GEOM090315¶

Geometry Task Force Coordination (Stefania Ricciardi)
Geometry Software Development (Ryan Bayes)
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¶

Ryan, Dimitri, Stefania

ACTION: Improving TRACKER Geometry description - fibres outside fiducial region (Heidt)
- STANDS (Ryan to ask Chris whether this is still to be considered)
ACTION: Victoria Blackmore to implement magnet field map interface (Victoria)
- STANDS (D2 map already exists, not SS)
ACTION: Francois to provide relation between survey points and centre (?) first EMR plane
- STANDS
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 (TOF ok, but position of TOF2 nests may change)
ACTION: Ryan to udpate MAUS USER GUIDE
- IN PROGRESS
ACTION: Ryan to investigate how to reduce geometry load-time
- DONE - GDML parser brought to work
ACTION: PRY plates to be incorporated in TOF1, TOF2 shielding for STEP IV (JASON). This replaces the TOF cages which should not be used.
- STANDS (TOF cages already removed. Some shielding already present between TOF1 and magnet. Additional shielding may be needed for TOF1. Will see next CAD iterations)

Geometry with GDML parser works (3min upload time) except for a configuration variable that does not behave as expected (to upload only detectors, if one wants to run a even simpler geometry). Problem with sensitive detectors solved.
Problem of placing magnetic field wrt to magnet material (solved at iteration 0): problem of bridging the gap between the magnetic field maps coordinate system and hall coordinate system; problem of setting it up in an automatic way to avoid human intervention.
Problem of beamline settings: default D2 field current does not match those in quadrupole. Introduce a facility that sets currents according to a tag (a predefined run-setting in CDB).
New survey coordinates: rotation + translation in z. It should not affect software once incorporated into the CAD. Need to check with Jason. There will be different TOF1 surveys, before and after PRY installation.
TOF1 geometry. Changes in the orientation of the planes. First upstream plane is now horizontal. Fine in software (never changed!)

PIN: 746868 (PIMUNU)

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