Anode / Cathode BIAS PS polarity reversed by John Chow. PS: Negative

Monday, October 15, 2018, 14:12: Power/sources on

Monday, October 15, 2018, 14:17: RGA on.

Monday, October 15, 2018, 14:22: Gas-lines opened. Vacuum ok @ 4.38e-07T

Monday, October 15, 2018, 14:29: Auto-ramping TGHT / TBHT to 580 / 300 A @ 2A per min.

Monday, October 15, 2018, 14:30: Optics on

Monday, October 15, 2018, 14:33: BIAS / EZL / EE @ 30 / 13 / 1.5 kV.

Monday, October 15, 2018, 14:35: Anode @ 200 V.

Monday, October 15, 2018, 14:36: IV4 Open.

Tuesday, October 16, 2018, 06:33: Auto-ramping TBHT to 320 A @ 2A per min. 

Tuesday, October 16, 2018, 07:15: Coil @ 50 A. 

Tuesday, October 16, 2018, 14:40: FC6 Auto range & Polarity set. Mass scans work now.

FM

Wednesday, October 17, 2018, 10:02 : Auto-ramping TBHT to 330 A @ 2A per min. 

Wednesday, October 17, 2018, 13:21: Auto-ramping TBHT to 340 A @ 2A per min.

Wednesday, October 17, 2018, 13:45: Increasing TBHT voltage from 3.001 to 3.5 to  avoid voltage limitation when increasing the current

 Wednesday, October 17, 2018, 13:48: Auto-ramping TBHT to 345 A @ 2A per min.

Wednesday, October 17, 2018, 13:54: FC0 start decreasing once the ramp up finished. Vacuum ok @ 5.17e-7T.

Wednesday, October 17, 2018, 17:16: FC0 stable. Probably outgassing. Vacuum ok @ 5.37e-T

Wednesday, October 17, 2018, 17:16: Auto-ramping TBHT to 350 A @ 2A per min.

Wednesday, October 17, 2018, 17:30: Ramping finished. FC0 decreasing again. Vacuum ok @5.57e-7T

Wednesday, October 17, 2018, 17:51: Potassium signal seems to be decreasing and now the Argon is slightly higher than Potassium.

Wednesday, October 17, 2018, 17:51: Mass optimized for 40Ar, which is shown in the mass scan as ~39.52. Dipole current=102.2736 A

Wednesday, October 17, 2018, 17:52: Starting steerers an einzel lense tuning to increase FC6 signal. Will continue tomorrow

FM

Thursday, October 18, 2018, 08:03: FC0 signal is stable now. Auto-ramping TBHT to 355 A @ 2A per min.

Thursday, October 18, 2018, 08:08 Ramping finished. Vacuum ok @5.26e-7T. Anode current=65 mA.

Thursday, October 18, 2018, 09:55: FC0 looks stable now. Manually tapping 2 A to have TBHT=357A.

 Thursday, October 18, 2018, 11:40: Vaccum ok @ 4.56e-7T

Thursday, October 18, 2018, 16:25: Vacuum ok @ 5.28e-7T

Thursday, October 18, 2018, 16:26: Manually tapping 2 A to have TBHT=359A.

Thursday, October 18, 2018, 17:29: Steerers, einzel lens and dipole tune to increase signal on FC6. Argon current=4 nA. Total source current=54 nA.

Thursday, October 18, 2018, 17:37: Coil to 50A.

Thursday, October 18, 2018, 17:47: Closing Neon valve.

Thursday, October 18, 2018, 17:57: Closing Argon valve.

Thursday, October 18, 2018, 19:51: Assuming 720 nA entering the source (from Brad). Efficiency  measurement = 0.44%

Thursday, October 18, 2018, 19:52: Opening valves.

Thursday, October 18, 2018, 19:54: Vaccum ok @ 5.46e-7T

 FM

Friday, October 19, 2018, 08:27: Manually tapping 1 A to have TBHT=360.

Friday, October 19, 2018, 08:39: FC6 is stable. Closing Neon Valve.

Friday, October 19, 2018, 08:44: FC6 is stable. Closing Argon Valve.

 Friday, October 19, 2018, 09:13: TBHT@360A, AV=150V. Efficiency measurement = 0.41%

Friday, October 19, 2018, 09:16: Opening the valves.

Friday, October 19, 2018, 09:40: FC6 stable. Carefully increasing AV (anode voltage) to 200V keeping an eye on the AC (anode current).