Posted: Tue Apr 26, 2011 10:24 am
The question is: How wide will your beam be? [and if greater than 5 barns in cross-section, then how will you ensure nucleii in the edge react with the others?]
a discussion forum for Polywell fusion
https://talk-polywell.org/bb/
Diameter of the beam will be highly dependent on electron current.chrismb wrote:The question is: How wide will your beam be? [and if greater than 5 barns in cross-section, then how will you ensure nucleii in the edge react with the others?]
For plant's net power of 1,000 MW we need two ions beams with currents 250 A each and electrons current of about 60 A.chrismb wrote:So what electron current are you expecting to need?
Well, at least you've confirmed that you are not being serious about this. For ions at a few 10's of keV, you need of the order of megaAmps to keep them confined, and that is whilst permitting beam width to be several 10's of cm. If you want narrower beams, you need higher currents still.Joseph Chikva wrote:For plant's net power of 1,000 MW we need two ions beams with currents 250 A each and electrons current of about 60 A.chrismb wrote:So what electron current are you expecting to need?
In heavy ion fusion tens thousand amperes are used. In impuls.chrismb wrote:Well, at least you've confirmed that you are not being serious about this. For ions at a few 10's of keV, you need of the order of megaAmps to keep them confined, and that is whilst permitting beam width to be several 10's of cm. If you want narrower beams, you need higher currents still.Joseph Chikva wrote:For plant's net power of 1,000 MW we need two ions beams with currents 250 A each and electrons current of about 60 A.chrismb wrote:So what electron current are you expecting to need?
250A! What mag field do you seriously think you'll get from that!?