TRIGA type research reactors, probably the most popular model, are specifically designed to be "pulse reactors" that can produce rapid power spikes of 20,000+MW

TRIGA type research reactors, probably the most popular model, are specifically designed to be "pulse reactors" that can produce rapid power spikes of 20,000+MW. I don't see how you could argue that the main purpose isn't simulating nuclear detonations. Same with Sandia Z Pinch machine and NIF. It's all dual purpose tech to simulate bombs since actual testing isn't done anymore. You won't find anyone that says it outright but the government interest in pulsed power is awful suspect.