Electrical connection to an insulator to carry current

[d.sonali20]

I am working on a project that uses a Faraday cup. Its consists of a metallic cylinder(pipe like) with an electrode at the bottom.The ions enter the cylinder and hit the electrode.The resulting current is carried away from the electrode to an amplifier by a wire .The electrode that i am using is an insulator. So how do i provide the electrical connection.the electrode being an insulator,will it give any charge for the wire to carry

 

[sophiecentaur]

How can an electrode not conduct? Electrons need to get to its surface don't they? (By definition)