Electric field enhancement at the sepcific point, Comsol 4.2a, RF module

Dear All,

I have question. I have one dipole (gold), and I done some calculations for scattered filed,
in 400nm-1000nm spectrum etc.

Now I want to check is there some electric field enhancement
at some specific point in space between parts of the dipole.

My question is, shuld I define that point (in which I want to see enhancement) before simulation,
or is there possible to define that point after simulation and check the enhancement?

If there is possible, please be kind and send some suggestions. ;-)

Thank you very much in advanced.