Studies of tritiated co-deposited layers in TFTR

Plasma facing components in TFTR contain an important record of plasma wall interactions in reactor grade DT plasmas. Tiles, flakes, wall coupons, a s tainless steel shutter and dust samples have been retrieved from the TFTR v essel for analysis. Selected samples have been baked to release tritium and assay the tritium content, The in-vessel tritium inventory is estimated to be 0.56 g and is consistent with the in-vessel tritium inventory derived f rom the difference between tritium fueling and tritium exhaust. The distrib ution of tritium on the limiter and vessel wall showed complex patterns of co-deposition, Relatively high concentrations of tritium were found at the top and bottom of the bumper limiter, as predicted by earlier BBQ modeling. (C) 2001 Elsevier Science B.V. All rights reserved.