*** REVIEW Elog entry #673 Power outage & restart ***

Thursday, July 12, 2018, 10:10: Opened IV4

Thursday, July 12, 2018, 10:20: Attempt auto-ramp cancelled. Max increment values reached. Wait on Vacuum.

Thursday, July 12, 2018, 13:10: Auto-ramping TGHT / TBHT to 500 / 200 A @ 2A per min.

Thursday, July 12, 2018, 13:16: BIAS/EZL/EE @ 30/13/1.5 kV. 

Thursday, July 12, 2018, 13:19: Anode set to 200 V

Thursday, July 12, 2018, 13:23: Gas lines SV1, SV3, SV4 opened without issue.

Friday, July 13, 2018, 07:02: Auto-ramping TGHT / TBHT to 580 / 300 A @ 2A per min.

FM:

Friday, July 13, 2018, 09:26 Ramping up to TBHT=335A to get at least 20 mA on the anode current.

Friday, July 13, 2018, 09:52 Ramp up finished: TBHT=335A, TBHT RB=349.6A, TBHT PS=341A. Anode current=20.757mA@200V. Vaccum ok@8.86e-7Torr

Friday, July 13, 2018, 09:56 Closing Neon valve in order to only deliver Argon.

Friday, July 13, 2018, 13:32   When anode voltage=0V, there are four peaks on the mass scan on masses  23,38,41,83 u. This indicate surface ionized particles. Most likely Sodium (23) and Potassium (38,41) and not sure about 83.

Friday, July 13, 2018, 16:58  Cooling it down for the weekend: TBHT=250A, TGHT=450

Friday, July 13, 2018, 17:01 wow! accidentally, changed to those values immediatly. I hope this does not compromise the cathode - Fernando

Monday, July 16, 2018, 06:57: Odd RGA values. Restarting RGA.

Monday, July 16, 2018, 07:14: RGA only displays Water, Nitrogen, and Oxygen. Investigate.

Monday, July 16, 2018, 09:57 Auto-ramping TGHT / TBHT to 580 / 300 A @ 2A per min from 449 / 209 A.

Monday, July 16, 2018, 10:00: Restarted the RGA with an older file loaded. RGA still only displays lines for Water, Nitrogen, and Oxygen. A table of values is still given for the other masses.

Monday, July 16, 2018, 11:08: TGHT / TBHT to 580 / 320 A. Anode to 200V

Monday, July 16, 2018, 11:19: Neon valve carefully opened. Vacuum stable @ 6.56e-07T. Neon response also showed up on the RGA.

Monday, July 16, 2018, 11:25: TBHT @ 340.0A (332A on PS)

FM

Monday, July 16, 2018, 11:55  TBHT@340A @ 354.7A (RB)@346A PS

Monday, July 16, 2018, 15:02 TBHT@345A @ 359.8A (RB)@351A PS

Monday, July 16, 2018, 15:18 Investigation the possible location of the surface ionized ions by sweeping the voltage in lower values <10V

Monday, July 16, 2018, 15:29 Values swept: 10,8,6,4,2,1 V. the same peak was observed at all cases

Monday, July 16, 2018, 15:52 Closing Neon Valve for efficiency measurement.

Monday, July 16, 2018, 15:58 Steady  ion source current. closing Argon valve.

Monday, July 16, 2018, 17:00 Opening Argon Valve

Monday, July 16, 2018, 17:51 Argon valve closed. Neon Valve open. Measuring Mass=20

Monday, July 16, 2018, 18:13 Manually tapped TBHT down to 325A.

FM

Tuesday, July 17, 2018, 09:53  Ramping up TBHT to 345A

Tuesday, July 17, 2018, 10:13 Ramp up finish. TBHT@345A @ 359.7A (RB)@351A PS.  Vacuum ok @ 7.43e-7 T

Tuesday, July 17, 2018, 10:14 Restarting  quads that were off.

Tuesday, July 17, 2018, 10:18 Tuning

Tuesday, July 17, 2018, 11:01 Measurements will start for mass 20.

Tuesday, July 17, 2018, 11:59 Lunch break

Tuesday, July 17, 2018, 12:41 Coming back. TMSQ2 & TMSQ5 off. Turning them on.

Tuesday, July 17, 2018, 13:54 Retuning emittance scanner to default parameters. Cycle the emittance scanner PS.

Tuesday, July 17, 2018, 14:18 Increasing current limit for anode. From 51.282 mA to  51.400 mA

 Tuesday, July 17, 2018, 14:34 Increasing current limin on anode to 52.00 mA

Tuesday, July 17, 2018, 14:35 Closing Neon Valve

Tuesday, July 17, 2018, 15:02 FC6 stable

Tuesday, July 17, 2018, 15:02 Opening "Argon" bottle

Tuesday, July 17, 2018, 15:21 Fc6 stable. The present current lies between the on/off Neon Valve.

Tuesday, July 17, 2018, 15:30 Opening Neon Valve

Tuesday, July 17, 2018, 15:51 Re-tuning. Taking a mass scan.

Tuesday, July 17, 2018, 15:55 Checking the RGA, I noticed that the maximum reading for Neon was 7.05e-8T, and for Argon, 6.15e-7T

Tuesday, July 17, 2018, 16:45 Increasing Anode current limit to 100mA. Increasing TBHT to 347A, 361.8 RB, 353 PS. Vaccum ok@7.87e-7T

Tuesday, July 17, 2018, 16:54 Finish for today.

FM

Wednesday, July 18, 2018, 09:27  Starting new round of measurements.

Wednesday, July 18, 2018, 09:31 TBHT@350A@364.5A (RB) @ 356 (PS).  Vacuum ok at 6.71e-7T

Wednesday, July 18, 2018, 11:48 Finish mass scan sweeps. Leaving for lunch. Coming back at around 3pm due to science week

Wednesday, July 18, 2018, 15:29 Starting again.

Wednesday, July 18, 2018, 15:30 Mass scan at AB=0V

Wednesday, July 18, 2018, 15:56 Mass scan set to 38.5 (K).

Wednesday, July 18, 2018, 15:56 Measuring emittance.

Wednesday, July 18, 2018, 16:02 Closing Argon bottle.

Wednesday, July 18, 2018, 16:08 Closing Neon bottle.

Wednesday, July 18, 2018, 16:13 Measuring what it looks to be a potassium signal. Let's see if the signal decreases overnight.

Friday, July 20, 2018, 11:48: FC0 put in place & the gas lines closed. - Aaron S.

Friday, July 20, 2018, 11:50  : Auto cooling @ 2A per min.

Monday, July 23, 2018, 07:05: Sources off. Optics checked.

Monday, July 23, 2018, 07:13 : RGA error. Restart for proper shut off. IV4 closed.

Monday, July 23, 2018, 07:14 : Ion gauge, turbos off.