2. In the Cartesian coordinate system, a circle $\Omega$ is drawn with the focus of the parabola $\Gamma: y^{2}=6 x$ as its center, and it is tangent to the directrix of $\Gamma$. Then the area of the circle $\Omega$ is $\qquad$ .
The focus of the parabola $\Gamma$ is $F\left(\frac{3}{2}, 0\right)$, and the equation of the directrix is $x=-\frac{3}{2}$, so the radius of the circle $\Omega$ is 3, and its area is $9 \pi$.