For the purpose of LPPX, that is 300J for peak D-D reaction, following the figure 8 of
http://www.plasmafocus.net/IPFS/2010 Papers/2010 Pp2 IJER.doc
the LPPX device should have the following specs:
around 600KJ per shot, or 60KJ-100KJ IF the Goldilocks point is found, with the usual 3MA(0.3-0.5MA) in the pinch, but 9MA(0.9M-1.5MA) discharged by the banks. But the voltage should be increased to 90KV. That would be a great thing since if things scale well to Boron given that a net positive energy could be obtained even with down to 50% of efficiency.
At 50KJ, the best LPPX can achieve right now, would require 150MJ per shot to achieve the objectives…