Mehulkumar Shiroya authored Sep 21, 2021 and Florian Uhlig committed Nov 11, 2021

v21a has stations with extended pitch, uses the old beam pipe, repositions the FEB boxes, and changes the material(Airex) for foam in sts wall.
v21b has stations with extended pitch, repositioned central ladders according to 40 mm diameter beam pipe and new material(Airex) for foam in STS wall. New nomenclature has been applied to halfladders from up(u) to top(t) and down(b) to bottom(b).
v21c has stations with extended pitch, repositioned central ladders according to 55 mm diameter beam pipe and new matrial(Airex) for foam in STS wall foam
v21d has stations with extended pitch, repositioned central ladders due to provision for a 40 mm diameter beam pipe. The back side wall has a honeycomb structure Airex matrial used
v21e has the centre of the magnet along the beam line as the global origin point. Additionally the local sts origin (x=0, y= 0, z= 0) is taken as the centre of the last sts station along the nominal beam axis. New Nomenclature has been applied to halfladders from up(u) to top(t) and down(d) to bottom(b).

The central ladders are moved upward (y-direction) due to the conical beam pipe with 40 mm diameter upstream side and 100 mm diameter in downstream side.

STS geometries without beampipe flange. Old material(Silicon) and thickness of micro-cable.