You people should look up accelerator driven nuclear reactors, this is what a DPF could do, if DPF do not manage to become has energy positive as theory suggest then as a neutron generator for a sub-critical reactor they could make nuclear fission cheaper, safer and cleaner, sure it won’t be a great as a true fusion economy but it may be a good backup plan if DPF fails to meet it mark, even if DPF reaches practical net positive energy with aneutriatic fusion, neutratic fusion with DPF would still be greatly usefull in a accelerator driven sub-critical reactor as a means of destroying nuclear waste.
https://focusfusion.org/index.php/forums/viewthread/141/