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CEA-Saclay Activities - TESLA Technology Collaboration - Desy

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CARE-SRF : Surface Preparation - EP<br />

Rotating sample holder<br />

@ 16 V :<br />

• t = 470mn, d A-C<br />

=22 mm,<br />

Rem.Thick. = 160 µm<br />

• t = 470mn, d A-C<br />

= 92mm,<br />

Rem.Thick. = 80 µm<br />

EP bath<br />

• t = 300mn, d A-C<br />

=2.2mm,<br />

Rem.Thick. = 157 µm<br />

• Standard sample holder<br />

Rotating sample holder:<br />

(reproduces cavity<br />

geometry, exposure to air,<br />

rotation….)<br />

• Rotating anode: surface state differ considerably from what usually found<br />

on samples => better tool to estimate optimal conditions on cavities<br />

• Several bath compositions will be tested with design of experiment<br />

techniques (statistical tool => modelisation of the behavior of any bath<br />

composition)<br />

<strong>TESLA</strong> collaboration meeting -LAL Orsay<br />

07/09/2004 5

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