The military! All the funding you’d ever need could come from the army, navy, and yes, even the air force. Why would they want something like this? I know they are looking at anything to eliminate or reduce their dependence on fossil fuels. Nuclear fission reactors are fine for boats, but a nobody wants a nuclear fission reactor on an air plane last time I checked. But a large air plane that could stay in the air for days or even week has huge advantages. The army could definitely use a power source that could be compact enough for a small base and have little or no safety issues. If it gets blown up, there would be negligible radioactive contamination to handle. Getting fuel to a remote base is expensive and potentially dangerous. For every gram of boron 11 + p fuel you get about 19 megawatt hours of energy.. they could power big things for a very long time with just a few kilos of fuel. The navy could use this tech as a replacement for nuclear fission. Its ideal for submarines (no heat signature from the reactor). No chance of going kablooie and no radioactivity means it can be used on smaller vessels (tight restrictions are not as necessary). It even has space applications (needs no large radiator, a huge plus).
The only thing this has going against it is that it is simply too good to be true at this time and the military has been burned by schemes that promised results like this (the navy actually had a perpetual motion machine program).
The us military has almost the largest budget of any organization anywhere on Earth. I don’t see why they couldn’t put down a 2 million down on a proof of concept and continue to fund it if it works.
I realize that the aim of the scientists working on this idea is for peace you must realize it will be used by the military if it is as good as you say it can be.
Fission reactors for energy production first came to be for mostly military projects from the start IIRC then it went into the civilian realm very soon after.
I was thinking DARPA would be a good place to start.
Focus Fusion Society