Author/Authors :
Nygren، نويسنده , , R.E. and McKee، نويسنده , , G.R. and Fordham، نويسنده , , J.A. and Lewis، نويسنده , , S.A. and Kugel، نويسنده , , H. and Ellis، نويسنده , , R.A. and Viola، نويسنده , , M.E. and O’Dell، نويسنده , , J.S.، نويسنده ,
Abstract :
Each of the four toroidal panels of the liquid lithium divertor being installed in NSTX for operation in the 2010 campaign is a conical section inclined at 22° like the previous graphite divertor tiles. Each panel is a copper plate clad with stainless steel and a surface layer of porous plasma sprayed molybdenum (Mo) that will host lithium deposited from an evaporator. This paper describes the processes in fabrication; these include cutting to rough shape, die pressing into conical sections, machining to near final shape with holes for electrical heaters, thermocouples and a groove for a cooling tube, brazing of the 0.25-mm cladding and vacuum plasma spraying of the Mo coating.
