Parabolic surface with rectangular profile

Hi, I’m new in this forum.

I would like to ask you how to implement a parabolic surface with rectangular profile (for a mirror).
I already did something like that for a spherical surface, by setting the starting and delta theta and phi.
So I was wondering if the same thing could be done for the paraboloid.
I read about the class G4Paraboloid, but it only provides the whole volume (I couldn’t find a way to set something like an inner radius to use only the internal surface).

Do you have any suggestion on how to solve this problem and get the desired surface?
Thank you in advance.

Best regards,
Nicola

Hi, you can use Boolean operations (union, subtraction and intersection) on solids to construct a model with required shape.

1 Like

Thanks, it worked perfectly.
I obtained the desired surface as subtraction between a box a paraboloid.
Best regards,
Nicola.

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