As Rana suggested, we present the scattering plot of the AS path mode matching for various variables. The plot is for the AS path, Plan 2 (whose params we summarize at the end of this entry).
In the corner plot, we color-coded each realization according to the mode matching. We use (purple, olive, grey) for (MM>0.99, 0.98<MM<=0.99, MM<=0.98), respectively. From the plot, we can see that it is most sensitive to the RoC of AS1. The plot also shows that we can compensate for some of the MM errors if we adjust the distance between AS1-AS3 (note that AS2 is a flat mirror). The telescope is quite robust to other errors.
The compensation requirement is further shown in the second plot. To correct for the 1% RoC error of AS1, we typically need to adjust AS1-AS3 distance by ~ 1 cm (if we want to go back to MM=1; the window for >0.99 MM spans also about 1 cm). This should be doable because the nominal distance between AS1-AS3 is 115 cm.
The story for plan1 is similar and thus not shown here.
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AS path plan2 nominal params:
label z (m) type parameters
----- ----- ---- ----------
SRMAR 0 flat mirror none:
AS1 0.7192 curved mirror ROC: 2.5000
AS2 1.2597 flat mirror none:
AS3 1.8658 curved mirror ROC: -0.5000
AS4 2.5822 curved mirror ROC: 0.6000
OMCBS1 3.3271 flat mirror none: |