[Clas12_rich] Radius of curvature of RICH mirror assembly

[Tyler Lemon]

Hello all, 

Using the CMM points for all ten RICH spherical mirrors together, we have run our Python program that uses all the points to calculate the radius of curvature. The program also plots the CMM data and then uses the calculated radius and sphere center point to draw the sphere the mirrors have been cut from. This plot is shown in the attached image. 

For the mirror and back surface of the spherical mirror assembly, the results are: 
Mirror Surface : R = 2701.288 ± 0.279 mm 
Back Surface: R = 2725.982 ± 0.252 mm 

Best regards, 
Tyler 
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