Postby **TallDave** » Sun Jun 21, 2009 5:11 pm

Yes, that longer sweep might be what Dr. Nebel was referring to with his "greater dynamic range" comment (I've been trying to puzzle out exactly what that meant).

My understanding is that the basic physics should still be fast enough that a WB-8 pulse will tell us enough about the scaling that we could conceivably build WB-100 with some reasonable expectation it would work as hoped. The magnets are almost an order of magnitude stronger in WB-8 versus WB-7 (.8T versus .1T). The plasma would be 8^4= 4096 times more powerful and produce something resembling 8W (all else being equal to WB-6). How it behaves is the big question I suppose, esp regarding confinement.

(In fact, come to think of it, the proportion of magnet strength between WB-7 and WB-8 might actually be bigger than the difference between WB-8 and WB-100. At similar proportions, we'd be looking at 6.4T magnets in WB-100, and I think the EMC2 guys have been thinking around 5T.)

I did my little BOE calc of 8W for WB-8, but I didn't make any adjustments for size because I don't know the new dimensions. If it's also twice as large, we might be looking at something around 64W.

Bussard did make at least one continuous machine in that 30cm size, iirc.