Engineering features of ISX Page: 4 of 12
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by 122 inches in span. The center section will have
a 23-in. diameter cross section, and the 'eturn legs
will be 23 in. square. Back bias windings are
included on the center leg only. The core will have
a total weight of approximately 60,000 pounds.
Plasma-Vacuum Tank
A single region vacuum plasma chamber is being designed
for ISX. The vessel will be composed of alternating
bellowed and fixed sections. The basic geometry of
this component is shown in Fig. 8. The initial liner
will be constructed from austentic stainless steel.
The thin wall bellows (.018 in. thick) eliminate the
need for an insulating break; while the fixed sections
are structurally rigid enough to allow diagnostic
access limited only by the coil geometry.
The liner will be an all welded vessel, completely
assembled before installation into ISX. Penetrations
will utilize high temperature metallic seals. Once
installed, the liner will be baked to 400 C by
induced currents. The design vacuum of 3 x 10-9
torr will be achieved by use of turbomolecular pumps.
The system shown fulfills the requirement of a 25 cm
radius plasma ta a 90 cm major radius, while allowing
for a possible expansion to a 28 cm radius plasma at
at 93 cm radius.
Conclusions
Detail design of the various ISX components are in
varying degrees of completion. However, overall
efforts to date have uncovered no obstructions to
achieving the originally proposed highly flexible
facility for the study of impurity effects on plasma.
The overall plan calls for this facility to be used
to study wall and limiter materials and geometries,
wall cleaning methods, and for test and development
on new diagnostics.
References
1. R. 0. Hussung, D. C. Lousteau, N. Johnson,
ISX Toroidal Field Coil Design and Analysis,
Sixth Symposium on Engineering Problems of
Fusion Research, November 1975.-4-
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Lousteau, D. C.; Jernigan, T. C.; Schaffer, M. J. & Hussung, R. O. Engineering features of ISX, article, January 1, 1975; United States. (https://digital.library.unt.edu/ark:/67531/metadc868393/m1/4/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.