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Archived Messages for CLAS_GSIM@cebaf.gov: DC_GEOM.map for Run 1

DC_GEOM.map for Run 1

Robert Feuerbach (feuerbac@ernest.phys.cmu.edu)
Wed, 22 Apr 1998 18:14:18 -0400 (EDT)

Hi GSIM and general offline folks,

I've just put in values for x-shifts for DC R2 and R3 into the
DC_GEOM.map, run 1 to undo some recent changes to the nominal DC shape so
that recsis has R2 and R3 wires in the same place as gsim. The are mm size
movements in x, due to different trumpet lengths than the original design
value.

DC R2 and R3 match between recsis and gsim to within +- 10 microns. R1
in recsis matches gsim in wire position to about 200 microns.

I'll work on getting the geometry for recsis and gsim the same (using
offsets) after finally finding a decent answer for the DC alignment.

Take care,
Rob