Modeling electron heat transport during magnetic field buildup in SSPX Page: 3 of 17
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Modeling Electron Heat Transport During
Magnetic Field Buildup in SSPX
D. D. Hua,a E. B. Hooperb and T. K. Fowler'
aDepartment of Nuclear Engineering
University of California
Berkeley, CA 94720
bLawrence Livermore National Laboratory
University of California
Livermore, CA 94551
A model for spheromak magnetic field buildup and electron thermal transport,
including a thermal diffusivity associated with magnetic turbulence during helicity
injection , is applied to a SSPX equilibrium, with a maximum final magnetic field
of 1.3 T. Magnetic field-buildup times of 1.0 x 10-3, 5.0 x 104 and 1.0 x 10-4 s
were used in the model to examine their effects on electron thermal transport. It
is found that at transport run time of 4 x 10-3 s, the fastest buildup-time results
in the highest final temperature profile, with a core temperature of 0.93 keV while
requiring the lowest input energy at 140 KJ. The results show that within the model
the most rapid buildup rate generates the highest electron temperature at the fastest
rate and at the lowest consumption of energy. However, the peak power requirements
are large (> 600 MW for the fastest buildup case examined), suggesting that effects
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Hua, D.D.; Hooper, E.B. & Fowler, T.K. Modeling electron heat transport during magnetic field buildup in SSPX, report, October 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc691671/m1/3/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.