Does a 20kV MOSFET exist?

I am trying to find some sort of electronic switch that can be used to discharge a 20kV 1nF capacitor. I was planning on using a MOSFET, but shortly after doing some research I found that I couldn't find one.

I was wondering if anyone would know of a MOSFET or any alternative electronic switches, such as relay switches or IGBTs, that can handle 20kV of voltage?