GEOM020215¶

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, Durga, Stefania

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: 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 udpate MAUS USER GUIDE
- IN PROGRESS
ACTION: Ryan to investigate how to reduce geometry load-time
- IN PROGRESS - Provisional success for geometries without overlapping volumes.
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 (additional shielding may be needed for TOF1)

Ryan wrote translation algorithm to avoid manipulation. This is a script which takes Jason files, divided by material definition, and groups them in position-derived modules. Code in MAUS that translates Jason files to files to be used by GDML parser. Ready
Problem of placing magnetic field wrt to magnet material: 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 alignment and geometry: shall we have a new geometry for each alignment configuration? Probably not. Problem to be discussed at the CM. Two options: system that allows to manipulate files on the fly on the command line; geometry in CDB.
Priority: get new geometry with GDML parser implementation to work. Still problem with sensitive detectors (Mice modules used for those)
New survey coordinates: rotation + translation in z. It should not affect software once incorporated into the CAD. Need to check with Jason.
TOF1 geometry. Changes in the orientation of the places. First upstream plane is now horizontal. Still to be implemented software.

PIN: 746868 (PIMUNU)

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