Ignitor

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What is Ignitor?

Physics

Ignitor is a high-field, high-current, low-β compact Tokamak with such characteristics as to make it able to reach ignition at relatively low temperature (~ 11 keV vs central temperatures ³ 17 keV reached at JET) and high density (~ 10^21 m^-3 in the central column, about one order of magnitude higher that at JET), which represents the fundamental feature that differentiates this machine from all other presently proposed burning plasma experiments.

Ignitor is designed around the criterion that the plasma reactivity (radius / sec cm^2 ) is related to the fourth power of the poloidal magnetic field. This quantity is maximized by combining high magnetic fields and compact dimensions while maximum currents around 10 MA are produced.    






Device

Ignitor

JET

ITER

Major radius (m)

1.32

2.96

6.2

Minor radius (m)

0.47

1.25

2.0

On axis magnetic field (T)

13

3.4

5.3

Ip (MA)

11

5

15

Fusion power (MW)

19.2

16

410

Electron mean density <ne> (10*19 m**-3)

62

8

9.7

 
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