TGHT, TBHT, ANODE and COIL power tested (some amps/volts)
Monday, August 17, 2015, 10:43: BIAS/EL/EE to 15/7.5/1.5 kV
Monday, August 17, 2015, 10:45 : COIL 20A, ANODE 200V
Keiko fixed the auto-ramping program and access rights to it.
Monday, August 17, 2015, 13:06: Auto-ramping at 2/1 A/min. Good/bad vacuum at 6E-6 and 8E-6 T
Monday, August 17, 2015, 13:24 : ANODE current limit set incorrectly. Corrected and 200V (9 mA)
Monday, August 17, 2015, 15:28: COIL to 50 A
Monday, August 17, 2015, 15:43: Reduced ANODE to 100 V
Monday, August 17, 2015, 16:56 : Increased EL to 8.3 kV to increase FC current.
Monday, August 17, 2015, 17:04 : FC0 current at 1.5E-8 A
Beam ionized and accelerated on the new TM2 source tray
Monday, August 17, 2015, 17:12 : TGHT / TBHT at 500 / 250 A. Will leave over night to outgas. ISAC ops are monitoring the source.
Tuesday, August 18, 2015, 08:07: Everything stable overnight. Continue ramping heaters.
Tuesday, August 18, 2015, 08:48: TBHT voltage limited by EPICS (hardcoded) at 273 A.
TGHT/TBHT at 600 / 273 A
Tuesday, August 18, 2015, 09:52: Adjusted COIL current down to 0 and back up. Response seen on FC0.
Tuesday, August 18, 2015, 22:29 : Starting cool down.
Wednesday, August 19, 2015, 08:26: Source and HV off. EE configured to conditioning mode. RGA off.
Wednesday, August 19, 2015, 08:42: BIAS/EL at 15 / 7.5 kV. PNG1 at 3.5E-6 T, IG1 at 3.9E-7 T
Wednesday, August 19, 2015, 08:53: BIAS/EL 20 / 10 kV. 2 sparks.
Wednesday, August 19, 2015, 09:54: BIAS/EL 30 / 15 kV. Some sparking around 28 kV required BIAS voltage to be reduced momentarily.
Wednesday, August 19, 2015, 10:04: Sparking at 30 kV. Reduced BIAS to 13 kV to get spar rate to less than 10/min
Wednesday, August 19, 2015, 10:19 : BIAS current limiting. Switch off BIAS and EL
Wednesday, August 19, 2015, 12:04: Water off for purging and leak test.
Wednesday, August 19, 2015, 12:52: Vacuum response observed while David was working on purging the water lines. This turned out to be when the valve to the leak detector was opened. |