decision or further information

Stale

Status: Open.

#988 In acts-project/acts;

· stephenswat opened on Sep 13, 2021

Improvement: Estimate track parameters from seed at perigee surface

ImprovementChanges to an existing featureChanges to an existing feature

Stale

Status: Open.

#1036 In acts-project/acts;

· XiaocongAi opened on Oct 10, 2021

Magnetic Field Storage

FeatureDevelopment to integrate a new featureDevelopment to integrate a new feature

ImprovementChanges to an existing featureChanges to an existing feature

Stale

Status: Open.

#1239 In acts-project/acts;

· osbornjd opened on Apr 29, 2022

Documentation: hints for debugging

Component - DocumentationAffects the documentationAffects the documentation

ImprovementChanges to an existing featureChanges to an existing feature

Needs DecisionNeeds decision or further informationNeeds decision or further information

Stale

Status: Open.

#1463 In acts-project/acts;

· timadye opened on Aug 23, 2022

Track nDoF only returns the sum of calibrated size and not the actual DoFs.

ImprovementChanges to an existing featureChanges to an existing feature

Stale

Status: Open.

#2076 In acts-project/acts;

· pbutti opened on May 1, 2023

MultiTrajectory buffer default constructible

Impact - MajorSignificant bug and/or affects a lot of modulesSignificant bug and/or affects a lot of modules

ImprovementChanges to an existing featureChanges to an existing feature

Stale

Status: Open.

#2154 In acts-project/acts;

· tboldagh opened on May 26, 2023

Draft: Start to migrate the R4-MS segment fit

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Event Data Model

Seeding

Track Finding

Status: Draft (not ready).

acts-project/actsnumber 4108

#4108 In acts-project/acts;

· junggjo9 opened on Feb 24, 2025

feat: Geometric digitization with debugged drift, and correct threshold setting

Changes Performance

Component - ExamplesAffects the Examples moduleAffects the Examples module

Component - FatrasAffects the Fatras moduleAffects the Fatras module

Status: Open (in progress).

acts-project/actsnumber 4169

#4169 In acts-project/acts;

· asalzburger opened on Mar 31, 2025

refactor: Some internal GSF refactorings II

Component - CoreAffects the Core moduleAffects the Core module

Track Fitting

Status: Draft (not ready).

acts-project/actsnumber 4194

#4194 In acts-project/acts;

· benjaminhuth opened on Apr 7, 2025

feat: new segmentation class

👷‍♀️ User Action Needed

Changes Performance

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Component - FatrasAffects the Fatras moduleAffects the Fatras module

Status: Open (in progress).

acts-project/actsnumber 4237

#4237 In acts-project/acts;

· asalzburger opened on Apr 28, 2025

refactor: Disjoint set implementation

Clustering

Component - CoreAffects the Core moduleAffects the Core module

Status: Open (in progress).

acts-project/actsnumber 4584

#4584 In acts-project/acts;

· CarloVarni opened on Aug 27, 2025

feature: Add Delegates to select doublets

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Seeding

Track Finding

Status: Draft (not ready).

acts-project/actsnumber 4593

#4593 In acts-project/acts;

· CarloVarni opened on Aug 28, 2025

feat: Score monitors for Score Based Ambiguity solver

Ambiguity Resolution

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Component - PluginsAffects one or more PluginsAffects one or more Plugins

Status: Open (in progress).

acts-project/actsnumber 4609

#4609 In acts-project/acts;

· Ragansu opened on Sep 2, 2025

feat: added new algorithm to clusterize cells in-place

Clustering

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Status: Open (in progress).

acts-project/actsnumber 4735

#4735 In acts-project/acts;

· goetzgaycken opened on Oct 24, 2025

fix: Fix timed clusterization with duplicate cells

Clustering

Component - CoreAffects the Core moduleAffects the Core module

Status: Open (in progress).

acts-project/actsnumber 4762

#4762 In acts-project/acts;

· DJDuque opened on Nov 2, 2025

feat: Allow to dump Tensors in numpy NPY format

Component - PluginsAffects one or more PluginsAffects one or more Plugins

Status: Open (in progress).

acts-project/actsnumber 4783

#4783 In acts-project/acts;

· benjaminhuth opened on Nov 7, 2025

feat: Remove BinUtility from AccumulatedSurfaceMaterial and BinnedSurfaceMaterial

Component - CoreAffects the Core moduleAffects the Core module

Status: Draft (not ready).

acts-project/actsnumber 4902

#4902 In acts-project/acts;

· delitez opened on Dec 11, 2025

feat: Add GSF momentum cut v2

🚧 WIPWork-in-progressWork-in-progress

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Track Fitting

Status: Open (in progress).

acts-project/actsnumber 4903

#4903 In acts-project/acts;

· benjaminhuth opened on Dec 11, 2025

refactor: Improve GNN module map script

Component - ExamplesAffects the Examples moduleAffects the Examples module

Status: Open (in progress).

acts-project/actsnumber 4904

#4904 In acts-project/acts;

· benjaminhuth opened on Dec 11, 2025

Add alignment workflow for the OpenDataDetector

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Status: Open (in progress).

acts-project/actsnumber 4910

#4910 In acts-project/acts;

· Zequn-SUN opened on Dec 15, 2025

Proposal: Propagation with range-based for loop

Component - CoreAffects the Core moduleAffects the Core module

Status: Draft (not ready).

acts-project/actsnumber 4972

#4972 In acts-project/acts;

· andiwand opened on Jan 15, 2026

refactor: simpler type check in Acts::Any

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Status: Draft (not ready).

acts-project/actsnumber 4993

#4993 In acts-project/acts;

· timadye opened on Jan 21, 2026

refactor: Make SurfaceBounds::BoundsType an enum class

Component - CoreAffects the Core moduleAffects the Core module

Component - ExamplesAffects the Examples moduleAffects the Examples module

Component - FatrasAffects the Fatras moduleAffects the Fatras module

Component - PluginsAffects one or more PluginsAffects one or more Plugins

Status: Open (in progress).

acts-project/actsnumber 5048

#5048 In acts-project/acts;

· paulgessinger opened on Feb 4, 2026

fix: guard debug print in CudaTrackBuilding against small bounds vectors

Component - PluginsAffects one or more PluginsAffects one or more Plugins

Status: Open (in progress).

acts-project/actsnumber 5067

#5067 In acts-project/acts;

· murnanedaniel opened on Feb 6, 2026