Agenda

Attendance

Paul S., David, Kate, Buddhika, Vassu, Andrew, Juliette, Zuhal

(Kate) working on getting W&M undergrad (Evan Jackson) set up to continue the studies of sieve collimator hole images at GEMs on magnetic field imperfections.
(Juliette) we can look at separate BFIL (magnetic field strength) values for upstream and downstream toroids, since the field maps are separate, and GEANT 4 will happily superimpose them. Buddhika is learning to get GEANT 4 up and running; he will soon be able to generate simulation files. Juliette plans on generating individual field maps for the 5 "coils" (meaning, 5 sections of magnet along the beam direction), so we can study effect of de-tuning field in one or more of them. May be able to compensate (for example) for an azimuthally symmetric radial missplacment of one coil set by adjusting current in a different coil set, so as to ensure that tracks arrive at the nominal locations on the main detectors. David asks that we also generate field maps with individual sector missalignments that are larger than the ones studied to date, so that we can interpolate rather than extrapolate when fitting changes in hole images.
(Vassu)

See email invitation, or contact David Armstrong or Kate Evans for Zoom link