Analysis & visualisation tools

Pantelis Kontaxakis (University of Geneva), Birgit Stapf, Juraj Smieško (CERN)

CERN

7 October 2026

Advent of Analyzers

9–11 December 2026, 09:00–17:00

CERN, 42/R-032 — in person, room for ∼15 people

Improve the analyzers used by the whole FCC community
- refactor the C++ function you always found clunky
- add the one you wish existed
- finally write the missing unit tests or documentation
No deep framework knowledge required — just curiosity and some C++ or Python experience
Bring your laptop and your ideas — registration on Indico will open soon

Data preservation — talk by U. Schwickerath at today's FCC Full Sim meeting
- Covers also analysis preservation: what was done, how, with which datasets, and the analysis code
- ICFA recommendations: Best Practices for Data Preservation and Open Science in HEP (web application)
FCC Physics Events website — outage reported yesterday
- Cause: database password mangled during the database upgrade
- Should be working again now — please report any issues

No new release since the last meeting — latest is still v0.13.1 from 8 September
Merged: #561 — handling of condor logs and output on the pre-edm4hep1 branch
In progress
- DIRAC grid submission — #538, together with consolidating input resolution between the runner and grid submission (#557)
- Integrated CMS Combine backend — #520
- Selections — index-based selection (#502), new pre-/final-selection method and do_plots features (#513)
- Jet truth labelling — ghost association, hadron/parton ghost labels, truth jets (#549–#554)
  - Discussed in the next slot today

Phoenix@FCC — releases v0.3.6 and v0.3.7 (1–2 October)
- Updated detector geometries, including FCC-hh, with transparency and linked opaque volumes
- ILD logo added
root2gltf — releases v2.1.0 and v2.2.0
- Random colour for volumes without a defined one
- Optionally increased transparency of the outer volumes
- Flags renamed to match the dd4hep2root ones
FCCVisualization — interactive visualisations with multiple backends
- Presented by Amir H. Ebrahimnejad later today