Timeline for How large can you make a tokamak?

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May 25 '12 at 16:48 comment added Frédéric Grosshans @Joel: Actually, it seems (strangely) to be the opposite : it seems that building a small Tokamak is difficult, because the magnetic field would be too big ! Which explain why we have difficulties to make reduced models in order to validate the concept.
May 25 '12 at 16:23 comment added Joel Anyway, so the answer to my question about scale-up is that "it may very well be possible to make huge tokamaks, but we just don't know. in any case, a simple linear scale-up isn't possible due to the large magnetic fields required". That answers my question, thanks!
May 25 '12 at 16:18 comment added Joel That's a very interesting observation, about non-linearity, which maybe also partly explains why it is taking so long time get fusion power viable as a commercial power source.
May 25 '12 at 14:37 history edited Frédéric Grosshans CC BY-SA 3.0
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May 25 '12 at 14:21 history answered Frédéric Grosshans CC BY-SA 3.0