DD4HEP Training/Hackthon

12 May 2025, 09:00 → 15 May 2025, 18:00 Europe/Zurich

Gloria Corti (CERN), Menglin Xu (CERN)

As in the previous hackathons, we will start with tutorials and courses. The main focus of this hackathon is the LHCb geometry with DD4Hep format, particularly for Upgrade 2 studies. It will also provide a refresher & training for new people working on Run3 DD4Hep geometry.

Core software and Simulation experts will be available also to discuss, advise, and hack topics of your choice as related to the use of DD4Hep geometry and conditions.

Monday 12 May

09:00 → 12:30 Training

09:00 Introduction, Scope and practical matters

Speakers: Gloria Corti (CERN), Menglin Xu (CERN)

Introduction.pdf

09:20 Introduce a new Detector Geometry: design, implementation and pitfalls

e.g. sensitive ID, how to define module
Include here or in previous talk general information on DD4Hep, why LHCb extensions and DeElement

this adds 15 more minutes in either talk

Speaker: Ben Couturier (CERN)

DD4hepTutorial-DetectorGeometryDesign-1.pdf

10:15 Visualization and debugging of geometry

Tools from DD4hep and Detector project.
The pyg4ometry package.

Speaker: Thomas Latham (University of Warwick (GB))

Debugging-and-Visualisation-Tools.pdf

10:50 coffee break

11:20 Hands-on session

12:30 → 14:00 Lunch

14:00 → 17:30 Training

14:00 Introduce associated Detector Conditions: design, implementation and pitfalls

e.g. optional conditions

Speaker: Sebastien Ponce (CERN)

NewFrameworkAndConditions.pdf

14:40 Hands-on session

instructions.pdf

15:40 coffee break

16:10 Implementation of LHCb geometry in Detector

What is in Detector for the LHCb geometry

DeLHCb for loading general conditions like magnetic field

Detector project structure

Versioning

Documentation

Speaker: Menglin Xu (CERN)

Implementation

video2678577586.mp4

16:35 Conditions, CondDB, branches and (virtual) tags

Speaker: Marco Clemencic (CERN)

Conditions__CondDB__branches_and__virtual__tags.pdf

18:00 → 20:00 Social event: Welcome drink

Tuesday 13 May

09:00 → 10:40 DD4Hep in Simulation

09:00 Using the geometry and Introducing new DD4hep-based detectors in Gauss

Speaker: Menglin Xu (CERN)

Gauss

09:20 Visualization and debugging of detector with Gauss

e.g. material scans, Geant4 visualizaiton, Phoenix with MC

Speaker: Michał Mazurek (National Centre for Nuclear Research (PL))

GMT20250513-072711_Recording_1920x1080.mp4

Visualization and debugging of detector with Gauss (1).pdf

09:50 Hands-on session

10:40 → 11:00 coffee break

11:00 → 12:30 Round Table: Run3

Conveners: Erika De Lucia (INFN e Laboratori Nazionali di Frascati (IT)), Menglin Xu (CERN)

• sensitive detector ID
• VolumeID or ChannelID?
• DetDesc vs DD4hep comparison: 
  • Residual differences in geometry description and conditions
  • Comparison at both the Simulation and Digitization levels (LHCbPR dashboards)
• Monitoring tools in LHCbPR and SimDQ have enough to spot possible differences or issues in production?
• Data vs MC
• any other issue reported by sub-detector

12:30 → 14:00 lunch

14:00 → 15:00 Training & Hackathon: Free topic

15:00 → 17:00 DD4Hep in Digitization

video1926374372.mp4

15:00 Introducing new digitization for DD4hep-based detectors in Boole

e.g. should you use the sensitive ID?

Speaker: Hangyi Wu (Syracuse University (US))

Digitization

15:40 Hands-on session

Wednesday 14 May

09:30 → 12:30 Round Table: Upgrade II

Conveners: Erika De Lucia (INFN e Laboratori Nazionali di Frascati (IT)), Menglin Xu (CERN)

audio1673413514.m4a

12:30 → 14:00 Lunch

14:00 → 16:00 Training & Hackathon: Free topics

16:00 → 16:20 Coffe or Tea

16:20 → 18:00 Training & Hackathon: Free topics

Thursday 15 May

09:00 → 12:30 Training & Hackathon: Free topic

12:30 → 14:00 Lunch

14:00 → 17:30 Training & Hackathon: Free topic