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March 21, 2010

IEC Fusion Reactor Design Comparisons

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Comparing the Inertial Electrostatic simulation paper from one of the IEC 2009 presentations with the new EMC2 Fusion website picture. (H/T Talk Polywell for pointing out the simulation paper again with a steady state reactor design proposal.)

Joel Rogers gave a talk about a IEC fusion simulation.

Bussard's landmark 2006 publication showed that the power balance (Q) increases with the size of the Polywell machine as the 5th power of the magnet radius. Break-even radius is, by definition, the radius (R) of the smallest machine that produces more power than it consumes. Practical power machines must be larger than this size, but not much larger because of the steep rise of Q with R. Particle-in-cell simulation was used to find the maximum Q for each R by searching the steady-state parameter space defined at startup by knob values. Applying the 5th power scaling law to this optimum Q predicts that the break-even radius for DD fueled Polywell will be 1.3m. This is much smaller than the radius of the planned ITER design, giving Polywell an advantage over the competing magnetic confinement power generation.

(EMC2 Fusion website) Confinement Behavior With Detailed Diagnostics WB-7.1 2010

The EMC2 WB-7.1 has more flanges.




The simulation calculated electron losses and a 1.3 meter breakeven size. The simulation pictures also show where magnets, flanges, ion guns, electron guns and the shape of magnetic fields.




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