GEOM120514¶

• Geometry Software Development (Ryan Bayes)
• Geometry Validation and Task Force Coordination (Stefania Ricciardi)
• CAD Models (Jason Tarrant)
• Detector Groups: Tracker (Chris Heidt), EMR (Ruslan), KL (Mariyan Bogomilov), Cherenkov (Lucien Cremaldi),Absorbers (Pavel Snopok)
• Magnetic Fields (Victoria Blackmore)
• AOB

Agenda¶

• Updates on software development
• Validation http://micewww.pp.rl.ac.uk/projects/maus/wiki/Geometry-validation-criteria
• Geometry release plans
• AOB

Discussion Items¶

- Diffuser settings: got MAUS modules of diffuser settings from Victoria, translating files to GDML so that they can be uploaded to CDB, but they do not contain blades. Blades CAD design given to Jason. Need specifications of thickness of blades and positions to simulate.
Jason in contact with Oxford, will be in the position to provide thickness and positions to Ryan, who will make the gdml.
- PRY to be incorporated in TOF1, TOF2 shielding for STEP IV
- EMR group committed the geometry description to MAUS, not committed yet to DB. Hold off until there is a MAUS release with EMR digitisation working.
- few extra peaks left in the energy-loss profile (vs z): peak at 19745 introduced by FastRad; small peak around 16500mm to be investigated by Jason
- validation: absorber can be changed by hand, LiH energy loss compatible with expected and similar to TOF1 (polystyrene and LiH have very similar density, also thickness is similar: LiH65mm)
Request to produce plots off axis, to make further checks (specifically quadrupoles fields, but also energy loss to see whether there are other strange FastRad features).
Visualisation can also help check material budget. Problem of overlapping volumes, for example where there are screws (no holes for the screws, because we are working with simplified models). Jason to produce models without screws and Ryan provide a set of visualisations.
- LH2 bug found by Ryan in MAUS 0.8.3 , will be fixed in next MAUS release
- We need a plan for addressing the time issues with MC (geometry taking 30min to upload, about 20s/event) - Abandon FastRad modelling and go back to legacy file? GDML directly instead of MAUS Modules? (not an easy change)

Standing Actions from previous meetings¶

• ACTION: Improving TRACKER Geometry description - fibres outside fiducial region (Heidt)
  • STANDS
• ACTION: Victoria Blackmore to implement magnet field map interface (Victoria)
  • STANDS
• ACTION: Ruslan to provide relation between survey points and centre (?) first EMR plane
  • STANDS
• ACTION: Ruslan/Jordan to release EMR geometry for MAUS release
  • DONE
• ACTION: RYAN to provide interface to fit for best detector positions, given survey points, to place all volumes.
  • DONE - Needs detector responsible sign off on relation between survey nests and detector
• ACTION: Ryan to make available "debug geometry" with on-axis elements only, for fast simulation
  • DONE
• ACTION: Ryan to udpate MAUS USER GUIDE
  • IN PROGRESS
• ACTION: Stefania to validate geometries ID 22(debug) and 23(STEPIV) and 27 (STEPI)
  • In PROGRESS
• ACTION: Jason to provide CAD dwawings for STEP V and VI and information on position and thickness of diffuser blades for STEP IV
  • STANDS RF cavity models exist
• ACTION: PRY to be incorporated in TOF1, TOF2 shielding for STEP IV (JASON)
  • NEW
• ACTION: Ryan to investigate extra peaks in energy loss in Stefania's validation plots
  • DONE extra-peak at 19,745 is a reference object for FASTRAD (coincide with MICE Center of STEP VI)
• ACTION: Jason to investigate small peak around 16500 in geometry ID23
  • NEW

Present¶

Ryan, John N, Durga, Chris R, Jason, Stefania

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