Update Stgm geometry z-plane locations according to survey data

jdbrice commented 3 months ago

Move sTGC planes to match the z-locations measured as part of the precision position survey. Use the z coord for quadrant A on each plane as the z-location for the entire plane

jdbrice commented 3 months ago

@klendathu2k good questions:

No: the previous z-positions were never used. They were put in because thats where we intended to have the detector but made a change rather late. No productions depend on this, and all simulations are private (no official embedding etc.)
I am not 100% sure what you mean. The z-locations are the installed (ideal) positions shifted by just a few mm since we have the survey data. However, we are using the misalignment tables correctly aren't we (see below)

<Placement block="STGM" in="CAVE" konly="ONLY" x="0" y="5.9" z="338.8385" >
            <Misalign table="Geometry/stgc/stgcOnTpc" row="0"/>
</Placement>

klendathu2k commented 3 months ago

Thanks for the clarification.

@klendathu2k good questions:

* No: the previous z-positions were never used. They were put in because thats where we intended to have the detector but made a change rather late. No productions depend on this, and all simulations are private (no official embedding etc.)

* I am not 100% sure what you mean. The z-locations are the installed (ideal) positions shifted by just a few mm since we have the survey data. However, we are using the misalignment tables correctly aren't we (see below)

<Placement block="STGM" in="CAVE" konly="ONLY" x="0" y="5.9" z="338.8385" >
            <Misalign table="Geometry/stgc/stgcOnTpc" row="0"/>
</Placement>

star-bnl / star-sw

Update Stgm geometry z-plane locations according to survey data #707