Look the centrifuge will never work, it would have too limited range and accuracy. Why not have a focus fusion powered laser? There working on high wattage diode lasers for weapons to take down missiles and artillery fire, a DPF fusion reactor could start up much faster then a turbine so the response time after detecting a missile would be much shorter. Or you could use a DPF (non-fusion) to make a plasma cannon, far fenched I know. Or how about a DPF fusion powered rail gun.
