Thursday, August 29, 2019, 14:47 : Changing back to the nominal wiring 

Thursday, August 29, 2019, 17:01: TIS changed to Ferran's heat shield. 

Thursday, August 29, 2019, 17:02: 9-pin FT redone.

Friday, August 30, 2019, 00:28: Turbos on 

Friday, August 30, 2019, 00:36: IG1 on. 

Tuesday, September 03, 2019, 09:09: RGA on. Vacuum stable @ 2.1e-6T 

Tuesday, September 03, 2019, 15:00. Wire redone. Crosschecked by Arthur Leung. 

Tuesday, September 03, 2019, 15:16: Turbos tripped. TSG:CG1A above 50 mTorr 

Wednesday, September 04, 2019, 09:34 : Turbos on.  After the bakeout it will be better to have TSG:CG1A checked.

Wednesday, September 04, 2019, 09:43: IG1 on 

Wednesday, September 04, 2019, 09:45: RGA on 

Wednesday, September 04, 2019, 12:42 : Waterlines opened. No response on RGA. Vaccum stable @ 3.1e-6 T

Wednesday, September 04, 2019, 14:53 : Auto-ramping TGHT / TBHT to 100/ 100 A @ 4 A/min.

Wednesday, September 04, 2019, 16:04:  Auto-ramping TGHT / TBHT to 250/ 250 A @ 4 A/min.

Wednesday, September 04, 2019, 17:33: Final auto-ramping of the day TGHT / TBHT to 290/ 290 A @ 4 A/min. Vacuum stable@2.7e-7T

NB: Ferran's HS doesn't have an extraction electrode. Since the purpose of the heating is to "baked-out" the system, this is actually great as the shine will go downstream the beamline.

Thursday, September 05, 2019, 08:05:  Auto-ramping TGHT  to 580 A @ 2 A/min. Vacuum stable @2.97e-7T

Thursday, September 05, 2019, 09:30: TGHT PS is voltage-limited @440A and 5.2V. Stopping auto-ramping to increase the voltage limit to 7.7 (from previous screenshots).

Thursday, September 05, 2019, 09:31: Auto-ramping TGHT to 580A @ 2A/min.

Wednesday, May 15, 2019, 08:58: Optics/ HV on.

Monday, September 09, 2019, 16:05: Optics set. IV4 open.

Monday, September 09, 2019, 17:26: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Twenty minutes w/o sparks

Monday, September 09, 2019, 17:52 Optics/HV off

Tuesday, September 10, 2019, 10:05:  Auto-cooling 4A/min

Tuesday, September 10, 2019, 13:27: IV4 closed.

Tuesday, September 10, 2019, 13:27: IG1 off. RGA off

Tuesday, September 10, 2019, 13:28: Turbos off

Wednesday, September 11, 2019, 09:21: Venting.

Wednesday, September 11, 2019, 09:24 HS waterline purged

Wednesday, September 11, 2019, 10:54:  Cleaned the interior of chamber with methanol and Kim-wipes. Some dust and debris were removed with

Wednesday, September 11, 2019, 10:54 : Adding EE to the Assy.

Wednesday, September 11, 2019, 11:03: Roughing.

Wednesday, September 11, 2019, 11:35: Turbos on

Wednesday, September 11, 2019, 11:47: Turbos at  speed.

Wednesday, September 11, 2019, 11:48: IG1 on

Wednesday, September 11, 2019, 11:54: RGA on

Friday, September 13, 2019, 08:56: RGA off. IG1 off.

Friday, September 13, 2019, 08:56: Turbos off

Monday, September 16, 2019, 08:11: Venting

Monday, September 16, 2019, 09:58: Assembly removed.

 Monday, September 16, 2019, 10:03: The rightmost alignment pin has been reinstalled (see picture attached). It was previously removed for Ferran's test. 

Monday, October 28, 2019, 09:22: The local reader indicated 42 mTorr while EPICS showed 51mTorr.

CG1B showed 8.9mTorr while EPICS shows 14mTorr.

After reconnecting CG1A, EPICS shows 16mTorr. Anthony suggest replacing the gauge.

Wednesday, October 30, 2019, 14:49: John C. changed the polarity of the anode power supply to negative, and Fernando M. rewired the cabling on the service cap.

Thursday, October 31, 2019, 10:41: Cage removed. Tape put on the limit switches. Anode interlock bypassed.

Thursday, October 31, 2019, 10:42: Measuring voltage between F/T B and cable tray.

Thursday, October 31, 2019, 10:42: Readings match EPICS readback, i.e, 4 V readsback 3.7V and multimeter shows -3.816V

Thursday, October 31, 2019, 10:44: Probing from F/T B to J reads 0 V as expected. Anode is on common

Thursday, October 31, 2019, 10:45: Probing from F/T B to other F/T show 0V.

Thursday, October 31, 2019, 11:37: Current draw from the power supply matches the on neede for the 50 kOhm resistor.

Thursday, October 31, 2019, 13:20: After inspecting the interior, the 9 pin bracket was found not making full contact with the  baseplate (pic attached).

After pushing it and re doing the bolts conctact works.

Friday, November 01, 2019, 15:47: A symbiotic  peek seal assembly  was installed on the manipulator grip to verify the temperature at high voltage and high current.

Friday, November 01, 2019, 15:48: Three  thermocouples added for temperature readings.

Friday, November 01, 2019, 15:47: Roughing

Friday, November 01, 2019, 16:19: Turbos on.

Friday, November 01, 2019, 16:27: IG1 on.

Friday, November 01, 2019, 16:29: RGA on.

AS

Monday, November 04, 2019, 07:41: Waterlines opened. No response on RGA. Vacuum ok @ 3.97e-07T.

Monday, November 04, 2019, 07:44: Power / sources on.

Monday, November 04, 2019, 07:47: Auto-ramping TGHT to 300 A @ 2 A per min.

Monday, November 04, 2019, 10:57: Auto-ramping TGHT to 400 A @ 2 A per min.

FM

Monday, November 04, 2019, 12:11: Auto-ramping TGHT to 500 A @ 2 A per min.

Monday, November 04, 2019, 13:35: Auto-ramping TGHT to 600 A @ 2 A per min.

Monday, November 04, 2019, 14:48: Bias/EE/EZL @ 30/1.5/13 kV.

Monday, November 04, 2019, 15:03: Bias/EE/EZL @ 40/2.0/17 kV.

Monday, November 04, 2019, 15:04: Sparks observed after reaching 40 kV. TMS:TP6 down. Back down to 32 kV.

Monday, November 04, 2019, 15:04:  Bias to 40 kV. One spark only. Seems stable now.

Sparks occurred sparsely. Max time without a spark was 26 minutes.

Monday, November 04, 2019, 16:09: Bias/EE/EZL @ 30/1.5/13 kV.

Monday, November 04, 2019, 16:16: RGA restart.

AS

Tuesday, November 05, 2019, 08:30: RGA Restarted.

Tuesday, November 05, 2019, 08:32: Begin bringing up HV to 35 kV on BIAS.

Tuesday, November 05, 2019, 08:35: BIAS / EE / EZL @ 35 / 1.8 / 15 kV.

Tuesday, November 05, 2019, 08:55: No sparks after 20 minutes. Move up to 40 kV.

Tuesday, November 05, 2019, 08:59: BIAS / EE / EZL @ 40 / 2.0 / 20 kV.

Tuesday, November 05, 2019, 09:34: Audible Spark*. Restart TSG: CB1, VCB1, CBCx2. Reset & restart turbo pump. TMS:TP6. Appears on EZl cur.

Tuesday, November 05, 2019, 09:37: RGA off. Leave it off.

Tuesday, November 05, 2019, 09:38: Audible Spark* but not loud at all. Restart TSG: CB1, VCB1, CBCx2. Reset & restart turbo pump. TMS:TP6.

Tuesday, November 05, 2019, 10:00: BIAS / EE / EZL @ 35 / 1.8 / 17.5 kV.

Tuesday, November 05, 2019, 10:06: BIAS / EE / EZL @ 0 / 0 / 0 kV.

Tuesday, November 05, 2019, 10:07: Auto-cooling TGHT to 500 A @ 4 A per min.

Wednesday, November 13, 2019, 07:29: Turbo pumps & ion gauge off. RGA was already off.

Friday, November 15, 2019, 08:43: Venting.

Wednesday, November 27, 2019, 15:31: During HV tests, bias was around 55kV when a spark occur and almost immediately the controller for TP6 made a noticeable noise and smoke started to come out of it.

Control room notified about the smoke.

Both turbo and IG6 were not affected.

Eddie was contacted for assessment, and a new controller (from OATIS)  was installed and tested. Turbo turned on without any issue.

Wednesday, November 27, 2019, 16:00: Resuming HV tests

Friday: Test to validate Ferran's assembly. The plan is to ramp up to operating current, apply high voltage, and possibly extract beam.

Turbos on. IG1. Power on.

Monday, December 02, 2019, 15:59: Auto-ramp to 230/600 A for TBHT/TGHT @ 2A/min and 4A/min  (0.5A/15 s 1 A/15s.)

Tuesday, December 03, 2019, 15:30: Sources on.

Tuesday, December 03, 2019, 15:41: Bias/EZL/EE @ 30/13/1.5 kV

 Bias/EE/EZL to 40/2.0/17 kV.

Bias/EE/EZL to 50/2.5/22 kV.

Bias/EE/EZL to 50/2.6/22.5 kV.

Spark. Inaudible

Tuesday, December 03, 2019, 17:26: Bias/EZL/EE to 0kV.

Tuesday, December 03, 2019, 17:26: Auto-cooling  @ 2A/min

Wednesday, December 04, 2019, 09:37: Power/sources off

Wednesday, March 04, 2020, 17:13: EPICS page indicated a sucesful scan but data was empty.

Wednesday, March 04, 2020, 17:13: Power suppply didn't respond to the voltage sweep

Wednesday, March 04, 2020, 17:14: Problem most likely similar to elog entry 531.

Wednesday, March 04, 2020, 17:14: Keiko contacted for a soft reboot.

Wednesday, March 04, 2020, 17:14: Emittance power supply now  responds.

 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.

 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. 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.

Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage.

The changes performed were as follows:

• Remove He gas tank (to make room for new tank)
• Remove calibrated leak to connect new gas line
• Remove convectron gauge to install a high range dial manometer.

The tests were done manually and consisted as follows:

• Gas lines roughed by opening SV1.
• Tank regulator set to deliver 1 bar
• SV4 opened to allow the gas to enter the lines
• Dial manometer verified to  match the pressure set by the regulator
• Alternatively roughed and pressurized the lines by opening/closing SV1/SV4
• Tank lines emptied with SV1 and SV4 open simultaneously.

The test involve the lines up to SV5. The gas line portion from SV5 to the top of the HV cage was not included as it was removed for TM3 HV tests (se entry #822)

When the HV tests are concluded I will install a new line that will include a gauge.

Fernando Maldonado wrote:

Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage. The changes performed were as follows: Remove He gas tank (to make room for new tank) Remove calibrated leak to connect new gas line Remove convectron gauge to install a high range dial manometer.   The tests were done manually and consisted as follows: Gas lines roughed by opening SV1. Tank regulator set to deliver 1 bar SV4 opened to allow the gas to enter the lines Dial manometer verified to  match the pressure set by the regulator Alternatively roughed and pressurized the lines by opening/closing SV1/SV4 Tank lines emptied with SV1 and SV4 open simultaneously.   The test involve the lines up to SV5. The gas line portion from SV5 to the top of the HV cage was not included as it was removed for TM3 HV tests (se entry #822) When the HV tests are concluded I will install a new line that will include a gauge.

 Yesterday, January 13th I added back the gas line from SV5 to the service cap.

I temporarily added a gauge in between to measure the gas pressure. After successful tests I removed it from this location.

Finally, I added the gauge on the service cap, which its desired location (see attached picture). The tests corroborate no pressure losses from the gas bottle up to this location.

Fernando Maldonado wrote:

Wednesday, October 30, 2019, 14:49: John C. changed the polarity of the anode power supply to negative, and Fernando M. rewired the cabling on the service cap.

 Wednesday, January 20, 2021, 11:26: John Chow verified that the power supply was in negative mode.

Just as side note, I think the PS was in negative mode since the quoted entry from October 30 2019. Given that the SiC/FEBIAD was supposed to run in cathode mode, the test stand was rewired to this. The only rewiring after this was for the P2N.

 Thursday, January 21, 2021, 10:05: Anodeless Negative Bias On Surface Ion  Source, or ANBOSIS (still working on the acronym). installed to test energy spread vs position.

The SIS allow a more forgiving operation while calibrating such that other sources can have these type of measurements.

 Thursday, January 21, 2021, 10:43: Electrical connection make sense inside the source tray both with and without TIS. Anode confirmed to be on HV common through 9-pin.

Thursday, January 21, 2021, 10:46: Roughing.

Thursday, January 21, 2021, 11:17: Turbos on. 

Thursday, January 21, 2021, 11:25: IG1 on. 

 Thursday, January 21, 2021, 12:52: IG1@2.67e-5 T

AS

Friday, January 22, 2021, 07:04: Vacuum @ 4.57e-06T.

Friday, January 22, 2021, 07:07: FS#2 open. Vacuum ok @ 4.57e-06T

Friday, January 22, 2021, 07:13: FS#3 Open. Vacuum ok @ 4.57e-06T

Friday, January 22, 2021, 07:24: FS#4 Open. Vacuum ok @ 4.48e-06T

Friday, January 22, 2021, 07:30: FS#5 Open. Vacuum ok @ 4.48e-06T

Friday, January 22, 2021, 07:39: Reboot IOC (Optics page has a white out)

Friday, January 22, 2021, 07:44: Power / Sources on.

Friday, January 22, 2021, 07:49: Reboot PLC / IOC again. Surface source page ok. Optics page still in white out.

Friday, January 22, 2021, 07:52: Controls to TGHT / TBHT non-responsive. 10 / 5 A on TGHT / TBHT @ 0 / 0 A on epics & the PS.

Friday, January 22, 2021, 08:15: Tested HV. OK on both EZL & BIAS w/ 500 V each, then back to 0 V. TGHT / TBHT still not responding.

AS

Friday, January 29, 2021, 09:52: TS checks ok. Fixed. TGHT /  TBHT @ 10 A each. BIAS / EE / EZL @ 500 / -200 / 300 V to check.

 https://elog.triumf.ca/TIS/Test-Stand/842

Friday, January 29, 2021, 09:53: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2 A per min.

Friday, January 29, 2021, 10:05: BIAS / EE / EZL @ 30 /-1.5/13 kV.

Friday, January 29, 2021, 10:08: Lot's of sparking*** Reduce BIAS / EE / EZL to 20 / -1.5 / 10 kV.

 FM

Friday, January 29, 2021, 11:24: BIAS / EE / EZL @ 29 /-1.5/13 kV.. No Sparks. Ramping up to 30 kV in steps of 100V.

Friday, January 29, 2021, 11:28: Reached 30kV on bias. No sparks after 2 minutes. Previously, the sparks happened within seconds after reaching 30 kV, according to the striptool.

Friday, January 29, 2021, 11:41: There were  five inaudible sparks. They are likely occurring inside as the target-ion source is being heated. Small rise in vacuum occurred and then the spark started.

Friday, January 29, 2021, 11:42: BIAS / EE / EZL to 0.000 kV to allow outgassing

Friday, January 29, 2021, 12:44  Auto-ramping TGHT / TBHT to 500 / 200 A @ 4 A per min.

Friday, January 29, 2021, 13:32: TGHT/TBHT @500/200 A.

Friday, January 29, 2021, 13:44. Spark on top.

Friday, January 29, 2021, 13:48 : BIAS / EE / EZL @ 30 /-1.5/13 kV.

Friday, January 29, 2021, 13:49: Anode gets current limited even at 1 V.  Could this indicate a short, or that the anode is floating?

Friday, January 29, 2021, 13:53: Spark across extraction electrode spark gap.

Friday, January 29, 2021, 14:13: Auto-ramping TBHT to 225 A @ 3 A per min.

Friday, January 29, 2021, 14:32: 10 min ago, the IG6 timed out. Nothing tripped but the epics couldn't restarted. Manually turned Fil1 on controller but didn't work. Fil2 did the trick. Back to normal.

Friday, January 29, 2021, 14:42: Spark gap again. It turned the separator section yellow (except MB1)"

Friday, January 29, 2021, 15:08: Auto-ramping TGHT to 580 A @ 2 A per min. Good vac level set to 3.5e-7T

Friday, January 29, 2021, 15:17: Inaudible spark. First spark after 25 min.

Friday, January 29, 2021, 15:30: Playing with TBHT current. Couple of sparks when playing with the steerers and einzel lens. TGHT auto-ramp waiting for good vacuum.

Friday, January 29, 2021, 16:25: Vacuum reached bad vaccum level. Currentes were step back. No sparks for around 40 minutes.

Friday, January 29, 2021, 16:41: System seems to be dirty. It will likely take the weekend to reach nominal vacuum levels.

I will reduce the HV and keep the heaters on. I will keep an eye during the weekend.

Friday, January 29, 2021, 16:44: 50 minutes without sparks

Friday, January 29, 2021, 16:46:  BIAS / EE / EZL to 0.000 kV to allow outgassing during the weekend.

Saturday, January 30, 2021, 11:59: Vacuum has steadily decrease over time allowing the auto ramp-up routine to make progress.

Saturday, January 30, 2021, 12:00 IG1 @ 3.58e-6T . TGHT/TBHT @  566/230 A. All voltage still at 0 V.

Saturday, January 30, 2021, 12:56: TGHT/TBHT @ 580/230 A. 

Sunday, January 31, 2021, 09:32: TGHT/TBHT @ 580/230 A. IG1@2.59e-6T. 

Sunday, January 31, 2021, 10:48:  BIAS / EE / EZL @ 30 /-1.5/13 kV. No sparks on the way up. Beam is now noticeable on the wire scanners, When I first tried with colder target current no beam.

Sunday, January 31, 2021, 13:31: After around 3 hours, only two sparks have occurred.

Sunday, January 31, 2021, 13:54: Spark. All of them seem to be going to EZL. 

Sunday, January 31, 2021, 15:13: Spark. Separators optics turned yellow. 

Sunday, January 31, 2021, 15:38: Spark. 

Sunday, January 31, 2021, 16:11: Things were looking good so i  decided t o try  a mass scan , however a series of sparks started. I set all biases to 0 and stop the tests for today.

On Tuesday the hard good vacuum level was changed from 7e-6 T to 1e-5 T to allow larger leak rates when testing FEBIAD.

Also this new level should allow faster heating rates (be mindful and cautious)

Work done as per WP C2021-01-19-9

Monday, February 01, 2021, 08:38 : The anode seems to be shorted but we can still test the  amount of dispersion at the image position, and correlate with energy spread.

Monday, February 01, 2021, 11:27: Bias/EZL/EE @ 30/0/1.5 kV. 

 Monday, February 01, 2021, 11:44: Mass scan in progress. The peaks appear to be shifted. Large peak at  m/q160 and double peak at m/q 100u, where I think it should be 133Cs and 85Rb and 87Rb.

Monday, February 01, 2021, 14:04: HV turned itself off, nothing tripped nor change. Not sure if related to the emittance scan that I was running. Setting it to zero before restarting it.

Monday, February 01, 2021, 20:14: Ramping things down and call it a day. My laptop charger broke and I don't want to leave the HV on.

Wire scanners look fine but the emittance meter was not working. Keiko soft reboot it but to luck. 

AS

Tuesday, February 02, 2021, 08:51: E-rig re-calibrated. Mass scans taken. It appears we have evaporated all the salts. Turning off the HV & auto-cooling @ 3A per min.

Tuesday, February 02, 2021, 12:18: IV4 closed, power/sources off. Turbo pumps off.

Tuesday, February 02, 2021, 12:50: Venting.

Remove, add salts, EE ok.

Tuesday, February 02, 2021, 13:58: Rouging.

Tuesday, February 02, 2021, 14:26: Turbo pump on - TP1B.

Tuesday, February 02, 2021, 14:37: Turbo pump on - TP1A. Ion gauge on.

AS

Wednesday, February 03, 2021, 07:36: Vacuum ok @ 1.01e-06 T.

Wednesday, February 03, 2021, 07:38: Opened FS#5. Vacuum ok.

Wednesday, February 03, 2021, 07:41; Power / Sources on. Optics on.

Wednesday, February 03, 2021, 07:43: Auto-ramping TGHT / TBHT to 350 / 150 A @ 4 A per min.

Wednesday, February 03, 2021, 07:46: IV4 open

Wednesday, February 03, 2021, 07:48: BIAS / EE / EZL @ 20 / -1.0 / 0 kV to start. will go to 30 & 1.5 kV once the TGHT reaches 350 A.

Wednesday, February 03, 2021, 09:40: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Wednesday, February 03, 2021, 10:55: BIAS / EE / EZL @ 30 / -1.5 / 0 kV. Lot's of sparks on the initial conditioning from 8:30am until almost 10:20. Appears stable now.

 FM

Wednesday, February 03, 2021, 13:01: Spark. The HV bias voltage remained at 10 kV for several seconds. TSG:CBC was @ 2500 V. Likely, a sustained discharge towards the steerer had the HV bias power supply to get current limited

 Wednesday, February 03, 2021, 13:25: HV bias power supply gets current limited as of 15 kV. Setpoints to 0 to allow some discharge. Didn't work. Asking someone on site to have a look on the PS.

No sign whatsoever of a spark  to any device.

Wednesday, February 03, 2021, 18:27: HV has been erratic all day. Waiting for some stabilization allowed the system to reach ~24 kV. Now it has dropped to 20 kV.

Wednesday, February 03, 2021, 18:28: Increasing current limit on the bias PS from 0.015 to 0.02 mA

Wednesday, February 03, 2021, 18:55: Spark in the water lines. Current drop 60% from 0.03 to 0.01 uA. Spark observed in the GND electrode water lines

Wednesday, February 03, 2021, 19:11: Able to reach 28 kV but a spark ocurred.  TSG:CBC adn TSG:Q1 readback 2500 and 1500 V (similarly to the spark at 1 pm). Bias is current limited again, even at the new current limit.

• I think there might a short with one of the steerers cables, or a bit unlikely, to the quad.
• Slow charge up process, that does not discharges.

Wednesday, February 03, 2021, 19:32: Bias/EZL/EE @ 0.000 kV

Wednesday, February 03, 2021, 22:59: Tapped down TGHT/TBHT to 500/200 A to preserve the salts.

AS

Thursday, February 04, 2021, 06:42: Auto-cooling TGHT / TBHT down to 300 / 150 A. 

Thursday, February 04, 2021, 09:14: Optics set to standard settings. Checking BIAS w/ EE & EZL 

Thursday, February 04, 2021, 09:21: BIAS / EE / EZL to 16.5 / -1.0 / 10 kV. Actual on BIAS 14.5 to 15 kV on BIAS:RDVOL & w/ 0.029 mA on BIAS:RDCUR.

Thursday, February 04, 2021, 09:24: BIAS discharge. 16.5 kV on BIAS:RDVOL & w/ 0.004 mA on BIAS:RDCUR.

Thursday, February 04, 2021, 09:32: Brought BIAS up to 19 kV, but then it sparks and dropped to 13.5 kV on BIAS:RDVOL & w/ 0.029 mA on BIAS:RDCUR. Brought the BIAS down to 13 kV, & the current dropped out, then stabilized. Brought it back up to 16.5 kV. Holding 16.5 kV on BIAS:RDVOL & w/ 0.004 mA on BIAS:RDCUR.

Thursday, February 04, 2021, 09:36: BIAS / EE / EZL to 16.5 / -1.0 / 10 kV

Thursday, February 04, 2021, 09:39: Auto-cooling TGHT / TBHT down to 0 A. 

Thursday, February 04, 2021, 09:40: 17 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.

Thursday, February 04, 2021, 09:45: 17.5 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.

Thursday, February 04, 2021, 09:51: 18 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.

Thursday, February 04, 2021, 09:55: 18.5 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.

Thursday, February 04, 2021, 10:00: 19 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.

Thursday, February 04, 2021, 10:14: 19.5 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR. 

Thursday, February 04, 2021, 10:20: 20 kV - BIAS:RDVOL / 0.005 mA - BIAS:RDCUR.  

FM

Thursday, February 04, 2021, 12:54:  20.5 kV / 0.006 mA 

Thursday, February 04, 2021, 12:58: 21 kV / 0.005 mA

Thursday, February 04, 2021, 13:02: 21.5kV / 0.006 mA 

Thursday, February 04, 2021, 13:08: 22 kV / 0.005 mA. 

Thursday, February 04, 2021, 13:12: 22.5 kV / 0.006 mA. 

Thursday, February 04, 2021, 13:58: 30 kV / 0.008 mA.

Thursday, February 04, 2021, 14:04: Spark. Bias is current limited.

Thursday, February 04, 2021, 14:39 : Small bright spot at the TGHT or HS cooling lines from the solder of the GND water lines.

Without voltage this is not noticeable. Likely a corona discharge happening at this location and hence limiting the current.

Opening to create clearance. Also to troubleshot the cathode power supply.

Thursday, February 04, 2021, 16:07: Turbos off.

The system was vented to  make clearance on the waterlines as a very small continuous discharge was observed.

The inspection revealed some marks on the HS water line (sideview photo). From the the bottom and from real close (zoom and backview photo) the marks are quite noticeable with shinny copper in the middle and dark circles around.

The GND line is routed in such a way that sits on top of the ion gauge chamber (gnd-ig1) this could explain why the vacuum had small oscillation during the current limited events.

Moreover, the GND line has the steerer cables tied to it, this could explain why one of the steerers got affected after the sparks.

Also, the GND line is in contact with a dark grime that goes all the way into the first skimmer (gnd-quad). I think the grime observed inside the test stand might have become conductive, or if this is trace from a previous flashover, this  is good path to flash again.

The EE and the plasma electrode were removed and they show signs of buildup. Cleaned and reinstalled