Magnetic mirror fusion research at the Lawrence Livermore Laboratory Page: 6 of 26
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III) The Tandem Mirror
I am sure that you are all familiar with the Tandem Mirror idea,
invented by Dimov here in the Soviet Union and by Fowler and Logan in
the United States. At Livermore we have constructed a major
experimental facility, called TMX, to test the physics principles of
the Tandem Mirror. My first slide shows a photograph of TMX as it
appeared just before the completion of construction. We are now in the
midst of bringing TMX into operation, and hopefully will be obtaining
Meanwhile there have been advances in our und-rstanding of the
thEoretical issues of the Tandem Mirror. One of the important such
issues is that of radial transport. David Baldwin, Ronald Cohen and
Yung Lee have considered these issues, following the work of Ryutov and
Stupakov here in the Soviet Union. They conclude, in agreement with
Ryutov's and Stupakov's results, that both for our TMX and for a
full-scale Tandem Mirror power plant the losses of thermal ions by
radial transport can be reduced below the normal axial losses through
the mirror plugs by using care in scaling. The next slide illustrates
the regions where these scaling considerations enter. The simplest
scaling has to do with the radius of the plasma itself, as in the
tokamak. But the longitudinal scale length of the transition regions
also must be considered. These are those field regions between the
axially symmetric central solenoidal field and the fan-shaped field
regions in the end cells. The length of this transition region and
details of its shape are the important scaling parameters which
influence radial transport. Our designs seem to be satisfactory from
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Post, R.F. Magnetic mirror fusion research at the Lawrence Livermore Laboratory, article, February 9, 1979; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1111120/m1/6/: accessed April 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.