## Location of ion pumps ![[IMG_2953.png|med]] Pumping speed: 60 L/s and 20 L/s ## Connections SI4 = GUN INT SIP VAC READY Current measurement points: - SI9 = Gun - SI10 = Int ## Vacuum levels Ultimate pressure, after bakeout: Gun <= 3 x 10-8 Pa, Int <= 1 x 10-6 Pa ![[Screen Shot 2022-12-30 at 4.00.26 PM.jpg|sm]] SIP HV Ready / Vacuum OK: Gun <= 7 x 10-8 Pa, Int <= 1 x 10-4 Pa ![[Screen Shot 2022-12-30 at 4.00.11 PM.jpg|sm]] Protection (SIP Off): Gun/Int <= 5 x 10-2 Pa Specimen chamber READY light: Gun <= 1 x 10-4 Pa After SIP on for 2 hours: Gun = 4 x 10-8 Pa, Int = 1 x 10-5 Pa Ion pump startup: Gun = 1 x 10-5 Pa READY light on Bakeout Control: 1x10-4 Pa ## Adjustment points TP1, TP2 = Reference voltages VR2 = Meter adjustment, A VR3 = Meter adjustment, Pa VR4 = SIP current changeover VR5 = PROTECTION adjustment VR6 = READY adjustment VR7 = Adjust meter and Pa LED SW1 = Upper: Check HT OFF, Lower: HT ON ### Pressure adjustment SIP CONT PB VR1 - set to 1 x 10-7A for 6400F, 2 x 10-7A for 6300F - VR1 is on the back side of the PCBs ![[IMG_2954.png]]