Author/Authors :
Lyon، نويسنده , , J.F. and Nelson، نويسنده , , B.E. and Benson، نويسنده , , R.D. and Berry، نويسنده , , L.A. and Cole، نويسنده , , M.J. and Fogarty، نويسنده , , P.J. and Freudenberg، نويسنده , , K.D. and Goranson، نويسنده , , P.L. and Harris، نويسنده , , J.H. and Heitzenroeder، نويسنده , , P. and Lumsdaine، نويسنده , , A.D. and Madhukar، نويسنده , , M.A. and Neilson، نويسنده , , G.H. and Shannon، نويسنده , , T.E. and Spong، نويسنده , , D.A.، نويسنده ,
Abstract :
Engineering innovation is required to reduce cost and risk in fabrication for the Quasi-Poloidal Stellarator being developed to test key physics issues at very low plasma aspect ratio. Complex, highly accurate, stainless steel modular coil winding forms are cast and machined; conductor is wound directly onto the winding forms; a vacuum-tight cover is welded over each coil pack; the coils are vacuum pressure impregnated; the completed coils are installed in an external vacuum vessel. An internally cooled, compacted cable conductor that can be wound into complex 3-D shapes was developed. The largest and most complex of the winding forms has been cast using a patternless process (machined sand molds) and a high-temperature pour. The resulting casting required <1/10 the major weld repairs of similar sand castings using conventional patterns. As a result, QPS differs significantly in design and construction from other toroidal devices.
Keywords :
Magnet R& , d , Stellarator , magnet
