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ESD SYSTEM OVERVIEW. Transport rod. 1. Cu Sample. Butterfly valve. 2. Bias Sample. Sample Holder plate. Electrometer. RGA. B-A gauge. Pumping group. Filament. Conductance. Gas Injection Line. Filament Power Supply. Full Range Gauge. Bias Filament. ESD SYSTEM OVERVIEW.
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ESD SYSTEM OVERVIEW Transport rod 1 Cu Sample Butterfly valve 2 Bias Sample Sample Holder plate Electrometer RGA B-A gauge Pumping group Filament Conductance Gas Injection Line Filament Power Supply Full Range Gauge Bias Filament
Cu Samples Heat treatment Machining Cleaning ESD main steps:
Bake – out: lower part 9 8 6/11 7 1 2 3 5 10 4
Bake – out: upper part 3B 2B 4B 1B
Circuit 35 KV V 2-3 A A +15 V V A
Calibration: H2 Calibration Factor
Calibration: N2 Calibration Factor
Calibration: N2 2nd set of data Calibration Factor
Desorption Yield • 15 RGA Cycles for background Signal + biassing of the sample • 15 RGA Cycles with the filament switched on • filament + sample degassing
Desorption Yield • switch on the filament • 15 RGA Cycles for background pressure • 15 RGA Cycles with the sample biased