SLPX-Superconducting Long-Pulse Tokamak Experiment

D. L. Jassby, J. File, G. Bronner, J. R. Clarke, H. G. Johnson, G. D. Martin, J. G. Murray, M. Okabayashi, W. G. Price, P. Rogoff, C. E. Singer, L. D. Stewart, J. J. Bundy, S. L. Gralnick, T. Luzzi, J. D. Marino, D. Sedgeley, P. Eckels, P. Gaberson, J. MurphyR. D. Hay, K. E. Lind, C. Paulson, G. M. Fuller, A. L. Gaines

Research output: Contribution to journalArticlepeer-review


The principal objectives of the SLPX (Superconduc-ting Long-Pulse Experiment) are: (1) to demonstrate quasi-steady operation of 5 MA hydrogen and deuterium tokamak plasmas at high temperature and high thermal wall loading, and (2) to develop reliable operation of prototypical tokamak reactor magnetics systems featuring a toroidal assembly of high-field niobium-tin coils, and a system of pulsed niobium-titanium superconducting poloidal-field coils. This paper describes the status of the engineering design features of the SLPX, with emphasis on the magnetics systems. The toroidal-field coils have an aperture of 3.1 m x 4.8 m, and can operate with a maximum field at the conductor of 12 T. The superconducting poloidal field magnetics system consists of a pulsed NbTi central solenoid, and a set of d.c. NbTi equilibrium-field coils. The entire machine is enclosed in an outer vacuum container equipped with re-entrant ports that provide ambient access to the room-temperature plasma vessel.

Original languageEnglish (US)
Pages (from-to)847-850
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number1
StatePublished - 1979
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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