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Difference between a tokamak and a spherical tokamak

  1. Apr 16, 2017 #1
    The title question is quite self-explanatory. Despite the fact that Spherical tokamaks are more spherical in shape, what else differentiates the ST from the conventional tokamak. I've heard that ST's use reverse field configurations from a website but I am skeptical about this since the rest suggest otherwise. Do ST' use reverse field configurations? And any other differences?

  2. jcsd
  3. Apr 17, 2017 #2
    The only difference is “aspect ratio”, the ratio of major radius to minor radio of the tokamak plasma. As the aspect ratio decreases, the plasma shape becomes less doughnut-like and more spherical-like, especially when the plasma has vertical elongation. When the aspect ratio is about 2.0 or below, the tokamak is arbitrarily called a “spherical torus” or "spherical tokamak."

    There is NO reverse field or any other non-tokamak feature.
  4. Apr 17, 2017 #3
    Oh. I think the reverse field thing is a part of the spheromak not the spherical tokamak . Got it. Thanks
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