Comment asml SNF 2009-11-21 21:41:13: Stepper Update 11/21

gsosa at gsosa at
Sat Nov 21 21:41:13 PST 2009

Stepper is back up. Level sensor motor replaced by ASML field service. Performance testing of level sensor very stable and accurate. System has stabilized fully and daily testing looks good. All critical parameters in IQC test in spec. Ran a hotspot test- Wafer looks good( no hotspots, fields look good) . Checked Dose to Clear- Looks good at 51 mj/cm2. System up and ready to use. 

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