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.

 Monday, July 26, 2021, 17:23: Roughing

Monday, July 26, 2021, 17:55: Turbos on.

Monday, July 26, 2021, 18:03 : TP1A timed out ...again

Monday, July 26, 2021, 18:03: Bypassing BV1A. TP1A reset and on. turbos at speed.

 Monday, July 26, 2021, 18:05: IG1 on.

Monday, July 26, 2021, 18:26: IG1 @ 1.97e-5 T. 

Monday, July 26, 2021, 22:33: IG1 @ 2.41e-6 T

Monday, July 26, 2021, 22:33: IV4 open. 

Monday, July 26, 2021, 22:55: BIAS/EZL/EE to 10/6/1 kV. No problem. All set to 0.000 kV again 

Monday, July 26, 2021, 22:57: Coil to 10 A. Anode to 100 V.. No problem. All set to 0 again.

 Monday, July 26, 2021, 22:59: Auto-ramping TGHT/TBHT to 580/280 A @ 2A/min.

Tuesday, July 27, 2021, 06:32: IG1 @ 1.52e-6 T.

At 01:30, approximately 10 minutes after TBHT heater reached the desired current, the anode went from 0 to 1.5 V.

Tried to put anode voltage to 100 V but it got current limited as of 2 V.

Given that before heating the anode voltage was fine, I think the gas tube move again and made contact with the heatshield.

I will need to open this again :(

 Tuesday, July 27, 2021, 06:41: Auto-cooling TGHT/TBHT to 0 A @ -4A/min

Tuesday, July 27, 2021, 09:08: Heaters @ 0 A. Anode still gets current limited.

Tuesday, July 27, 2021, 09:09: IV4 close. Timed out. 

 Tuesday, July 27, 2021, 09:09: IG1 off.

Tuesday, July 27, 2021, 09:09: Turbos off. 

Tuesday, July 27, 2021, 11:13: Venting.

Tuesday, July 27, 2021, 11:58: Gas tube move and end up touching the  heatshield again. When try to adjust it to add an insulator as an spacer, the gas line de-coupled from the target.

removing the target for re-installation and clearance addition.

 Replace Ta capillary going into the target with the one from previous febiad as it felt sturdy and had better shape for clearance with the HS.

Assembly has new gas tube to the target for better fit and clearance to the HS.

Electric checks before closing shows no short between TIS and HS.

Tuesday, July 27, 2021, 12:57: Venting

Tuesday, July 27, 2021, 13:28: Turbos on. 

TP1A timed out again! Bypassing BV1A to open it, then reset TP1A and turn  it on.  Turbo show that is at speed right away.

Tuesday, July 27, 2021, 13:38: IG1 on

Tuesday, July 27, 2021, 15:24: IG1 @ 7.07e-6.

Tuesday, July 27, 2021, 15:28: Waterlines open. No vacuum response.

Tuesday, July 27, 2021, 15:33. IV4. Timed out a couple of times.

Tuesday, July 27, 2021, 15:37: Power/Sources on.

 Tuesday, July 27, 2021, 17:57: IG1 @ 2.76e-6 T.

Tuesday, July 27, 2021, 18:04: Auto-ramping TGHT/TBHT to 560/280 A. @ 2A/min. 

Wednesday, July 28, 2021, 00:46: Found out that anode got current limited around 9 pm. I wonder if the tube got moved again

Wednesday, July 28, 2021, 00:48: Auto-cooling to 0 A to investigate. 

 Wednesday, July 28, 2021, 06:44: IV4 closed

Wednesday, July 28, 2021, 06:44: IG1 off. Turbos off. 

Wednesday, July 28, 2021, 08:01: Venting.

 Once more, the tube was touching the heatshield in the same way as before.

• The cause is likely the spiral line coming from the VCR as in "rest" state in pointing towards the grip handles.
• I was trying to put an insulator piece and I noticed (and recall) how much force I had to put in order to accommodate the spiral  line in order to align it with the target capillary.
• This lead me to think that when the targets gets hot and the capillary deforms, this will be pushed towards the HS.
• To fixed it, I modified the spiral to have less torque or at least make it push to the other side (touching the tbht is no problem).

Closing everything and pumping down.

Modified spiral tube from VCR to counteract torque towards the HS. Now points towards TBHT.

Electric checks before closing shows no short between TIS and HS.

Wednesday, July 28, 2021, 08:48: Venting

Wednesday, July 28, 2021, 09:18 Turbos on. 

Wednesday, July 28, 2021, 09:26: IG1 on. TP1 didn't timed out.

Wednesday, July 28, 2021, 10:24: IG1 @ 4.13e-6 T. All voltages can be set with no problem.

Wednesday, July 28, 2021, 11:48: IG1 @ 1.98e-6 T. Anode @ 10 V.

Wednesday, July 28, 2021, 11:49: Auto-ramping TGHT/TBHT to 560/280 A @ 4A/min. 

Wednesday, July 28, 2021, 14:10: Heaters reached setpoints. No shorts!

Wednesday, July 28, 2021, 14:14: IG1 @  1.71e-6 T.

Wednesday, July 28, 2021, 14:30: Spark when ramping voltage @ 20 kV.

Wednesday, July 28, 2021, 14:30: IV4 open. 

Wednesday, July 28, 2021, 14:32: Bias/ EZL/EE @ 30/13/1.5 kV. Anode @ 0 V.

Wednesday, July 28, 2021, 14:33: FC0 = 1.09e-10 A 

 Wednesday, July 28, 2021, 14:34: IG1 @ 1.62e-6 T.

Wednesday, July 28, 2021, 14:35:  Auto-ramping TGHT to 580 A @ 4A/min. 

Wednesday, July 28, 2021, 14:48: IG1 @1 .60e-6 T 

Wednesday, July 28, 2021, 14:48: FC0 = 2.35e-10 

Ready to start systematic measurements.

 Wednesday, July 28, 2021, 15:00: Mass scan with anode = 0 V started.

Couple more mass scans, and parameter scans with a python notebook.

Wednesday, July 28, 2021, 20:37:   Auto-ramping TBHT to 285 A @ 2A/min. 

Thursday, July 29, 2021, 11:46: Manually tapping to 279 A as this provides a similar power to an older measurement. Even though the anode-cathode gap distance might be different, this is a preliminary measurement to make sure things look relatively similar. 

 Thursday, July 29, 2021, 21:38: Most of the day I was running parameter scans with similar parameter to an older measurement.

For this I varied TBHT and TGHT and some look closer than other, which indicates how much the sources varies from each other.

I tried running an emittance measurement but it seems the voltage is not been swept. I need to check if the power supply is working.

 Thursday, July 29, 2021, 21:38: TBHT to 270 A  @ -2A/min. TGHT @ 580 A

Friday, July 30, 2021, 09:57: Things stay fine overnight and only TPS:CBC was found off . The plan for today is the following:

• Check grid integrity
• Flush and refill gas line
• Start systematic measurements at low temperature.
  • Mass scan nominal values of coil and anode
  • Anode-coil scans
  • Mass scan interesting points
  • Emittance scan interesting points

 Friday, July 30, 2021, 11:43: Grid is fine. Voltages to 0 to  open cage.

Friday, July 30, 2021, 11:44:  Gas lines flushed and refilled with a pressure of |200| kPa. Similar to older measurements. It seems that yesterday measurements were with |240| kPa.

Friday, July 30, 2021, 11:51: Noticed that TP6 was red. Likely a consequence of a spark. Not sure since when. The vacuum seem ok before. 

Friday, July 30, 2021, 11:55: TP1A interlock due to vacuum on CG1A. When opening it the system pressure peak and trip the heaters :/. Waiting for the backing lines to evacuate before heating again.

 Friday, July 30, 2021, 14:39: TSG:CG1A&B are not coming down. Bypassing TSG:BV1A increase the pressure reading on IG1, indicating that the signal is real. The question is why there is such buildup in the backing lines.

Digging the archive this seems common but only after march 2021, the pressure does not decrease as good as before. This matches a big water leak. Maybe a new pump is needed as it was the case in August 2020.

Friday, July 30, 2021, 14:49: IG1 off. TP1B off. 

Friday, July 30, 2021, 16:05: Backing lines @ 0.025 T. An order of magnitude decrease after swapping RP1 (see elog 889).

Turbos on, IG1 On. Things look to be ok again. TP1A epics readback is 9.92 A at all times but controller reads 6 A upon start (normal) and at full speed reads 0.7 A (normal). To check with control group.

Friday, July 30, 2021, 16:14: IG1 @ 7.02e-7 T.

TP1A tripped off on Fernando, seems the backing pressure got too high. Even with PV1 closed the RP1 pump could not get below 200mTorr. Derek from vacuum group came and had a look, and is swapping RP1 out for one of the vacuum group pumps, then will see if they can repair ours.

Wednesday, March 29, 2023, 09:15: Roughing.

Wednesday, March 29, 2023, 12:22: TP1B on.

Wednesday, March 29, 2023, 12:40: TP1A on.

Wednesday, March 29, 2023, 13:03: IG1 on.

Thursday, March 30, 2023, 08:23: Vacuum @ 3.42e-07T.

Thursday, March 30, 2023, 08:24: Waterline FS#5 open. Vacuum ok.

Thursday, March 30, 2023, 08:31: Manual Checks:

TGHT / TBHT @ 5 / 5 A ok

BIAS / EE / EZL @ 1 / 0.5 / 1 kV ok.

Thursday, March 30, 2023, 08:32: Anode @ 100 V ok. Coil @ 10 A ok.

Thursday, March 30, 2023, 08:56: Auto-ramping TGHT / TBHT to 350 / 100 A @ 2 A per minute.

Thursday, March 30, 2023, 11:45: Abort heating. TGHT / TBHT @ 233 / 100 A.

Thursday, March 30, 2023, 13:53: Auto-cooling @ 2 A per min 

Thursday, April 13, 2023, 11:07: New TMS:RP2 roughing pump installed: Elog 961

Thursday, April 13, 2023, 12:06: Gas lines opened. Ar gas @ 50 kPa

Thursday, April 13, 2023, 13:34: IG1 @ 2.27e-07T / IG6 @ 6.46e-06T. Open IV4

Thursday, April 13, 2023, 13:35: IG1 @ 3.66e-07T / IG6 @ 6.31e-06T7.

Thursday, April 13, 2023, 13:39: IG1 @ 4.03e-07T / IG6 @ 6.24e-06T. Power / Sources on.

Thursday, April 13, 2023, 13:42: Optics still require vacuum below 5.01e-06T on IG6. Wait.

Friday, April 14, 2023, 06:30: Optics still not configuring on TMS:Q2,Q5 or TMS:CB1. Controls group notified. 

Friday, April 14, 2023, 06:42: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2A per minute.  

Friday, April 14, 2023, 11:26: Optics fixed / set. Continue ramping to 580 / 270 A @ 2A per minute.

Friday, April 14, 2023, 12:27: Halt & hold ramping. Vacuum @ 5.01e-06T. 

Friday, April 14, 2023, 13:54: Ramping continued. 

Friday, April 14, 2023, 14:57: Halt & hold ramping. Vacuum @ 5.01e-06T. 

Friday, April 14, 2023, 15:38: Ramping continued. 

Friday, April 14, 2023, 15:47: TGHT / TBHT @ 580 / 290 A.

BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Anode @ 100 V. Coil @ 10 A

Friday, April 14, 2023, 15:51: Anode @ 400 V. 

Friday, April 14, 2023, 15:52: Anode back to 300 V / 41 mA. . Limited around 350 V. Current limit 50 mA.

Friday, April 14, 2023, 15:55: Adjusted current limit. Anode @ 400 V / 72.039 mA.

Friday, April 14, 2023, 15:58: Adjust Anode current limit further. 300 mA. 

Friday, April 14, 2023, 16:06: Anode stable. Reduced current limit to 150 mA. Anode @ 400 A / 91.575 mA

Friday, April 14, 2023, 16:35: Spark* during mass scan. Current limited on the Anode. Reset optics as well.  

Friday, April 14, 2023, 16:41: Reduced Anode to 100 V /  30.525 mA. Current limit reduced to 100 mA. 

Friday, April 14, 2023, 19:45: Auto-Cooling @ 2 A per min. HV, Coil, & Anode to 0. 

Monday, April 17, 2023, 07:35: Coil manually tapped up to 80 A @ 8 A per min.

Monday, April 17, 2023, 08:39: IV4 closed. 

Monday, April 17, 2023, 08:44: Power ? Sources off.

Monday, April 17, 2023, 08:45: IG1 off. Turbos pump TP1B & TP1A off.

Monday, April 17, 2023, 13:24: Venting.

Monday, April 17, 2023, 13:26: Odd, the venting is going very slowly. "Aiding" the venting process.

Target oven was inspected post TS. Risks of cracking due to crystallization.

Tuesday, September 20, 2011:

Did another mass scan today at 5:40. Saved as: plotdump-local-clean.txt Sept 20 11 11-51-20.txt

Started target cool-down. Tomorrow the target would be ready to be removed from the Test Stand.

Wednesday, September 21, 2011:

Turned off the HV & optics.

Target is ready to be removed. Currently, it's under vacuum and the water is still on.

Today, did a did a mass scan: plotdump-local-clean.txt Sep30 11 12-20-08.txt

Optimized a bit the tune with Friedhelm, then started the Target Cooldown.

Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.

Aurelia Laxdal wrote:

Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.

 Monday, October 03, 2011, 13:45: Venting.

Anders Mjos wrote:

Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.

 Monday, October 03, 2011, 14:45

• Target was visually  inspected and found to be ready to go online.
• No burn marks found on the 9-pin connectors.
• Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

Anders Mjos wrote:

Anders Mjos wrote: Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.  Monday, October 03, 2011, 14:45 Target was visually  inspected and found to be ready to go online. No burn marks found on the 9-pin connectors. Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

 Wednesday, October 12, 2011, 13:15: Venting

Wednesday, October 12, 2011, 14:15: Target brought back to lab for inspection and final check.

Started both ISACT and SOURCES Archivers.

water cooling line valves opened. No response on vacuum TSG:IG1 3.5e-7 T

Thursday, May 17, 2012, 08:36: Turbo pumps switched off in preparation of target removal.

Thursday, May 17, 2012, 08:51: Purging cooling lines.

Thursday, May 17, 2012, 08:55: Venting.

Thursday, May 17, 2012, 09:21: Target removed

Aurelia Laxdal wrote:

Did the HV conditioning. Heaters conditioning in progress. The Hall probe is not working: couldn't pass 35.5 units (readback) or 50.16 units (setpoint) at field -3710G. Tried to turn ON/OFF magnet PS and to reboot Canbus, but nothing worked. Still waiting for E-Fault 6031 to be resolved. Started cool-down.

 Monday, June 04, 2012, 10:51: Turbos switched off

Monday, June 04, 2012, 11:06: Purging water. Venting.

Monday, June 04, 2012, 11:36: Target removed

Anders Mjos wrote:

HS water lines blanked. Monday, June 04, 2012, 11:40: Roughing. Monday, June 04, 2012, 11:58: Starting turbos.  Monday, June 04, 2012, 12:06 : Turbos at speed. Vacuum 1.5 E-5

 Tuesday, June 26, 2012, 16:06: Turbos off.

Tuesday, June 26, 2012, 17:20: Vented.

switched everything off to prepare for scheduled power outage on Monday

Thursday, July 12, 2012, 15:48: bypass removed