Thursday, July 22, 2021, 17:43: Roughing

New argon gas bottle installed.

Thursday, July 22, 2021, 18:16: Turbos on.

Thursday, July 22, 2021, 18:25: TP1A  timed out. TSG:CG1A is larger than TSG:CG1, that is the roughing lines are higher than the vacuum chamber. 

Thursday, July 22, 2021, 18:27: Bypassing TSG:BV1 to open it.

Thursday, July 22, 2021, 18:28: Turbo at speed.

Thursday, July 22, 2021, 18:28: Bypass removed.

Thursday, July 22, 2021, 18:28: IG1 on. 

Friday, July 23, 2021, 09:16: IG1 @ 1.69e-6 T.

Friday, July 23, 2021, 09:17: Waterlines open. No vacuum response

Friday, July 23, 2021, 10:09: While checking the gas connections I found out that inside the faraday cage there are a couple of connections missing:

Coil PS chasis ground disconnected

Resistor between  A and C (tbht pos and tght neg) disconnected.

Friday, July 23, 2021, 15:29: Gas system taken out to properly install a new "tee" union.

Friday, July 23, 2021, 15:29: IG1 @ 1.34e-6 T.

Friday, July 23, 2021, 15:52: Power/ sources on.

Friday, July 23, 2021, 15:54: Auto-ramping TGHT/TBHT to 580 A/ 280 A @ 2A/min

Friday, July 23, 2021, 15:58: IV4 open.

Saturday, July 24, 2021, 13:07: IG1 @ 1.25 e-6 T. 

Saturday, July 24, 2021, 18:34: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. One spark when Bias reached 30 kV.

Saturday, July 24, 2021, 18:36: Two consecutive sparks. Lowering to bias  29.5  kV to let it conditioned there for at least 10 minutes.

Saturday, July 24, 2021, 18:46: Bias to 30 kV. No sparks. 

Saturday, July 24, 2021, 18:59. No sparks. IG1 @ 1.16e-6 

Saturday, July 24, 2021, 19:26: Anode gets current limited  as of 2 V. Maybe there is a short somewhere else either inside the vacuum box, or on the service cap. Will check tomorrow

Saturday, July 24, 2021, 19:30: BIAS / EE / EZL @ 0 kV.

Saturday, July 24, 2021, 19:30: Auto-cooling to 0 A @ -2A/min

Monday, July 26, 2021, 09:00: IG1 @ 4.58e-7 T.

Monday, July 26, 2021, 09:17: No visible sparks 

Monday, July 26, 2021, 09:22: Power sources off. 

Monday, July 26, 2021, 13:20: After some tests I can conclude a couple of things:

• Anode/Cathode voltage power supply works fine and draws the right current for a 100 kOhm resistor. 
• When all cables are disconnected from TBHT and TGHT F/Ts there is continuity between them and HV common.

Monday, July 26, 2021, 14:52: IV4 closed

Monday, July 26, 2021, 14:53: Turbos off.

Oops!, forgot to turned off IG1 but interlock did it for me :p

 Monday, July 26, 2021, 17:19: After opening the vaccum chamber I found the portion of the capillary that goes to the target was touching the heatshield. Confirmed continuity with a multimeter.

Manually move it away and no continuity confirmed with multimeter.

FTs A-D recconected.

Bypassing anode interlock to check there is no short. Confirmed.

Preparing to close and pump.

Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!

1. Ramp up TGHT/TBH to 580/315 A.
2. Anode sweep
3. Mass scan without gas.
4. Coil sweep without gas
5. Gases in.
6. Mass scan with gases
7. Coil sweep with gasses
8. Efficiency measurements at highest and lowest FC6 current

COVID-19 protocol: buddy is Marla Cervantes

New idea: Screenshot e-log on the ISAC TS team notebook: 20-07-06 FEBIAD development part 3  (Web view)

Monday, July 06, 2020, 05:27: Auto-ramping TGHT/TBHT to 580/315 @ 2 A/min.

 Monday, July 06, 2020, 14:2: IV4 open.

Monday, July 06, 2020, 14:41: Anode sweep completed. No anode current registered.

Monday, July 06, 2020, 14:42:  HV spark. Anode current now show something. 13.431 mA. The source current however did not change after the spark.

Monday, July 06, 2020, 15:08: Anode sweep completed.

Monday, July 06, 2020, 15:19: IG1=2.57e-6T. 

Monday, July 06, 2020, 15:43: Mass scan completed.

Monday, July 06, 2020, 16:02: Coil sweep completed.

Monday, July 06, 2020, 16:04: FC6=8.40e-11A. IG1=2.59e-6T.

Monday, July 06, 2020, 16:07: SV1 closed. SV3 and SV4 open/closed x5.

Monday, July 06, 2020, 16:10: SV3 and SV4 open.

Monday, July 06, 2020, 16:12: SV1 closed. SV5 open/closed x5.

Monday, July 06, 2020, 16:13: SV5 open. No trip!!!

Monday, July 06, 2020, 16:25: FC6=1.16e-10A. IG1=2.74e-6T.

Monday, July 06, 2020, 16:33: Closing gas lines to prevent more leakage.

Tomorrow I will move to mass 40, to see if the ionization changes with the small gas load.

Monday, July 06, 2020, 16:36: Done for the day.

1. Gases in.
2. Mass scan with gases
3. Coil sweep with gasses
4. Efficiency measurements at highest and lowest FC6 current

Tuesday, July 07, 2020, 13:38:FC6=4.46e-11A. IG1=2.41e-6T.

SV3 and SV4 open/closed x5.  SV1 open.

Tuesday, July 07, 2020, 13:40: SV3 and SV4 open.

Tuesday, July 07, 2020, 13:41: SV1 closed. SV5 open/closed x5.

SV5 open. No trip!!!

Tuesday, July 07, 2020, 13:57: FC6=8.46e-11A. IG1=2.59e-6T.

Tuesday, July 07, 2020, 14:15: Mass scan completed.

Tuesday, July 07, 2020, 14:22: mass=39.82. A slight bump between the potassiums 38 and 41.

Tuesday, July 07, 2020, 14:38: Coil sweep completed.

Coil=0A. FC6=1.18e-11A. IG1=2.59e-6T.

Tuesday, July 07, 2020, 14:39: SV3 closed.

Tuesday, July 07, 2020, 14:47: FC6=1.26e-11A. IG1=2.59e-6T.

Tuesday, July 07, 2020, 14:48: SV4 closed.

Tuesday, July 07, 2020, 14:59: 1.15e-11A. IG1=2.41e-6T.

Tuesday, July 07, 2020, 15:00: SV5 closed.

Tuesday, July 07, 2020, 15:07: FC6=1.15e-11A. IG1=2.41e-6T.

Tuesday, July 07, 2020, 15:08: SV3 and SV4 open/closed x5. SV1 open.

Tuesday, July 07, 2020, 15:09: SV3 and SV4 open. SV1 closed.

Tuesday, July 07, 2020, 15:10:  SV5 open/closed x5. SV5 open. No trip!!!

Tuesday, July 07, 2020, 15:2: FC6=1.26e-11A. IG1=2.59e-6T.

Tuesday, July 07, 2020, 15:32: SV3 closed.

Tuesday, July 07, 2020, 15:44: FC6=1.4e-11A. IG1=2.57e-6T

Tuesday, July 07, 2020, 15:44: SV4 closed.

Tuesday, July 07, 2020, 16:01: FC6=1.15e-11A. IG1=2.39e-6T.

Tuesday, July 07, 2020, 16:01: SV5 closed.

 Tuesday, July 07, 2020, 16:31: Coil sweep with no gas completed.

Tuesday, July 07, 2020, 16:52: Mass scan completed.

Tuesday, July 07, 2020, 16:52: Done for the day.

1. Ramp up TBHT to 580/320 A.
2. Anode sweep
3. Mass scan without gas.
4. Coil sweep without gas
5. Gases in.
6. Mass scan with gases
7. Coil sweep with gasses
8. Efficiency measurements at highest FC6 current
9. Coil sweep without gas

Wednesday, July 08, 2020, 15:00: IG1=2.41e-6T.

 Wednesday, July 08, 2020, 15:29: Auto-ramping TBHT to 320A @ 2A/min.

Wednesday, July 08, 2020, 15:54: Anode sweep completed.

Wednesday, July 08, 2020, 16:33: Mass scan completed

Wednesday, July 08, 2020, 16:56: Coil completed.

Wednesday, July 08, 2020, 16:57. IG1=2.59e-6T. FC6=8.63e-11A.

Wednesday, July 08, 2020, 16:58: SV3 and SV4 open/closed x5. SV1 open.

Wednesday, July 08, 2020, 16:59: SV3 and SV4 open. SV1 closed.

Wednesday, July 08, 2020, 17:01: SV5 open/closed x5. SV5 open. No trip!!!

Wednesday, July 08, 2020, 17:12: FC6=9.20e-12A. IG1=2.65e-6T.

Wednesday, July 08, 2020, 17:44: Mass scan completed.

FC6=8.61e-12A. IG1=2.65e-6T.

Wednesday, July 08, 2020, 18:14: Coil sweep completed.

FC6=5.52e-11A. IG1=2.68e-6T.

Wednesday, July 08, 2020, 18:19: SV3 closed.

Wednesday, July 08, 2020, 18:25: FC6=6.8e-11A. IG1=2.65e-6T

Wednesday, July 08, 2020, 18:25: SV4 closed.

Wednesday, July 08, 2020, 18:39 : FC6=1.70e-11A. IG1=2.59e-6T.

Wednesday, July 08, 2020, 18:40 : SV5 closed.

Wednesday, July 08, 2020, 19:08: FC6=1.32e-11A. IG1=2.59e-6T.

Wednesday, July 08, 2020, 19:12: Sudden TBHT current increase of approx 2A. TBHT voltage seem to have droped a little 0.02V.

Wednesday, July 08, 2020, 19:14: Coil=0A. I'll wait until IG1 reading stabilizes.

Wednesday, July 08, 2020, 19:31: FC6=8.09e-12. IG1=2.48e-6T.

Wednesday, July 08, 2020, 19:31: TBHT returned to values  pior to sudden jump.

Wednesday, July 08, 2020, 19:58: Coil sweep with no gas completed.

Wednesday, July 08, 2020, 19:58: Done for the day.

1. Ramp down TBHT to 580/290 A.
2. Anode sweep
3. Coil sweep without gas
4. Gases in.
5. Coil sweep with gases
6. Ramp down test stand

Thursday, July 09, 2020, 09:53: Manually tap down TBHT to 290A @ ~~2A/min 

Thursday, July 09, 2020, 11:02: Anode sweep completed.

Thursday, July 09, 2020, 13:15: Coil=0A. IG1=2.24e-6T. FC0=2.48e-10A. FC6=7.43e-12A.

Thursday, July 09, 2020, 14:15: SV3 and SV4 open/closed x5. SV1 open.

Thursday, July 09, 2020, 14:16: SV3 and SV4 open. SV1 closed.

Thursday, July 09, 2020, 14:17 : SV5 open/closed x5. SV5 open. No trip!!!

Thursday, July 09, 2020, 14:31: FC6=3.03e-11A. IG1=2.50e-6T.

Thursday, July 09, 2020, 14:54: Coil sweep completed.

Thursday, July 09, 2020, 15:16: Anode=0 V.

Thursday, July 09, 2020, 15:16: SV3, SV4, SV5 closed

Thursday, July 09, 2020, 15:18: IV4 closed. timeout, reset it

Thursday, July 09, 2020, 15:20: BIAS/EZL/EE 0 kV.

Thursday, July 09, 2020, 15:21: Auto-cooling 2 A/min

Thursday, July 09, 2020, 15:25: Done for the day.

Monday, July 13, 2020, 07:01: Ion gauge & Turbo pumps off. Noted HV cage is already removed & PS locked out.

 Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!

The plan for today Wednesday, July 01, 2020 () is:

1. Coil sweep with gas lines opened.
2. Coil sweep with gas lines closed
3. Coil sweep with gas lines opened.
4. Efficiency measurements at highest and lowest FC6 signal
5. Mass scan.

COVID-19 protocol: buddy is Marla Cervantes

New idea: Screenshot e-log on the ISAC TS team notebook: 20-07-01 FEBIAD development part 2  (Web view)

Wednesday, July 01, 2020, 11:50: FC6=6.89e-12A. IG1=2.76e-6T.

FC6 has dropped 60% and the vacuum 15% with the respect to the last set of measurements.

Maybe the mass is not Ar+ but K? Or the decrease in pressure has this large correlation to FC6 magnitude.

Wednesday, July 01, 2020, 12:41: Coil sweep up and down completed.

Wednesday, July 01, 2020, 12:47: SV3, SV4, and SV5 close

IG1=2.59e-6T. The gas bottles are definitely running out, as there is no much change in pressure whether they are opened or closed

Wednesday, July 01, 2020, 13:15: Coil sweep completed.

Wednesday, July 01, 2020, 13:22: FC6 and IG1 increasing. Probably due to the coil still at 90A. reducing coil current.

Wednesday, July 01, 2020, 13:29: SV1 open. SV3 open/closed x5. SV4 open/closed x5.

Wednesday, July 01, 2020, 13:31: SV3 and SV4 open.

Wednesday, July 01, 2020, 13:32: SV1 closed. SV5 open/closed x5.

Wednesday, July 01, 2020, 13:33 SV5 open. No trip!!!

Wednesday, July 01, 2020, 14:30: Coil=0A.

Wednesday, July 01, 2020, 14:34 : SV3 closed.

Wednesday, July 01, 2020, 14:37:SV4 closed.

Coffee break.

Wednesday, July 01, 2020, 14:54: FC6~~9.76E-13A. IG1= 2.44e-6T

Wednesday, July 01, 2020, 15:11:SV1 open.  SV3 open/closed x5. SV4 open/closed x5.

Wednesday, July 01, 2020, 15:13:  SV3 and SV4 open.

Wednesday, July 01, 2020, 15:30: SV1 closed. SV5 open/closed x5.

Wednesday, July 01, 2020, 15:30: SV5 open. No trip!!!

Wednesday, July 01, 2020, 15:52: Coil=90A. FC6=1.41e-11A . IG1=2.68e-6T.

Wednesday, July 01, 2020, 15:57: FC6=1.16e-11A. IG1=2.68E-6T.

Wednesday, July 01, 2020, 15:58: SV3 closed.

Wednesday, July 01, 2020, 16:03: SV4 closed.

Wednesday, July 01, 2020, 16:07: 4.95e-12A. IG1=2.77e-6T.

Pressure increasing.

Wednesday, July 01, 2020, 16:14:SV1 open. FC6 decreasing momentarily, now increasing again due to the pressure increase.

Wednesday, July 01, 2020, 16:15: SV3 open/closed x5. SV4 open/closed x5.

IG1=3.1e-6T. FC6=6.00e-12A. Seems table now.

Wednesday, July 01, 2020, 16:17: SV3 and SV4 open.

Wednesday, July 01, 2020, 16:20: SV1 closed. SV5 open/closed x5.

Wednesday, July 01, 2020, 16:20: SV5 open. No trip!!!

 Wednesday, July 01, 2020, 16:44: FC6=1.12e-11A. IG1=3.14e-6T.

Wednesday, July 01, 2020, 17:40: Mass scan completed. Peaks are really bad resolved.

Wednesday, July 01, 2020, 17:43;FC0 in. Coil=0A.

Wednesday, July 01, 2020, 17:43: Done for the day

1. Increase cathode current to 310A.
2. Anode voltage sweep.
3. Mass scan at nominal values.
4. Coil sweep with gases
5. Efficiency measurement at highest coil current.
6. Coil sweep without gas.
7. Mass scan without gas.

 Thursday, July 02, 2020, 08:03: IG1=2.68e-6T. Vacuum decreased overnight, reading on FC0 decreased as well.

Thursday, July 02, 2020, 08:11: Auto-ramp TBHT to 310A @ 2A/min 

 Thursday, July 02, 2020, 09:15: FC0 increasing

Thursday, July 02, 2020, 10:30: FC0 seems to be stable now on 5.51e-9A. 

Thursday, July 02, 2020, 11:10: Mass scan completed.

 Thursday, July 02, 2020, 11:26: Mass=40.

Thursday, July 02, 2020, 13:47: Coil sweep completed.

Thursday, July 02, 2020, 13:48: Coil=90A. FC6=1.35e-10A. IG1=2.76e-6T.

Thursday, July 02, 2020, 13:49: SV3 closed.

Thursday, July 02, 2020, 13:52: SV4 closed.

Thursday, July 02, 2020, 14:00: SV5 closed.

Thursday, July 02, 2020, 14:02:  FC6=5.80e-11A. IG1=2.59e-6T.

Thursday, July 02, 2020, 14:08 : SV1 open.  SV3 open/closed x5. SV4 open/closed x5.

Thursday, July 02, 2020, 14:09:  SV3 and SV4 open.

Thursday, July 02, 2020, 14:11: SV1 closed. SV5 open/closed x5.

Thursday, July 02, 2020, 14:11: SV5 open. No trip!!!

Thursday, July 02, 2020, 14:30: FC6=1.40e-10A. IG1=2.96e-6T.

Thursday, July 02, 2020, 14:32: SV3 closed.

Thursday, July 02, 2020, 14:35 : SV4 closed.

Thursday, July 02, 2020, 14:50 : SV5 closed.

Thursday, July 02, 2020, 15:28:  FC6=3.34e-11A. IG1=2.59e-6T.

Thursday, July 02, 2020, 16:05: Coil sweep without gases finished.

 Thursday, July 02, 2020, 16:35: Mass scan finished.

Thursday, July 02, 2020, 16:51: Coil=90A.

Thursday, July 02, 2020, 17:07: Mass scan completed.

Thursday, July 02, 2020, 17:07 : SV1 open.  SV3 open/closed x5. SV4 open/closed x5.

Thursday, July 02, 2020, 17:09:  SV3 and SV4 open.

Thursday, July 02, 2020, 17:10: SV1 closed. SV5 open/closed x5.

The mini-pump line was open for a moment while SV5 was opened, there was no trip but this might have added air into the system.

Thursday, July 02, 2020, 17:13: SV5 open. No trip!!!

Thursday, July 02, 2020, 17:21: FC6=4.10e-11A. IG1=2.76e-6T.

Thursday, July 02, 2020, 17:38: Mass scan completed.

Thursday, July 02, 2020, 17:40: Coil=0A.

Thursday, July 02, 2020, 17:56: Mass scan finished.

Thursday, July 02, 2020, 17:57: Done for the day.

1. Emittance scans at difference coil values.

Friday, July 03, 2020, 11:45: Coil=0. Mass=40u

Friday, July 03, 2020, 11:45: FC6=4.12e-11A. IG1=2.72e-6T.

Friday, July 03, 2020, 12:13: Coil=0. Mass=28u. FC6=7.88e-10A. IG1=2.74e-6T.

 Friday, July 03, 2020, 12:25: Test Stand tripped and the lights around flicker. EPICS whiteout. Even turbos shut off.

Friday, July 03, 2020, 12:27: Called control room and they told that there were a couple of power bumps.

Friday, July 03, 2020, 12:41: EPICS restarted but still whiteout problem similar to e-log 702. Likely to submit a faulty report

Friday, July 03, 2020, 12:57: PLC restarted, EPICS workings.

Friday, July 03, 2020, 12:58: Turbos at speed.

Friday, July 03, 2020, 13:25: Source/Optics on.

Friday, July 03, 2020, 13:36: BIAS/EZL/EE @ 30/13/1.5 kV.

Friday, July 03, 2020, 13:39: IG1=2.15e-6T.

Friday, July 03, 2020, 13:41: Auto-ramping TGHT/TBHT to 400/200A @ 2A/min for the weekend.

Friday, July 03, 2020, 13:44: Done for the day. To continue on Monday.

 Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!

1. Optimize (tune) the beam to FC0 and then to FC6.
2. Compensate beam energy by substracting the value of anode voltage to the high voltage. Thursday, June 25, 2020, 16:07: FEBIAD is on cathode bias
   
3. Perform an efficiency measurement to know the correct work of the mini pump and also the time needed for 1 measurement.
4. Perform at least 3 efficiency measurements of the same configuration as a sanity check on the reproducibility of the measurements.

The system is prone to trip if the build-up pressure for the gas lines is higher than 7e-6T.  I will try to wait as long as reasonably possible to make sure the gas lines are pumped to good vacuum levels.

COVID-19 protocol: buddy is Marla Cervantes

New idea: Screenshot e-log on the ISAC TS team notebook: 20-06-26 FEBIAD development day  (Web view)

Thursday, June 25, 2020, 08:38:  TGHT / TBHT @ 580 / 280. Coil @ 0A. Vacuum @ 3.71e-06T. BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Anode @ 100 V.

Thursday, June 25, 2020, 10:34: TP6 tripped. Closed IV4 closed and reset it. TP6 on

Thursday, June 25, 2020, 10:41:IV4 open

Thursday, June 25, 2020, 10:54: Optimizing beam to FC0 with current tune.

Thursday, June 25, 2020, 12:19: New values for TPS:Q1,Q2,Q3,Q4. Better beam shape on RMP0A and 0B

Thursday, June 25, 2020, 12:33: I think there is something wrong with this  FEBIAD as the mass scan does not show any peaks.

I've noticed the word document from Aaron, and he observed peaks likely from surface ionized species. Furthermore there is no anode current readback on epics nor on the power supply.

Possbile culprits. The anode is not well attached to the 9-pin. The cathode temperature is extremely low and there are no electron-impact ionized species.

 Thursday, June 25, 2020, 12:52: Power supply is on cathode bias mode as well as all the service cap wiring.

Thursday, June 25, 2020, 13:03:  Back to old tunes. Mass scan still showing only surfaced ionized species.

 Thursday, June 25, 2020, 14:30:  Mass scan for 0V finished. Peaks at 38 and 28 u. 38 is Potassium, but 28 is odd, closest surface ionized species might be Al27 with an ionization potential of about 5.8 eV.

Thursday, June 25, 2020, 15:20 : Mass scan for 100V finished. Peaks still at 38 and 28 but with different intensities. Now there are features  what seem to be 18 and 14. Water and N respectively.

Thursday, June 25, 2020, 15:03: Manually tap TBHT to 290 A.

Thursday, June 25, 2020, 15:31: FC6 signal increased. Anode leakage current still showing 0.0 mA.

Thursday, June 25, 2020, 15:35: Manually tap TBHT to 295 A

Thursday, June 25, 2020, 15:58: Mass scan completed. More peaks showed up.

Thursday, June 25, 2020, 15:35: Manually tap TBHT to 300A. Anode leakage current still showing 0.0 mA.

Thursday, June 25, 2020, 16:30: Manually tap TBHT to 305A. Anode leakage current still showing 0.0 mA.

Increasing Anode to 500 V, now there is a reading of 1.2mA. However, there were sparks on the high voltage so this current might be a leakage current from the high voltage.

Thursday, June 25, 2020, 16:34: Lowering to 300A to run a mass scan.

Thursday, June 25, 2020, 16:59: Similar mass spectrum, the anode current is meaningless.

Thursday, June 25, 2020, 17:00: Mass 28 will be used for efficiency measurements.

Thursday, June 25, 2020, 17:15: SV3 closed.

Thursday, June 25, 2020, 17:20: SV4 closed.

Thursday, June 25, 2020, 17:38: SV5 closed.

Thursday, June 25, 2020, 17:39: SV1 opened (mini pump)

Thursday, June 25, 2020, 17:41: Opening and closing SV3 and SV4.

Thursday, June 25, 2020, 17:45: Opening SV5. System tripped.

Thursday, June 25, 2020, 17:51: I will open the cage  to see if the mini pump is on.

Thursday, June 25, 2020, 17:58: The mini-pump was off and unplug. Now connected and running.

 Thursday, June 25, 2020, 18:00: SV1 open.

Thursday, June 25, 2020, 18:10: SV1 closed

Thursday, June 25, 2020, 18:10: SV5 open. Negligible response on IG1.

Thursday, June 25, 2020, 18:13: SV5 off. SV3 and SV4 open.

Thursday, June 25, 2020, 18:14: SV1 open.

Thursday, June 25, 2020, 18:17: SV1 closed.

Thursday, June 25, 2020, 18:17: SV5 open/close/open. Maximum vacuum 6e-6T. This is very closed to the hard-coded interlock. Everything is off, so it will be better to have the vacuum response at least near 4 or 5 e-6T.

Thursday, June 25, 2020, 18:26: SV3 closed.

Thursday, June 25, 2020, 18:31: SV4 closed.

Thursday, June 25, 2020, 18:41: SV5 closed. SV1 open. Wait 15 min

Thursday, June 25, 2020, 19:02: Vacuum response 5e-6.

Thursday, June 25, 2020, 19:02: Auto-ramping TGHT / TBHT to 580 / 290 A @ 2 A per min.

 The plan for today Friday, June 26, 2020 is:

1. Ramp up high voltage to operation values
2. Mass scan at nominal values
3. Send m=28 beam to FC6
4. Perform an efficiency measurement to know the correct work of the mini pump and also the time needed for 1 measurement.
5. Perform at least 3 efficiency measurements of the same configuration as a sanity check on the reproducibility of the measurements.

Friday, June 26, 2020, 11:31: BIAS/EZL/EE @ 30/13/1.5 kV. Anode @ 150 V

Friday, June 26, 2020, 11:58: Mass scan completed.

 Friday, June 26, 2020, 12:0: Magnet set to m=28. FC9=1.17e-9A. IG1=3.42e-6T

Friday, June 26, 2020, 12:17: SV3 closed.

Friday, June 26, 2020, 12:24: No effect on FC6 reading.

Friday, June 26, 2020, 12:24: SV4 closed.

Friday, June 26, 2020, 12:35: FC6=5.5e-10T and seems to  flatten.

Friday, June 26, 2020, 12:44: FC6=5.33e-10.

Friday, June 26, 2020, 12:45: SV5 closed. FC6=5.18e-10 and decreasing.

SV5 closes the gas line segment to the ion source. The response on the ion current indicates that once the leakage lines are closed, there is still some gas in the lines causing the slow decrease on ion current.

There is approximately a factor of 2 increase for m=28 when the argon is used.

Friday, June 26, 2020, 12:52: SV1 on.

Friday, June 26, 2020, 12:52: SV3 open/closed x5

Friday, June 26, 2020, 12:53: SV4 open/closed x5

Friday, June 26, 2020, 12:54: SV3 and SV4 opened.

Friday, June 26, 2020, 12:56: SV1 closed

Friday, June 26, 2020, 12:57: SV1 opened

Friday, June 26, 2020, 12:59 SV1 closed. SV5 open/closed x5

Friday, June 26, 2020, 13:00: SV5 opened.  No trip!!!

Ion current increases when the valve is open. This indicated the build up pressure being release into the ion source. Max FC6=4.17e-9 A. Now decreasing.

Friday, June 26, 2020, 13:07: FC6 reading and IG1 reading approaching values previous to efficiency measurement.

Friday, June 26, 2020, 13:13: FC6=1.17e-9A. IG1=3.47e-6.

Total time for 1 efficiency measurement 50 minutes. The largest wait occurs for the current to stabilize.

Approximately 30 minutes when closing the valves, 15 minutes when opening them, and 10 minutes for roughing the lines.

Friday, June 26, 2020, 13:30: Same measurement for (my) sanity check. FC6=1.16e-9. IG1=3.51e-6T

Friday, June 26, 2020, 13:30: SV3 closed.

Friday, June 26, 2020, 13:35: SV4 closed.

Friday, June 26, 2020, 13:50: SV5 closed.

Friday, June 26, 2020, 13:51: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Friday, June 26, 2020, 13:53: SV3 and SV4 opened.

Friday, June 26, 2020, 13:57: FC6=4.87e-10A. IG1=3.38e-6T.

Friday, June 26, 2020, 13:59: SV1 closed. SV5 open/closed x5.

Friday, June 26, 2020, 14:00: SV5 open. No trip!!!

Friday, June 26, 2020, 14:00: FC6=2.9e-9A. IG1=4.1e-6T. and decreasing.

Friday, June 26, 2020, 14:14: FC6=1.16e-9. IG1=3.56e-6T

Total time for eff measurement=45 minutes

Friday, June 26, 2020, 14:20: Last efficiency measurement for these values. Then lunch break.

Friday, June 26, 2020, 14:23: SV3 closed.

Friday, June 26, 2020, 14:29: SV4 closed.

 Friday, June 26, 2020, 14:42: SV5 closed.

Friday, June 26, 2020, 14:43: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Friday, June 26, 2020, 14:44: SV3 and SV4 opened

Friday, June 26, 2020, 14:49: FC6=4.71e-10. IG1=3.29e-6T.

 Friday, June 26, 2020, 14:51: SV1 closed. SV5 open/closed x5.

Friday, June 26, 2020, 14:52: SV5 open. No trip!!!

Friday, June 26, 2020, 14:52: FC6=3.2e-9A. IG1=4.13e-6T.

 Friday, June 26, 2020, 15:05: FC6=1.12e-9A. IG1=3.49e-6T.

Total time for eff measurement=43 minutes.

Friday, June 26, 2020, 15:33: By averaging all readings, the gas signal corresponds to 57.7% of the entire signal.  There is an increase factor of  2.36. No efficiency can be estimated as the signal is not from the gas bottle.

Friday, June 26, 2020, 15:43: Switching to mass 40 (Ar+1).

 Friday, June 26, 2020, 15:56: I think I am set on mass 40 (Ar+) The signal varies when  adjusting the voltage. Proceeding to efficiency measurement.

Friday, June 26, 2020, 15:59: FC6=2.49e-11. IG1=3.67e-6T

Friday, June 26, 2020, 16:00: SV3 closed.

Friday, June 26, 2020, 16:05: SV4 closed.

Friday, June 26, 2020, 16:20 : SV5 closed.

Friday, June 26, 2020, 16:20 : SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Friday, June 26, 2020, 16:21 : SV3 and SV4 opened.

Friday, June 26, 2020, 16:21 : FC6=1.06e-11A. IG1=3.40e-6T

Friday, June 26, 2020, 16:24 : SV1 closed. SV5 open/closed x5.

Friday, June 26, 2020, 16:24 : SV5 open. No trip!!!

Friday, June 26, 2020, 16:25  FC6=3.7e-11. IG1=4.30e-6T

Friday, June 26, 2020, 16:28: The proportion between gas signal and background is 57.4% of the entire signal. Very similar result to  previous mass. There is also an increase factor of 2.35 for Ar+1

Friday, June 26, 2020, 16:37: FC6=2.44e-11. IG1=3.58e-6

Friday, June 26, 2020, 16:43: Coil=20 A. This provides the smallest ion current signal FC6=1.13e-11.

Friday, June 26, 2020, 16:49: FC6=1.13e-11. IG1=3.58e-6T.

Friday, June 26, 2020, 16:50: SV3 closed.

Friday, June 26, 2020, 16:54 :SV4 closed.

Friday, June 26, 2020, 17:09 :SV5 closed.

Friday, June 26, 2020, 17:10 :SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Friday, June 26, 2020, 17:10 :SV3 and SV4 opened.

Friday, June 26, 2020, 17:10 :FC6=1.51e-12A. IG1=3.38e-6T

The proportion of this measurement is 86.63%.

Friday, June 26, 2020, 17:12 :SV1 closed. SV5 open/closed x5.

Friday, June 26, 2020, 17:12 :SV5 open. No trip!!!.

Friday, June 26, 2020, 17:22 :  FC6=3.7e-11. IG1=4.30e-6T

 Friday, June 26, 2020, 17:24:  FC6 reading keeps decreasing and it's already below the initial current.

I suspect that the ion current that was read when the coil was changed corresponds to superposition of previously ionized species and the coil adjusted those charges. Once flushed, the neutral atoms will established a new equilibrium.

NOTE: Will setting the anode to 0 V flushed the source? Test it tomorrow.

Friday, June 26, 2020, 17:43: FC6 signal is increasing. I'll leave it as is.

Saturday, June 27, 2020, 11:47: FC6=1.06e-11A. IG1=3.40e-6T. Similar to the value of the current prior to the efficiency measurement.

 The plan for today Saturday, June 27, 2020 is:

1. Perform an efficiency for coil 20. This might be a long measurement if the value has to increases again. If after 1.5 h the signal still shows a mismatch, then I'll try to flush the source by setting the anode to 0V
2. Redo efficiency measurement.
3. Try another coil value.

Saturday, June 27, 2020, 11:52: FC6=1.06e-11. IG1=3.40e-6T

Saturday, June 27, 2020, 11:55: SV3 closed.

Saturday, June 27, 2020, 12:03 : SV4 closed.

Saturday, June 27, 2020, 12:20 : SV5 closed.

Saturday, June 27, 2020, 12:20: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 12:21 : SV3 and SV4 opened.

Saturday, June 27, 2020, 12:23 : FC6=6.76e-12A. IG1=3.14e-6T

Saturday, June 27, 2020, 12:26 : SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 12:27 : SV5 open. No trip!!!

Saturday, June 27, 2020, 12:42: FC6=1.01e-11A. IG1=3.38e-6T.

Saturday, June 27, 2020, 12:48Coil to 0, then to 20A. Anode voltage to 0V then to 150V. FC6=1.05e-11A.

Saturday, June 27, 2020, 12:50: SV3 closed.

Saturday, June 27, 2020, 12:55 : SV4 closed.

Saturday, June 27, 2020, 13:01: SV5 closed

Saturday, June 27, 2020, 13:01 : SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 13:02: SV5 closed.

Saturday, June 27, 2020, 13:04: TSG:CB1 and TPS:VCB3 tripped. now on

Saturday, June 27, 2020, 13:04: FC6=6.64e-12A. IG1=3.23e-6T.

Saturday, June 27, 2020, 13:05:  SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 13:07: SV5 open. No trip!!!

Saturday, June 27, 2020, 13:13: FC6=1.03e-11A. IG1=3.38e-6T.

Saturday, June 27, 2020, 13:15: Now I will sweep the coil from  0 to 20. Then run the efficiency measurement again.

Saturday, June 27, 2020, 13:22: Coil=15A provides the minimum current but I will stay with 20 A.

Saturday, June 27, 2020, 13:23 : SV3 closed

Saturday, June 27, 2020, 13:28 : SV4 closed.

Saturday, June 27, 2020, 13:37: SV5 closed.

Saturday, June 27, 2020, 13:42: FC6=6.60e-12A. IG1=3.23e-6T.

By averaging all the readings for coil 20. The proportion of current coming from the gas is only 36%. There is an increase factor of 1.56 compared to the no gas situation.

Saturday, June 27, 2020, 13:49: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 13:51: SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 13:52: SV5 open. No trip!!!

Saturday, June 27, 2020, 14:08 : FC6=1.00e-11A. IG1=3.38e-6T.

Saturday, June 27, 2020, 14:10: Coil=40A. This values gives a similar current as coil=0A.

Saturday, June 27, 2020, 14:11: FC6=2.65e-11A. IG1=3.38e-6T.

Saturday, June 27, 2020, 14:19: SV3 closed.

Saturday, June 27, 2020, 14:26: FC6=2.45e-11.

Saturday, June 27, 2020, 14:27:SV4 closed.

Lunch break.

Saturday, June 27, 2020, 15:23: IG1=9.65e-12. IG1=3.20e-6T.

Saturday, June 27, 2020, 15:24: SV5 closed.

Saturday, June 27, 2020, 15:33: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 15:34: SV3 and SV4 opened.

Saturday, June 27, 2020, 15:55: SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 15:56: SV5 open. No trip!!!

Saturday, June 27, 2020, 16:14: FC6=1.95e-11A. IG1=3.40e-6T.

Again, the base current with all the gas is note the same as prior to the effciciency measurment.

Saturday, June 27, 2020, 16:15 : Anode to 0V.

Saturday, June 27, 2020, 16:16 Anode=150 V. FC6=2.01e-11A.

Saturday, June 27, 2020, 16:18:Coil=0A.

Saturday, June 27, 2020, 16:19 Coil=40A. FC6=1.98e-11A.

Saturday, June 27, 2020, 16:20 Coil to 0. Anode to 0.

Saturday, June 27, 2020, 16:20 Anode=150V, coil=40A.

Saturday, June 27, 2020, 16:22: FC6=1.97e-11

Saturday, June 27, 2020, 16:32: Coil to 0. Anode to 0.

Saturday, June 27, 2020, 16:33: Coil=40A. Anode 150V.

Saturday, June 27, 2020, 16:34:FC6=1.97e-11A.

Saturday, June 27, 2020, 16:36: SV3 closed.

Saturday, June 27, 2020, 16:43: SV4 closed.

Saturday, June 27, 2020, 16:50: SV5 closed.

Saturday, June 27, 2020, 16:51: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 16:52 :SV3 and SV4 opened.

Saturday, June 27, 2020, 16:55: FC6=7.64e-12. IG1=3.31e-6

Saturday, June 27, 2020, 16:56 : SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 16:57 : SV5 open. No trip!!!

 Saturday, June 27, 2020, 17:1: FC6=1.91e-11A

 What's FC6 value for coil=0?

Saturday, June 27, 2020, 17:17: Coil=0

 Saturday, June 27, 2020, 17:18: FC6=2.71e-11A.

Now coil=55A gives a similar current as coil=0... Back to coil=40A.

Saturday, June 27, 2020, 17:53: SV3 closed.

Saturday, June 27, 2020, 17:58: SV4 closed.

 Saturday, June 27, 2020, 18:07: SV5 closed.

FC6=7.47e-12A. IG1=3.23e-6T.

Saturday, June 27, 2020, 18:07 : The second set of measurements for coil=40. The proportion of current coming from the gas is 59.94%. There is an increase factor of  2.50 compared to the no gas situation.

Saturday, June 27, 2020, 18:07: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Saturday, June 27, 2020, 18:08: SV3 and SV4 opened.

Saturday, June 27, 2020, 18:18: SV1 closed. SV5 open/closed x5.

Saturday, June 27, 2020, 18:18 : SV5 open. No trip!!!

 Saturday, June 27, 2020, 18:4: FC6=1.84e-11. IG1=3.38e-6T.

 Saturday, June 27, 2020, 18:4: Done for today.

Sunday, June 28, 2020, 14:38: FC6=1.62e-11A. IG1=3.30e-6T.

 The plan for today Sunday, June 28, 2020 is:

1. Perform an efficiency  measurement for coil=65A.
2. Coil sweep with all gas lines closed.

 Sunday, June 28, 2020, 14:50: Coil=65A. Provides highest current. For coil<100A.

Sunday, June 28, 2020, 14:59: FC6=2.16e-11A. IG1=3.31e-6T.

Sunday, June 28, 2020, 15:08: SV3 closed.

Sunday, June 28, 2020, 15:13:FC6=1.94e-11.A.

Sunday, June 28, 2020, 15:14. SV4 closed.

Sunday, June 28, 2020, 15:30:SV5 closed.

Sunday, June 28, 2020, 15:30: FC6=3.82e-12A. IG1=3.14e-8T.

Sunday, June 28, 2020, 15:32: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Sunday, June 28, 2020, 15:32: SV3 and SV4 opened.

Sunday, June 28, 2020, 15:37:FC6=3.22e-12A. IG1=3.14e-6T.

Sunday, June 28, 2020, 15:38: SV1 closed. SV5 open/closed x5.

Sunday, June 28, 2020, 15:38: SV5 open. No trip!!!

Sunday, June 28, 2020, 15:55: FC6=1.79e-11A. IG1=3.31e-6T.

Sunday, June 28, 2020, 16:02: SV3 closed.

Sunday, June 28, 2020, 16:08: SV4 closed.

Sunday, June 28, 2020, 16:22: SV5 closed.

Sunday, June 28, 2020, 16:22: 3.31e-12A. IG1=3.05e-6T.

Sunday, June 28, 2020, 16:23: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Sunday, June 28, 2020, 16:24: SV3 and SV4 opened.

Sunday, June 28, 2020, 16:25: SV1 closed. SV5 open/closed x5.

Sunday, June 28, 2020, 16:25: SV5 open. No trip!!!

Sunday, June 28, 2020, 16:37: 1.82e-11. IG1=3.23-8T.

Sunday, June 28, 2020, 16:51:SV5 closed.

Sunday, June 28, 2020, 16:51:SV3 and SV4 closed.

Sunday, June 28, 2020, 17:25: Coil sweep finished .

Sunday, June 28, 2020, 17:26: SV1 on. SV3 open/closed x5. SV4 open/closed x5.

Sunday, June 28, 2020, 17:27: SV3 and SV4 opened.

Sunday, June 28, 2020, 17:28: SV1 closed. SV5 open/closed x5.

Sunday, June 28, 2020, 17:28 :SV5 open. No trip!!!

Sunday, June 28, 2020, 17:29: Coil=0A.

Sunday, June 28, 2020, 17:33: Done for the day.

Tuesday, December 02, 2024, 15:35    - Target loaded into the test stand

Thursday, December 03, 2024, 14:33 - as per elog entry 1033, test stand has been changed to CATHODE mode, and wiring within the Faraday cage has been altered appropriately. Additionally, a GeMov resistor has been added to potentially reduce the sparking problems that have previously tripped the TGHT power supply

Thursday, December 04, 2024, 10:00    - Roughing pump having trouble reaching suitable vacuum - possible replacement required.

Thursday, December 05, 2024, 13:37  - Turbo pumps on

Wednesday, December 11, 2024, 15:02   dropped bias/ee/ezl to 0

Wednesday, December 11, 2024, 15:02    Must cool target to investigate Cathode short. Prior to installation, target isolation was confirmed. If the cathode dropped to contact the copper plate shielding the coil, this would be evidence to support keeping the retainer.

Thursday, December 12, 2024, 09:24   after cooling, cathode power supply was checked to see if shorted and it is indeed still shorted out.

 Thursday, December 12, 2024, 09:25   turning off turbo pumps to spin down 

Thursday, December 12, 2024, 11:30:     venting chamber  

 Friday December 13:   after venting the chamber and removing the target. The target appears to be unshorted and intact. However, upon inspection of the test stand, there appears to be a ~100Ω load between the cathode and ground. This load is able to sustain voltage from the cathode power supply, but draws a significant amount of current. It is too much for operation, and might be further aggravated by the presence of the target. Further, when the TGHT and TBHT terminals are shorted together, the resistance from cathode to ground drops to ~1Ω. Perhaps this could be associated with the installation of the TGHT power supply, as FEBIAD has not been run on this machine since it was installed.   Wiring at the feedthroughs as been quadruple checked, I don't believe that the problem lies there.

With no target in place, the cathode was able to hold a voltage, despite drawing 100+mA current. However, I was unable to repeat further tests, as the power supply stopped responding. Despite ramping up to ~10V in epics, the readback is 0V/0A, unlike before.

 Tuesday, January 07, 2025, 16:00 -  Target assembly installed in test stand. electrical connections assessed:

Prior to installation:  oven and cathode isolated from heatshield. no shorts

After installation:  Oven and Cathode 35kΩ from HVC. 

Tuesday, January 07, 2025, 16:05  -  pumping down to rough vacuum

Tuesday, January 07, 2025, 16:45  TP1B on.      TP1A on.  Pumping down

Prior to proceeding, ensure that ALL water cooling is turned on, as it was all drained and empty for the past 2 weeks.

Tuesday, January 07, 2025, 17:10   Beam line TP1 and TP2 on. 

Wednesday, January 08, 2025, 09:01    chamber pressure at 1.0E-6 T,  beamline pressure at 3.7E-7 T

 Wednesday, January 08, 2025, 10:32 - water cooling all on. no effect on vacuum pressure. 

Wednesday, January 08, 2025, 10:33    - Increased argon pressure in the gas line has no effect on vacuum pressure. it is registered on the pressure gauge at feedthrough.- 

  - However, roughing pump doesn't seem to be venting the argon gas line. I disconnected the copper line to the venting valve to confirm pump activity. - no activity detectable. 

- removed pump from assembly. switching on by itself shows no evidence of pump functionality. When on, pump is heating to very hot temperatures. I've emailed Edi at vacuum group to investigate further.

Wednesday, January 08, 2025, 15:02   - Vacuum group says that the pump is dead. We can replace it if we'd like, but i've created a temporary solution by connecting the argon venting valve to the backing pumps. For the sake of being careful (although this may be overly cautious), we must avoid opening this venting valve without first isolating the connection from the turbo pumps via closing TSG:PV1

Wednesday, January 08, 2025, 15:04  ramping up COIL to ensure conditioning against outgassing later.  vacuum appears to be stabilizing below 2e-6 T

Wednesday, January 08, 2025, 16:32   vacuum recovered, beginning to heat at 1A/30s up to 580A/230A    TGHT/TBHT

Wednesday, January 08, 2025, 22:32   with COIL on, the vacuum pressure increased to ~2.2E-6 T before beginning to recover, leaving on to encourage vacuum recovery.

Thursday, January 09, 2025, 08:27 Vacuum at 1.0E-6 T.  COIL off.

Thursday, January 09, 2025, 10:15   Argon gas line at 0.5 bar.a

Thursday, January 09, 2025, 10:56   increasing BIAS/EE/EZL  to 30/1.5/13 kV 

Thursday, January 09, 2025, 11:19    turning on optics elements. TMS:Q2 is timed out and possibly unalive. - must be investigated

Thursday, January 09, 2025, 12:38  HV at 30kV. monitoring for spark activity 

Thursday, January 09, 2025, 12:53  over 15 minutes, there was just one possible spark.  I see also that TPS:Q2 (quadrupole prior to FC0) seems to be half-down. i can't seem to get it to stop timing out and recharge. must investigate further

after investigating further and attempting to reset/reconfigure. I tried power cycling the canbus controller as well. In the end, controls group determined that this controller needed to be replaced.

 Thursday, January 09, 2025, 14:34   all optics set.  setting COIL CATHODE to 40A 120V.   CATHODE is leaking 0 current. (0.000 mA readback).  

Thursday, January 09, 2025, 14:37   reading 2.91e-8A at FC0 . found Argon peak at 40 exactly. MB1 current 96.4561 A

Thursday, January 09, 2025, 14:42 using COIL CATHODE scan program to optimize. (data file measure_id=9106)  A local maximum was identified at 140V with 40A coil current. However, a short seems to show up when the cathode voltage reaches ~130V. it lets through only ~10mA at 130 and then will release up to at least 100mA at 140V.

As time passes, the sustained voltage drops over time, given a current limit of 100mA. it dropped to ~50V. On subsequent increases of the power supply, current begins leaking through at ~65V. 

Given this, I will continue (while monitoring the cathode power supply) with a cathode coil of 50V 90A.

Thursday, January 09, 2025, 15:28  FC0 = 2.21 e-8 A.    FC6 at 3.21e-10A   RPM taken for all 4.

Thursday, January 09, 2025, 16:04   mass scan complete  -  2025_01_09-16_01 FEBIAD no retainer 1.txt CATHODE voltage was stable at 50V throughout.

 Thursday, January 09, 2025, 16:07  decreasing BIAS/EE/EZL to 0, 0, 0

 Friday, January 10, 2025, 09:09    ramping BIAS/EE/EZL  to 30/1.5/13 kV 

Friday, January 10, 2025, 11:51 Increasing COIL and CATHODE to 90A and 50V (was able to ramp cathode up to 100V before seeing current loss)

Friday, January 10, 2025, 11:53   FC0 = 1.7e-8 A.    FC6 = 4.9e-10 A    wire scans taken.

Friday, January 10, 2025, 12:00     Beginning mass scan with COIL CATHODE at 90A 50V   - 2025_01_10-12_28 FEBIAD no retainer 2.txt

Friday, January 10, 2025, 12:28   decreasing BIAS/EE/EZL to 0, 0, 0

 Friday, January 10, 2025, 13:15   gas inflow OFF (at rough vacuum pressure). Ramping up again BIAS/EE/EZL  to 30/1.5/13 kV 

Friday, January 10, 2025, 14:27   FC0 = 1.22e-8A.   FC6 = 2.93e-12A  (at 40) .   mass scan taken  = 2025_01_10-14_18 FEBIAD no retainer 3 argon off.txt     wire scans taken.

Friday, January 10, 2025, 14:28   TGHT TBHT cooling to 0A 0A at 1A/30s
 

Monday, January 13, 2025, 11:00   testing cathode isolation on cold target by ramping up cathode voltage until breakdown.   At 120V, CATHODE current is 2.4mA. (125V, 8.5mA), at 130V, current limiting and dropping voltage.

 Monday, January 13, 2025, 11:10   power supplies off. Winding down turbo pumps for chamber evac

Monday, January 13, 2025, 13:07   venting 

with Fernando

Tuesday, October 24, 2017: Testing setup with triple coil

Wednesday, October 25, 2017: Field mapping at 70 A and current/field measurements on triple coil.

The right side of the insulator cracked/fractured either as the bolt was tightened or loosened. 

Testing FEBIAD anode end cap as per dwg ITD0304 REV C

Target with TUBE ONLY. Do not use target heater.

Tuesday, June 26, 2012, 18:03: Roughing

Tuesday, June 26, 2012, 18:24: Turbos started

Tuesday, June 26, 2012, 18:31 : Turbos at speed. Vacuum at 1.8E-5

Wednesday, June 27, 2012, 08:48: Cooling opened. Vacuum stable at 4.2E-7. Ready for testing.

Same target as in e-log entry https://elog.triumf.ca/TIS/Test-Stand/106

Thursday, April 25, 2013, 13:54: Roughing

Thursday, April 25, 2013, 14:25: Started turbos 

Thursday, April 25, 2013, 14:33: Turbos at speed

Thursday, April 25, 2013, 14:33: Vacuum at 8.8E-6 T

Friday, April 26, 2013, 08:25: Cooling water supply opened. Vacuum stable at 2.2E-7 T

Friday, April 26, 2013, 13:35: Gas lines evacuated.

Testing Coil current vs Temperature before heating

COIL:RDCUR at 1.95A
COIL:RDVOL at 1.47V
COIL T/C at 86 deg C and still slowly increasing

Tuesday, April 30, 2013

Testing Coil current vs Temperature before heating

COIL:RDCUR at 3.96A

COIL:RDVOL 3.2 V Vacuum starts to increase (base 1.4E-7

COIL:RDVOL 3.8 V T/C at 150 C vacuum at 5E-7

COIL:RDCUR at 3.47A to reduce out-gassing T/C at 175 C

Tuesday, April 30, 2013, 12:39

COIL:RDCUR at 3.96A T/C 225 C

COIL:RDVOL 5.0 V T/C at 250 C vacuum at 6.2E-7

Tuesday, April 30, 2013, 13:00

COIL:RDCUR at 4.25A COIL:RDVOL at 5.7V T/C 290 C

Tuesday, April 30, 2013, 13:10

COIL:RDCUR at 4.15A COIL:RDVOL at 5.75V T/C 310 C

Tuesday, April 30, 2013, 14:53

COIL:RDCUR at 4.15A COIL:RDVOL at 5.85V T/C 320 C

Tuesday, April 30, 2013, 16:30

COIL:RDCUR at 4.15A COIL:RDVOL at 5.89V T/C 328 C

Wednesday, May 01, 2013, 08:16

COIL:RDCUR at 4.15A COIL:RDVOL at 5.95V T/C 350 C - P/S is voltage limited at 5.95V

Ramping down current to 0. T/C logger is required elsewhere.

Friday, May 03, 2013, 12:07: Pumping out gas line through vacuum chamber.

The anode cable has been reconnected (see e-log entry 297)

Friday, May 03, 2013, 14:17: BIAS and EE to 30kV and -800V

Friday, May 03, 2013, 14:24: Started heating TBHT to 280A at 1A/min

Monday, May 06, 2013, 08:46: TBHT @ 276A, Voltage limiting at 2.5V. Increased limit to 2.7V. TGHT to 280A and 2.52V. COIL temp ~100C

Monday, May 06, 2013, 09:48: COIL:RDCUR at 2.93A

Monday, May 06, 2013, 10:34: Coil temp ~240C. Increasing COIL:RDCUR to 3.52A COIL:RDVOL at 4.1V

Monday, May 06, 2013, 11:48: Coil temp 330C COIL:RDCUR at 3.52A RDVOL at 4.9V

Monday, May 06, 2013, 11:54: COIL:RDCUR at 3.9A

Monday, May 06, 2013, 12:56: RDVOL at 5.9V. Coil temp ~380C

Monday, May 06, 2013, 13:47: Cooling down target to correct anode connection.

Tuesday, May 07, 2013, 08:47: De-biased

Tuesday, May 07, 2013, 10:06: Corrected el. connections to cathode floating. Started tube heating to 280A

Wednesday, May 08, 2013, 12:12: De-biased

Wednesday, May 08, 2013, 12:12: Cooling down cathode 1A/min

Thursday, May 09, 2013, 15:22: TPS:IV4 closed

 Power supply did not work after high voltage conditioning. On Friday May 1st John Chow replaced the power supply with a 12 V 100 A power supply temporary while the other supply is being repaired. EPICS controls have not been adjusted.

Sam G. & Navid N.

Work Permit# C2022-11-23--1

Wednesday, November 23, 2022, 13:51 FS#5 on (HS bypassed with a water loop)

Wednesday, November 23, 2022, 13:55: TSG:IG1 Bypass on

Wednesday, November 23, 2022, 14:03: Signage up. Main breaker on.

Wednesday, November 23, 2022, 14:07: FS#5 off & purged. Not needed.

 Wednesday, November 23, 2022, 15:01: measured magnetic field of coil at 8A

end test

 Monday, November 28, 2022, 11:45: start test set up the hall probe with the jig to move it on the table and centered the hall probe in the magnet. signage up Main breaker on

Monday, November 28, 2022, 13:17: start collecting data at 8 amps

Monday, November 28, 2022, 16:11: end test

 Tuesday, November 29, 2022, 10:50:Signage up Main Breaker on Testing started; with current of 8 amps

Taking measurements of temperature at 8A 9A and 10A

Tuesday, November 29, 2022, 15:25 : system locked out and took out magnet

end test

Wednesday, November 30, 2022, 12:40: Test started. Breaker on. signage up. put in low profile magnet with wire ties to keep coils together.

taking data with 8A of current

Wednesday, November 30, 2022, 16:25: end of test power supply off breaker off

Friday, July 19, 2013, 14:14 : Stopping Turbos. Vacuum at 1.3E-7 T 

Friday, July 19, 2013, 15:14:  Venting

Friday, July 19, 2013, 16:22: Target installed. Roughing.

Friday, July 19, 2013, 16:41: Starting turbos

Friday, July 19, 2013, 16:49: Turbos at speed

Friday, July 19, 2013, 16:51 : Vacuum at 1.4E-5 T

Monday, July 22, 2013, 08:19: Opened up water flow. Vacuum stable at 1.3E-7 T after some minor bumps to 1.6E-7 T

Monday, July 22, 2013, 13:34: T/C logger installed on 9-pins 4 & 5. Ray is working in the HV cage to install a different PS for the magnet coil.

Monday, July 22, 2013, 14: Increasing Coil current manually. Vacuum starts to creep up at 3A (T/C around 85 deg C).

Monday, July 22, 2013, 16:37: Current at 4A. Voltage at 6.5V. T/C around 400 deg C.

Tuesday, July 23, 2013, 08:50: Coil conditioned to ~500 deg C at about 4.7A

Tuesday, July 23, 2013, 08:54: Evacuating gas line through the chamber.

Tuesday, July 23, 2013, 09:01: Gas lines evacuated.

Tuesday, July 23, 2013, 09:10: Coil current to zero.

Tuesday, July 23, 2013, 09:22: Target. biased

Tuesday, July 23, 2013, 09:22: Opened IV4

Tuesday, July 23, 2013, 09:32: ANODE to 200V. Helium leak to 6.0

Tuesday, July 23, 2013, 09:35: Coil temp at 220 deg C.

Tuesday, July 23, 2013, 10:58: Heating aborted at 200A. Will resume later.

Tuesday, July 23, 2013, 12:01: Restarted heating to 250A.

Tuesday, July 23, 2013, 13:11: Spark too out some optics. Restarted.

Tuesday, July 23, 2013, 14:39: COIL 130 deg C. TBHT at 280A read back.

Tuesday, July 23, 2013, 14:44: Sparking occurs across the spark gap on top of the test stand.

Tuesday, July 23, 2013, 16:14: Lowered TBHT to 270 read back. Will leave it like this over night.

Friday, July 26, 2013, 10:09: Cooling down TBHT.

Friday, July 26, 2013, 11:13: ANODE and COIL OFF. Closed IV4. Closed gas supply.

Friday, July 26, 2013, 12:41: BIAS, EE and EL to zero.

Data on Docushare:

https://documents.triumf.ca/docushare/dsweb/View/Collection-11041

Tuesday, August 20, 2013, 08:13: Roughing gas lines

Tuesday, August 20, 2013, 08:22: Gas lines roughed. Valve closed

Anders Mjos wrote:

The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.   Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

 The Test Stand has been  configured for Cathode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4563 REV 5.

As per ISK4562 Rev 3 and ISK4563 Rev 3

By Ray D. and co.

See attached file for photos of the broken tube 

 The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.

Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

Unable to hold Anode voltage after power supply change out.

Tuesday, October 10, 2017, 14:55: The Test Stand has been configured for Anode bias and the electrical connections have been wired according to ISK4523D REV 6.

At this current point in time John Chow has removed the power supply (PS). Will update once polarity is switched (if required) and is re-installed to the test stand.

Wednesday, October 11, 2017, 10:25: Polarity was switched  and PS is installed on the test stand. Sources/power switched on.

The read back of the ANODE current was confirmed to be working today with help of Ray D. using a 1kOhm resistor. There is an offset in the read back which can explain why no current was seen on SiC#30. The resistor between CATHODE and GND was changed from 100 kOhm to 50kOhm.