Aaron Schmidt wrote:

The ISAC was left with the turbo pumps and water supplies running. Just the power supplies off. Monday, March, 23, 2020. Check daily Thursday, March 26, 2020, 13:25: Vacuum ok at 3.2e-07T. All status ok. Friday, March 27, 2020, 09:00: Checked via epics. There appears to have been a trip.  Vacuum at 7.953T . The trip looks to have occurred around midnight. (See attached*) Friday, March 27, 2020, 11:15: MCR shut down supply / return on DI water supply to be on the safe side. Friday, March 27, 2020, 11:20: Monitor. Control room has my cell number now as well as it's on my TRIUMF profile. Beam line side ok. Monday, March 30, 2020, 06:26: Vacuum @ 8.583T. Tuesday, March 31, 2020, 10:03: Vacuum @ 8.016T.  Wednesday, April 01, 2020, 11:51: Vacuum @ 8.205T. Thursday, April 02, 2020, 11:41: Vacuum @ 8.709T. Friday, April 03, 2020, 05:05: Vacuum @ 9.213T.  Tuesday, April 07, 2020, 10:46: Vacuum @ 11.922T.

Tuesday, April 07, 2020, 10:53:

Tried pumping down chamber with roughing pump. Looks like there is water in the system. Will leave it as is for now.

Tuesday, April 28, 2020, 12:30

Removed SiC#40 target and pumped down with HS lines blanked off. Used recycled SST gaskets.

Tuesday, April 28, 2020, 13:00

Still problem with water in the system. CG1 at about 25 Torr. Purging all water lines and pumping down again.

Determined on Friday April 16th that the water leak was on the coil negative circuit. This was determined by circulating water through once circuit at the time. Only HF and GE tested (not Extraction Electrode).

Friday, December 04, 2020, 13:34

Vacuum is at 3.6e-6 Torr and possibly still dropping. Starting HV tests with just a tube and wire hanging down from the feedthrough. Turned on power supply and started raising voltage.

Friday, December 04, 2020, 15:13

Achieved 75 kV. No sparking at any point along the way. Vacuum is around 3.1e-6 Torr. Will hold for about 30 minutes to confirm.

Friday, December 04, 2020, 16:07

Held 75 kV for ~35 minutes. Ramped down and shut off power supply. Vacuum is at 2.7e-6 Torr.

Monday, December 14, 2020, 11:30

Switched off all breakers in HV cage. Started HV testing of TM3 prototype.

Monday, December 14, 2020, 12:58

Possible first spark at 18 kV.

Monday, December 14, 2020, 14:51

Nothing interesting since then, up to 33.5 kV now.

Monday, December 14, 2020, 14:56

Possible spark at 34.5 kV. 35.5 kV, 36.5, 37.5, 38.5, 39, 39.5, 40.5, 41, 41.5, 42.5, 43 (bigger current spike), 43.5, 44 (vacuum jumped for a bit), 44.5, 45 (voltage drop and vacuum jump).

Monday, December 14, 2020, 16:14

Holding at 45 kV for 10 minutes. Each of these previous "sparks" occurred just after raising voltage. Will decrease step size to 250 V from 500 V if these get more significant.

Monday, December 14, 2020, 16:19

45.5 kV. Went to observe possible spark while Carla raised voltage. Saw small flash towards bottom left, unsure of depth, but perhaps farther to the back.

46 kV. Sparking maybe in the same location. Carla reduced voltage.

Monday, December 14, 2020, 16:47

47 kV. Sort of unstable every time voltage is raised. Decreasing step size to 250 V.

Monday, December 14, 2020, 17:11

48.75 kV. Decreased current limit to 0.005 mA a couple steps previously to see effects. Seems like the current bumps at the start of each voltage raise have dropped from 0.010 mA to 0.005 mA. This seems to indicate that the current limiting is working and is controlled by EPICS. Pierre thinks the prototype must be pretty clean since the testing has been pretty smooth up to this point.

Monday, December 14, 2020, 17:29

49.75 kV. Heard what sounded like an air piston in the background and also saw a large drop in voltage. Voltage dropped in a similar manner a couple minutes after but without the sound. No effect on the vacuum though.

Monday, December 14, 2020, 17:45

50 kV. Held for 8 minutes and then a sound again occurred that sounded like some sort of pneumatic system; along with this a total drop in voltage, but no change in vacuum Otherwise completely stable. Will hold for another 10 minutes or so and ramp down.

Monday, December 14, 2020, 17:53

50 kV. Stable. Starting ramp down.

Monday, December 14, 2020, 18:11

Voltage ramped down. Vacuum has been at around 1.13e-6 Torr throughout this. Shut off power supply. Dumped data to TM3HVtest-20201214-Prototype_2, and earlier I dumped to TM3HVtest-20201214-Prototype. GoPro is taped to vacuum box window.

Tuesday, December 15, 2020, 11:15

Vacuum at 1.0e-6 Torr. Turned bias power supply on, starting HV ramp at 500 V increments, increasing every 30-50 seconds seconds or so.

Tuesday, December 15, 2020, 12:47

Reached 50 kV. Not a single dip in voltage, significant current bump, or change in vacuum up to this point. Will hold for 10 minutes before continuing.

Tuesday, December 15, 2020, 12:57

Continuing voltage ramp. Decreasing increments to 250 V as this is uncharted territory, and that rate of increase seemed safe yesterday. Will also hold at each voltage for about 2 minutes after no signs of activity.

Tuesday, December 15, 2020, 13:04

Small dip in voltage and wiggle in current at 50.75 kV, no change in vacuum.

Spark at 51.25 kV with change in vacuum; reduced voltage temporarily. Did the same at 51.75 kV. Did the same at 52 kV, but let it sort itself out this time since it didn't seem too violent.

Actual spark at 52.25 kV with big voltage drop, and I saw it happen. On the vacuum gap side, somewhere in the flat plane and close to the middle. Another spark after about 3 minutes of holding. Just missed recording it but I saw it on the feed of the GoPro; maybe in a similar location as the previous. Another 1 minute later, didn't see it this time. The last two had no effect on vacuum.

Tuesday, December 15, 2020, 13:31

5 minutes since last spark. Raising voltage again, this time recording with GoPro. Spark captured at 53 kV. No change in vacuum... until a minute later.

Tuesday, December 15, 2020, 14:46

55 kV. Each time voltage is raised, it takes a couple seconds to reach a stable voltage. During this time the current limit of 0.005 mA seems to be drawn. Will reduce current limit to 0.001 mA to see effect. Dumped StripTool data at 55.25 kV.

Recorded spark at 56 kV. Voltage took longer to recover as a result of the reduced current limit.

58.5 kV. Effect of reducing current limit seems to make it take longer to reach a stable voltage. I think this is a good thing as it should smooth out the conditioning. Sparked here twice, reduced voltage for a bit before bringing back up again.

Tuesday, December 15, 2020, 16:23

60 kV. Sparked twice. Carla observed some: a couple small ones on the face of the insulator as the voltage was recovering from the first spark followed by a large one that went all the way across. Only the larger events seem to be captured by the GoPro.

Tuesday, December 15, 2020, 16:47

Finished holding at 60 kV to 20 minutes with no sparks other than the other two previously mentioned. Resuming voltage increases.

Tuesday, December 15, 2020, 17:02

61.5 kV. Small spark but not full breakdown, then a large spark that cut voltage to 0 V. Voltage dropped relatively slowly to about 48 kV. Lowered the voltage limit to 44 kV. During this entire time, 0.001 mA of current was being drawn. Carla started raising voltage while increasing the current limit as needed to reach the set voltage.

Tuesday, December 15, 2020, 17:44

Back at 60 kV and holding. Drawing 0.005 mA to 0.006 mA though. This is different from earlier when it was holding 60 kV with no current draw.

Tuesday, December 15, 2020, 19:02

Held 60 kV for an hour with current staying constant around 0.005 mA. Ramped down (first ramped down current to see effect) and then ramped down voltage. Shut off power supply.

Feedthrough R had a flange installed with a HV feedthrough on it for TM3 service tray prototype HV tests. It was replaced today with the original blank flange.

Monday, August 23, 2021, 10:49: Aaron removed the Extorr RGA and install a blind instead.

When the new RGA arrives it will be changed.

Tuesday, March 29, 2016, 14:43: Roughing.

 Wednesday, March 30, 2016, 14:33: Venting   -AM

Wednesday, March 30, 2016, 16:31: Roughing.

Wednesday, March 30, 2016, 17:34 : Turbos started -AM

Wednesday, March 30, 2016, 18:50: Turbos at speed. Vacuum at 1.8E-6 T -AM

Thursday, March 31, 2016, 08:39: Opened water  supply for heat shield. Vacuum stable at 3.2E-7 T. No response on RGA.

Thursday, March 31, 2016, 08:48: Started heating Target. TGHT to 500A, TBHT to 170A @ 2/1 A/min.

Thursday, March 31, 2016, 09:07: Opened IV4. BIAS/EZL/EE to 30/13/1.5 kV

Friday, April 01, 2016, 17:53: Ramping down TGHT/TBHT -AM

Monday, April 04, 2016, 08:32: Source off. Closed IV4. Stopped the Turbo pumps.

Monday, April 04, 2016, 09:49: Venting.

Monday, April 04, 2016, 11:31: Begin roughing. (No plasma electrode)

Monday, April 04, 2016, 12:47: Started Turbos and Ion gauge

Tuesday, April 05, 2016, 09:09: Open water, Vacuum increased from 3.7E-07 to 2.2E-06 (roughly). Leak detected, Confirmed via RGA, Water increased from 7.0E-7T to 5.8E-6T.

Tuesday, April 05, 2016, 09:17: Turbo Pumps stopped. Ion gauge shut off. RGA off.

Tuesday, April 05, 2016, 10:28: Venting for inspection.

Tuesday, April 05, 2016, 11:31: Inspect, re-tighten with new seals.. Begin roughing.

Tuesday, April 05, 2016, 11:54: Turbo pumps started.

Tuesday, April 05, 2016, 11:59: Ion gauge turned on.

Tuesday, April 05, 2016, 15:45: Opened water for heat shield. Vacuum stable @ 6.4E-7T - 6.8E-7T.

 Tuesday, April 05, 2016, 16:07: Vacuum stable @6.4E-7T.

Wednesday, April 06, 2016, 09:09: Started auto ramping up to 500A and 200A at 2A/min BIAS/EZL/EE to 30/13/1.5 KV

Wednesday, April 06, 2016, 09:22: Opened IV4. Switched on optics.

Wednesday, April 06, 2016, 14:29: Continue auto ramp up to 580A and 230A at 2A/min.

Thursday, April 07, 2016, 13:30: Most of the salts have evaporated FC0: at 3E-10A

Thursday, April 07, 2016, 14:10: Ramp down 2A/min.

Friday, April 08, 2016, 08:57: Ramp up 2A/min to 100A and 50A. ANODE to 200V.

Friday, April 08, 2016, 13:50: Ramp up 2A/min to 500A and 200A.

Monday, April 11, 2016, 08:29: Ramp up 2A/min to 580A and 230A. Vacuum stable @ 2.9E-7T

Monday, April 11, 2016, 09:44: ANODE current increased from 0 to 16 mA during the ramp up. -AM

Monday, April 11, 2016, 11:36: Increased TGHT voltage limit to 7.35 V. ANODE current now at 18 mA -AM

Monday, April 11, 2016, 16:00: BIAS / EZL / EE to 30 / 13 / 1.5 kV -AM

Tuesday, April 12, 2016, 08:47: Ramp Down 2A/min 230A to 200A TBHT only.

Tuesday, April 12, 2016, 09:31: Ramp Down 2A/min 580A to 500A TGHT only.

Tuesday, April 12, 2016, 13:55: Ramp up 2A/min 500A to 580A TGHT only.

 Tuesday, April 12, 2016, 15:43: Ramp up 2A/min 580A to 590A, Voltage limit increased to 7.50 TGHT only.

Tuesday, April 12, 2016, 15:59: Ramp down 2A/min and 1A/min.

Wednesday, April 13, 2016, 08:04 : RGA off.

Wednesday, April 13, 2016, 08:20: Source off. IV4 closed. Turbo pumps off.

Wednesday, April 13, 2016, 09:38: Venting.

Wednesday, April 13, 2016, 10:59: Venting paused.

Wednesday, April 13, 2016, 11:03: Venting Continued.

Wednesday, April 13, 2016, 11:24: Venting complete. RP#1 removed. (No plasma electrode).

Wednesday, April 13, 2016, 13:03: Begin roughing. (Plasma electrode in. Salts in)

Wednesday, April 13, 2016, 13:34: Turbo pumps started.

Wednesday, April 13, 2016, 13:39: Ion Gauge on.

Thursday, April 14, 2016, 08:13: Open water to heat shield. Vacuum stable at 3.3E-7T.

Thursday, April 14, 2016, 08:19: Isolation valve opened. Auto ramping TGHT/TBHT to 300A/200A @ 2A/min.

Thursday, April 14, 2016, 08:33: Turned on optics. BIAS/EZL/EE to 30/13/1.5kV.

Thursday, April 14, 2016, 15:20: Ramping down TGHT from 300A to 250A @ 2A/min.

Friday, April 15, 2016, 8:23:  Slow ramping TGHT to 300A/ @ 1/2A/min.

Friday, April 15, 2016, 10:30: Begin ramping down TGHT/TBHT. @3A/2A per min.

Friday, April 15, 2016, 12:54: Sources off.

Friday, April 15, 2016, 13:09 :Water lines purged & power down.

Monday, April 18, 2016, 08:23: Opened water. Auto ramping TGHT/TBHT to 300A/200A @ 3A/2A per min. BIAS/EZL/EE to 30/13/1.5kV

Monday, April 18, 2016, 09:58: Ramping TBHT to 230A @ 2A/min

Monday, April 18, 2016, 12:54: Sources off. Ramping down @ 2A/min.

Tuesday, April 19, 2016, 09:37 : BIAS and EE off - AM

Tuesday, April 19, 2016, 15:30: Water, Ion gauge and Turbos off. 

Thursday, April 21, 2016, 13:41: Venting - AM

Thursday, April 21, 2016, 14:25: Begin pumping down.

Thursday, April 21, 2016, 15:02: Turbo pumps started.

Thursday, April 21, 2016, 15:34: Ion gauge on.

Thursday, April 21, 2016, 15:43: RGA on

Friday, April 22, 2016, 08:30: Opened water  supply for heat shield. Vacuum stable at 2.4E-7 T. No response on RGA.

Friday, April 22, 2016, 08:44: Anode breaker switched on. While off, a charge was measured via TSH:ANODE:RDCUR.

Monday, April 25, 2016, 08:08: Noticed Turbo pump 1 shut down around roughly 4 pm Sunday afternoon. Will attempt restart.

Monday, April 25, 2016, 08:15: Interlocks bypassed for TP1, Pump Restarted.

Monday, April 25, 2016, 08:23: TP1 @ speed. Vacuum recovered to 1.9E-7 T

 Monday, April 25, 2016, 08:41: IV4 opened. Auto ramping TGHT/TBHT to 400A/150A @ 2A/min.

Monday, April 25, 2016, 08:42: Turned on optics. BIAS/EZL/EE to 30/13/1.5kV

Monday, April 25, 2016, 13:40: Mass scan (test)

Monday, April 25, 2016, 14:04: Ramp down TGHT to 350A @ 2A/min.

Tuesday, April 26, 2016, 08:10: Auto ramping TGHT/TBHT to 580A/220A @ 2A/min.

Tuesday, April 26, 2016, 14:10: Auto ramping TBHT to 230A @ 2A/min.

Tuesday, April 26, 2016, 14:10: Ramp Down TBHT to 220A @ 2A/min.

Wednesday, April 27, 2016, 07:55: Auto ramp down TGHT/TBHT @ 2A/min to 0A.

Wednesday, April 27, 2016, 12:56: Ramp down Complete. Sources and optics off. IV4 Closed

Thursday, April 28, 2016, 08:52

Monday, May 02, 2016, 13:32: Ion gauge off. Turbo pumps off.

Monday, May 02, 2016, 15:03: Water supply closed.

Monday, May 02, 2016, 15:11: Venting

Monday, May 02, 2016, 16:01: Roughing.

Monday, May 02, 2016, 16:35: Turbos started -AM

 Monday, May 02, 2016, 16:43: Turbos at speed. Vacuum at 1.6E-5 T - AM

Tuesday, May 03, 2016, 08:15: Opened water  supply for heat shield. Vacuum stable at 2.5E-7 T. No response on RGA.

Tuesday, May 03, 2016, 08:33: Sources on

Tuesday, May 03, 2016, 08:37: Auto ramping TGHT/TBHT to 420A/220A @ 2A/min

Tuesday, May 03, 2016, 08:44: Sources off Except TGHT/TBHT

Tuesday, May 03, 2016, 08:47:

 Tuesday, May 03, 2016, 12:42:

Tuesday, May 03, 2016, 15:29;

Wednesday, May 04, 2016, 08:00:

Wednesday, May 04, 2016, 12:53:

Wednesday, May 04, 2016, 14:56: TSHWSW-1: 8 Psi , Gauge below: 106 Psi

 Wednesday, May 04, 2016, 15:01: Begin auto-cooling @ 2A/min.

Thursday, May 05, 2016, 08:33: TBHT/TGHT off. Ion gauge off. Turbo pumps off.

Friday, May 06, 2016, 08:10: Water lines purged. Power supply off. Venting.

Friday, May 06, 2016, 10:18: Begin roughing

Venting: VCR on HS not closed

Friday, May 06, 2016, 12:58: Roughing

Friday, May 06, 2016, 13:22: Started turbos

Friday, May 06, 2016, 15:32: Vacuum at 1.2E-5 T

Monday, May 09, 2016, 09:07: Opened water  supply for heat shield. Vacuum stable at 2.78E-7 T.

Monday, May 09, 2016, 09:16:

Monday, May 09, 2016, 09:35: Auto ramping TGHT/TBHT to 420A/220A @ 2A/min.

Monday, May 09, 2016, 13:26:

Tuesday, May 10, 2016, 08:18:

Tuesday, May 10, 2016, 12:36:

Tuesday, May 10, 2016, 15:21:

Wednesday, May 11, 2016, 08:45:

Wednesday, May 11, 2016, 14:13:

Wednesday, May 11, 2016, 17:39: Ramping down TGHT/TBHT -AM

Thursday, May 12, 2016, 08:04: Ion gauge off. Turbo pumps off.

Thursday, May 12, 2016, 11:08: Water lines off/purged. Venting.

Thursday, May 12, 2016, 11:32: Source off, lock on.

Thursday, May 12, 2016, 13:00: Begin Roughing.

Thursday, May 12, 2016, 13:40: Turbo Pumps started

Thursday, May 12, 2016, 13:46: Ion gauge switched on.

Friday, May 13, 2016, 08:33: Opened water  supply for heat shield. Vacuum stable at 3.70E-7 T.

Friday, May 13, 2016, 10:01: Auto ramping TGHT/TBHT to 420A/220A @ 2A/min.

Friday, May 13, 2016, 13:55

Monday, May 16, 2016, 11:29:

Monday, May 16, 2016, 15:59:

Note: RGA misread.

Tuesday, May 17, 2016, 15:15:

Note: RGA Misread.

Wednesday, May 18, 2016, 14:30: IV4 open. FC0 open

Wednesday, May 18, 2016, 14:58: FC0 closed.

Thursday, May 19, 2016, 16:26:

Friday, May 20, 2016, 14:59:

Tuesday, May 24, 2016, 15:31:

Thursday, May 26, 2016, 15:18:

Friday, May 27, 2016, 15:27: IV4 Closed

Monday, May 30, 2016, 08:35:

Monday, May 30, 2016, 08:54: Auto ramp down TGHT/TBHT @ 2A/1A per min to 0A.

Tuesday, May 31, 2016, 08:25: Ion gauge off. Turbo pumps off.

Wednesday, June 01, 2016, 09:10: Venting

Wednesday, June 01, 2016, 9:45: Water lines purged, power off.

Wednesday, June 01, 2016, 10:02: Begin roughing.

Wednesday, June 01, 2016, 10:44: Turbo pumps started.

Wednesday, June 01, 2016, 10:47: Ion Gauge IG1 ON.

Wednesday, June 01, 2016, 10:50; Turbos at speed. Vacuum at 1.24-5T.

Thursday, June 02, 2016, 08:54: Sources and power supply on. RGA on. Open water. Vacuum stable at 2.1E-07T. Heat shield water flow at 4.0 lpm.

Thursday, June 02, 2016, 09:05: Auto ramping TGHT/TBHT @ 2A min to 580A/250A

Thursday, June 02, 2016, 09:10: BIAS/EZL/EE to 30/13/1.5kV. IV4 opened

Thursday, June 02, 2016, 11:54: Stopped auto ramping for lunch break. - AM

Thursday, June 02, 2016, 13:01 : Auto ramping resumed. -AM

Thursday, June 02, 2016, 15:03: TGHT/TBHT @ 580A/250A

Thursday, June 02, 2016, 20:43: ramping down TGHT/TBHT at 2 / 1 A/min - AM

Friday, June 03, 2016, 08:06: Source off. Turbo pumps off. Ion gauge off. IV4 closed.

Friday, June 03, 2016, 08:21: Supply water pressure: 103 PSI. Return pressure: 10 PSI.

Friday, June 03, 2016, 09:27: Venting.

Friday, June 03, 2016, 14:50: Turbo pumps started.

Friday, June 03, 2016, 15:22:  RGA on.

Monday, June 06, 2016, 15:40: RGA still connected. OK. Screen shot saved. Vacuum @ 8.5E-07T

Wednesday, June 08, 2016, 15:26: RGA off

Wednesday, June 08, 2016, 15:29: Ion gauge off. Turbo pumps off.

Thursday, June 09, 2016, 12:44: Venting -AM

Thursday, June 09, 2016, 14:50: Begin roughing.

Thursday, June 09, 2016, 15:34: Turbo pumps started.

Thursday, June 09, 2016, 15:42: Ion gauge on.

Friday, June 10, 2016, 08:27: RGA on.

Friday, June 10, 2016, 08:35: Water opened. RGA ok. Vacuum stable @ 1.9E-7T

Friday, June 10, 2016, 08:50: BIAS/EZL/EE to 30/13/1.5kV.

Friday, June 10, 2016, 08:52: Auto ramping TBHT only @ 2A min to 50A.

Friday, June 10, 2016, 10:02: Auto ramping TBHT only @ 1A min to 100A.

Friday, June 10, 2016, 11:14: Continue ramping to 150 A -AM

Friday, June 10, 2016, 11:28: Stopped ramping ag 110 A -AM

Monday, June 13, 2016, 08:12: Auto ramping TBHT only @ 1A min to 150A.

Monday, June 13, 2016, 09:59: Ramping to 150 A - AM

Monday, June 13, 2016, 15:51: Ramping down.

Tuesday, June 14, 2016, 07:47: IV4 Reset. Ion gauge off. Turbos off.

Tuesday, June 14, 2016, 07:52: Power/sources off. Water purged.

Tuesday, June 14, 2016, 09:20: Venting.

Tuesday, June 14, 2016, 10:46: Begin roughing.

Tuesday, June 14, 2016, 11:16: Turbo pumps started.

Tuesday, June 14, 2016, 11:23: Ion gauge on.

Wednesday, June 15, 2016, 07:45: Water opened. RGA ok. Vacuum stable @ 1.9E-7T. Power/sources on.

Wednesday, June 15, 2016, 08:24: BIAS / EZL / EE to 30 / 13 / 1.5 kV

Wednesday, June 15, 2016, 08:24: Ramping TBHT to 120 A at 1 A/min

Wednesday, June 15, 2016, 10:23: EZL P/S was not on. Switched on and set to 13 kV

Wednesday, June 15, 2016, 15:05: Ramping down.

Thursday, June 16, 2016, 08:57: IV4 reset. RGA off. Ion gauge off. Turbo pumps off.

Thursday, June 16, 2016, 13:22: Water lines purged. Power/sources off. Venting.

Thursday, June 16, 2016, 14:33: Roughing. Plasma Electrode re-attached. Salts replaced.

Thursday, June 16, 2016, 15:12: Turbo pumps started.

Thursday, June 16, 2016, 15:22: Ion gauge on.

Friday, June 17, 2016, 08:32: Water opened. RGA ok. Vacuum stable @ 2.4E-7T. Power/sources on.

Saturday, June 18, 2016, 09:31: Cool down started.

Monday, June 20, 2016, 09:48: Sources/power/voltages off.

Monday, June 20, 2016, 10:06: IV4 reset. Water lines purged.

 Monday, June 20, 2016, 10:11: RGA off. Ion gauge off. Turbos off.

Monday, June 20, 2016, 11:50: Venting