Revision as of 18:25, 18 November 2016

November 17, 2016 Drift Chamber meeting

Connection

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 == Tracking ==
-- Mike reported on his plan for the FDC alignment (see the link above).
+- Mike reported on his plan for the FDC alignment (see the link above). On a scale of +/- 250 microns one certainly sees in the residuals some non-uniform features over the area of the chambers. The residuals are from a run with magnetic field and tracking through both CDC and FDC without excluding the corresponding chamber from the track.
 -  Mike made a presentation (linked) on his studies of the CDC/FDC transition region. He used straight tracks through the FDC and looked at the residuals w.r.t. the CDC wires. This is the procedure used by Lubomir to find the CDC offsets w.r.t. FDC except that Mike used the standard Simon's tracking. Mike showed there's ~20% more tracks in the 10-30 deg region after applying the offsets. These offsets will be included for the next analysis run.