I would like to mesh the region below in order to use it for a calculation by means of NDSolve. Could anyone help me to discretize this region for NDSolve using. Thank you very much.

```
Needs["NDSolve`FEM`"];

Rwg=7.0; RLiner=8.0; RRib=8.5; RExt=9.0; Theta1=0.0227; Theta2=0.00916; 

Ω=ImplicitRegion[
    !(x^2 + y^2>RLiner^2 && x^2 + y^2< RRib^2 && 0<y<x*Tan[Theta2])&&
 (y>=0 && x^2 + y^2>=Rwg^2 && x^2 + y^2<=RExt^2 && y<=x Tan[Theta1]),{x, y}];

Show[ RegionPlot[Ω], ImageSize -> 300]

ToElementMesh[Ω,MaxCellMeasure -> 0.0001]["Wireframe"]

```