GEOM240613¶

24 June at 15.00 BST

• Geometry (Ryan Bayes)
• Geometry Verification (Stefania Ricciardi)
• Absorbers (Pavel Snopok)
• CAD Models (Jason Tarrant)
• Detector Groups: Tracker (Chris Heidt?)
• Magnets (Victoria Blackmore, others?)
• AOB

Discussion Items from Previous (i.e. Collaboration) Meetings¶

• What are the priorities for geometry development?
• How do we include the survey information?
• Does the list of members need to be redefined?
• How does (should) the MAUS geometry interact with the g4beamline geometry?

Actions from Previous Meeting¶

• Jason - to refine CAD models in beam acceptance region (He windows, flanges, etc..)
  • STANDS
• Ryan - solve problen in traslation GDML->MAUS Modules
  • DONE further optimization may be needed
• ACTION: Ryan to upload Jason's CAD model to DB to have a first version of STEP IV geometry in a MAUS release.
  Diffuser and cooling channel in two separate CAD files to be merged.
  • STANDS
• ACTION: Stefania to check how much time/particle/s with CAD geometry on RAL Tier2 (Matt reports 2.8 s/particle on his laptop)
  • STANDS Stefania checked that legacy files give 2.7s/muon with STEP IV on TIER2 PPD machines
• ACTION translate TOF (from legacy files updated by Durga), DIFFUSER (CAD files from Jason) geometry to gdml and store to DB (Ryan)
  • STANDS - integrated legacy geometries, but positioning of TRACKERS, DIFFUSER, and ABSORBERS still needed
• ACTION: Integrate Absorber (MAUS Modules) by Pavel in new geometry and store to DB (Ryan)
  • NEW
• ACTION: FIX tracker GDML files - problem in translation to MAUS Modules (Ryan and Chris H.)
  • STANDS
• ACTION: Improving TRACKER Geometry description - fibres outside fiducial region (Heidt)
  • STANDS
• ACTION: GEANT4 warning messages when geometry from CAD import is used (Ryan)
  • DONE - removed from upgrade to g4.9.5
• ACTION: Produce geometry documentation for code developers and pass information to Ryan (Matt)
  • IN PROGRESS
• ACTION: Victoria Blackmore to implement magnet field map interface (Victoria)
  • STANDS

Phone etc¶

Dial-in numbers¶

• UK: 0844 4 73 73 73
• Switzerland: 0848 560 347
• US: 1 415 363 0833 (or 1 646 652 0772)
• Italy: 0821 230 749
• Others listed below
• Skype +49 1803 001 178

PIN: 746868 (PIMUNU)

International Dial in numbers¶

• UK: 0844 4 73 73 73
• Austria 0820 4000 1502
• Belgium 070 35 98 66
• France 0821 230 749
• Germany 01803 001 177
• Ireland 0818 270 007
• Italy 848 391 819
• Netherlands 0870 001 909
• Poland 0801 003 533
• South Africa 087 550 0375
• Spain 902 885 318
• Sweden 0939 2066 300
• Switzerland 0848 560 347
• United States 1 415 363 0833 (or 1 646 652 0772)
• Skype +49 1803 001 178
• World +44 844 580 0555

Chris Rogers Notes¶

• Wrap up from CM
  • Maria Leonova is in charge of G4BL
  • Likely that we will not get running in June 2014, hence magnetic fields should have higher priority than tracker
• Survey and geometry
  • There was some discussion on survey, clarified below
  • Engineering elements integration
    • Jason to get survey points from surveyor
    • Jason to provide CAD drawing for each "engineering" element with survey points marked on it
    • Jason places engineering CAD in overall survey
  • Physics elements integration (e.g. detectors)
    • Jason to get survey points from surveyor
    • Detector group is responsible for providing data on relationship of sensitive detectors to survey points
    • Where detectors are overconstrained, Ryan is to provide code which makes a best fit and throws an exception if the fit is out-of-range
      • Presumably physics group is responsible for providing data on fit range (i.e. SciFi maybe wants ~ 500 microns; TOF maybe wants ~ 1 mm; ckov wants ~ 1 cm... etc)
    • Ryan is to define MiceModule/GDML schema to which detector groups should interface

• G4BL job
  • Two sample use cases were identified
    1. User wants to run G4BL on his laptop (and possibly interface directly to MAUS)
    2. User wants to pull down a pre-existing data set from e.g. config db and interface with MAUS
  • Propose writing a MAUS mapper that takes empty spills and fills with dataset
    • Note #990
  • Then make three different executables, in the spirit of bin/simulate_mice.py
    • An exe that uses MapPyBeamMaker to generate an input from a g4bl "beam" file and fires the rest of the MC
    • An exe that fires g4bl and does nothing
    • An exe that fires g4bl, brings g4bl into the full MC and then goes from there.

Actions¶

• Jason - to refine CAD models in beam acceptance region (He windows, flanges, etc..)
  • DONE
• Ryan - solve problen in traslation GDML->MAUS Modules
  • DONE further optimization may be needed
• ACTION: Ryan to upload Jason's CAD model to DB to have a first version of STEP IV geometry in a MAUS release.
  Diffuser and cooling channel in two separate CAD files to be merged.
  • STANDS
• ACTION: Stefania to check how much time/particle/s with CAD geometry on RAL Tier2 (Matt reports 2.8 s/particle on his laptop)
  • STANDS Stefania checked that legacy files give 2.7s/muon with STEP IV on TIER2 PPD machines
• ACTION translate TOF (from legacy files updated by Durga), DIFFUSER (CAD files from Jason) geometry to gdml and store to DB (Ryan)
  • STANDS - integrated legacy geometries, but positioning of TRACKERS, DIFFUSER, and ABSORBERS still needed
• ACTION: Integrate Absorber (MAUS Modules) by Pavel in new geometry and store to DB (Ryan)
  • NEW
• ACTION: FIX tracker GDML files - problem in translation to MAUS Modules (Ryan and Chris H.)
  • STANDS
• ACTION: Improving TRACKER Geometry description - fibres outside fiducial region (Heidt)
  • STANDS
• ACTION: GEANT4 warning messages when geometry from CAD import is used (Ryan)
  • DONE - removed from upgrade to g4.9.5
• ACTION: Produce geometry documentation for code developers and pass information to Ryan (Matt)
  • REJECTED - Matt has long since left
• ACTION: Victoria Blackmore to implement magnet field map interface (Victoria)
  • STANDS