I have trying to make a dome shape with a circular base but curved on top. Like a disk just not flat on both sides and not spherical. Example, the base would be about 20 inches in diameter, but the vertical distance from the base to the highest point of the disk would only be about one inch. I would like to make this design several ways with different curvatures but am unsure on where to start. I guess this would be similar to slicing off part of a sphere but I am unsure how to do this as I am new to solid works

Additionally, is there a specific name of this shape?

Similar to the top part of the attached photo

Thank you!