Experimental Simulation of the Behaviour of Diagnostic First Mirrors Fabricated of Different Metals for ITER Conditions

Table 3: Sputtering of mirror samples in the TS.

Mirror Material	Average Roughness Ra, nm		Sputtering Depth, µm	Sputtering Depth in Relation to the Sputtering Depth of the Mo Sample
Mirror Material	Before	After	Sputtering Depth, µm	Measured Data Y/Y(Mo)	Computed Results Y/Y(Mo)*
Mo	0.5	0.7	0.12	1.0	1.0
SS	1.6	5.7	0.22	1.8	6.9
Cu	7.0	47	2.68	22.3	15.5

*Computed using the data from report [⁵²] with due regard for the experimental conditions during the whole experimental running period, and also, with the use of the sputtering data from [⁵].