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.

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.

 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.

 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.

Wednesday, June 30, 2021, 19:08: Roughing

Thursday, July 01, 2021, 08:57: Turbos on 

Thursday, July 01, 2021, 09:11: TP1A timed out. Reset it. Waiting for CG1A to drop a bit more. 

Thursday, July 01, 2021, 09:19: TSG:BV1A interlock bypassed so that can be opened. TSGTP1A open

TP1A at speed

Thursday, July 01, 2021, 09:20: Interlock bypassed was removed.

Thursday, July 01, 2021, 09:20: IG1 on. 

Wednesday, July 07, 2021, 08:52 : IgG1 @ 4.64e-7 T.

Wednesday, July 07, 2021, 08:53: Waterlines open. No vacuum response. RGA does not respond, probably the filament burnt out.

Wednesday, July 07, 2021: Gas system has a tiny leak, probably from my initial checks about two weeks ago

Wednesday, July 07, 2021: During adjustments on the gas system the copper pipe yielded a bit and the leak clearly increases. I asked Maico to prepare new VCR connection for replacement (thanks!)

Thursday, July 08, 2021: The gas system inside the Faraday cage is not leaking anymore. However, the gauge inside the service cap does not respond to any pressure changes. It needs replacement.

Friday, July 09, 2021: Gas system troubleshooted with a small nitrogen bottle. Problem was on the two-stage regulator. Tighter connection fixed it.

Power supplies respond normal

Friday, July 09, 2021, 15:19: IV4 open.

Emittance meter power supply on.

Friday, July 09, 2021, 15:22: IG1 @ 4.40e-7 T.

Friday, July 09, 2021, 15:22: Auto-ramping TGHT/TBHT to 300 A / 150A @ 2A/min

Friday, July 09, 2021, 16:06: Emittance meter was not workin. Mike Rowen rebooted the IOC and that fixed the issue.

 Sunday, July 11, 2021, 16:40: IG1 @ 5.13e-7 T.

Sunday, July 11, 2021, 16:42:  Auto-ramping TGHT/TBHT to 550A / 250A @ 2A/min

Sunday, July 11, 2021, 16:43. Anode @ 100 V and  500 mA current limit. 

Monday, July 12, 2021, 09:15: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. - AS

FM

Monday, July 12, 2021, 09:41:  Auto-ramping TGHT/TBHT to 580A / 280A @ 2A/min

There seems to be an issue with the emittance meter. The scans seems to be successful but the plot is only noise.

Tuesday, July 13, 2021, 11:51: Telescope set on the magnet viewport: Grid is fine and I will check it continuosly.

The gauge inside the service cap is working now, as it actually never broke, a manual valve was still close inside the faraday cage.

I measured the voltage sent from the emittance PS, so the emittance meter receives voltage. I think the problem might be the faraday cup, either internally, or with the signal.

Tuesday, July 13, 2021, 15:54: Venting the beamline after the magnet to re-install the mass slit.

HV off

Tuesday, July 13, 2021, 16:19: TMS:BV6 open.

Tuesday, July 13, 2021, 16:21: TMS:BV2 open.

Tuesday, July 13, 2021, 16:27: TMSTP6 and TMSTP2 on.

Tuesday, July 13, 2021, 16:32: TMSIG6 On.

Tuesday, July 13, 2021, 16:40: HV on.

 Wednesday, July 14, 2021: Troubleshooting the emittance meter. I think I saw some indications of beam so it might be that I just need more intensity for a proper measurement.

Moving on, I tested the code as I want to implement a a couple of things: record a bidimensional anode current to make sure I capture any chance with the coil (if any), use temperature estimation from heating power as well.

When running a magnet-anode scan on sodium I triggered the high efficienct regime. This indicates that the cathode is either hotter or closer. With 280 A I am inclined on the latter.

The regime is unstable as the voltage fluctates as well as the ion current. Over a period of two hours

Friday, July 16, 2021, 12:08: Hv off to increase upstream pressure from |200| to |240| kPa, which is the maximum I can achieve with my two-stage regulator.

Friday, July 16, 2021, 12:15: Mass scan.

Friday, July 16, 2021, 13:54: TBHT to 260 @ -2A/min.

 Friday, July 16, 2021, 14:09: HV off.

Friday, July 16, 2021, 14:17: BIAS / EE / EZL @ 30 / -1.5 / 12.5 kV.

Friday, July 16, 2021, 14:17: Mass scan ongoing. Done for the day (on-site)

Saturday, July 17, 2021: Mass scans in both normal and anomalous regime.

Sunday, July 18, 2021, 07:42: Found TSG:CBC in a red state. Using the cfg button on the canbus utilities does not work. Likely the canbus card needs to be replaced.

Monday, July 19, 2021: AS fixed the CBC

Increased anode current limit to 600 mA. More ion current.

Anode voltage setpoint=500 A, anode voltage readback=250 V.

Moving the setpoint to 250 causes no effect. But when moving the setpoint to 245 V, the ion current, and the drain current decrease.

Putting together previous findings to discuss what to do next.

Grid still fine.

Tuesday, July 20, 2021, 17:22:   TBHT to 240 @ -2A/min.

Around 16:30 there was a slight target voltage drop. This coincided with the anode getting current limited (500mA) at 100V.

 Tuesday, July 20, 2021, 17:47:  IG1 reacts to the "sparks" observed on the anode leackage current.

Lowering the anode voltage to 0 V. I'll go on-site tomorrow to check the state of the grid and to check if there are visible sparks inside the chamber.

Wednesday, July 21, 2021, 12:40: entries from early today lost I'll try to summarize what has happened:

grid still fine

Manually sweeping the anode but no visual of any kind inside the vacuum. IG1 still reacts to sudden increase of leakage current but nothing observed inside the vacuum chamber.

 anode leakage current responds to decreasing the target heating current when lowering to 235A.

When going to 200 A, the anode leakage current drop to 0 mA when the cathode reached 211.

Now the cathode gets current limited as of 1 V.

grid still fine.

Wednesday, July 21, 2021, 12:44: TGHT/TBHT to 0 A @ -2A/min 

 Wednesday, July 21, 2021, 14:43: TBHT @ 0 A, TGHT @ 340 A. Setting the anode voltage to 500 V has a leakage current of 102.5 mA.

Wednesday, July 21, 2021, 22:19: IV4 closed

 Wednesday, July 21, 2021, 22:21:  BIAS / EE / EZL @ 0.000 kV.

Wednesday, July 21, 2021, 22:22:  IG1 off. Turbos off.

Thursday, July 22, 2021, 10:44: Venting:

Monday, June 28, 2021, 09:22: Roughing.

Monday, June 28, 2021, 10:10: TP1B on.

Monday, June 28, 2021, 10:22: TP1A on (Tripped)

Monday, June 28, 2021, 10:30: Both turbo pumps off. Leave it under a rough vacuum.

Fernando

Wednesday, June 30, 2021, 15:09 : Venting

Replacement Ta target for the previous one (44139-10) https://elog.triumf.ca/TIS/Test-Stand/880

Friday, June 25, 2021, 11:16: Roughing.

Friday, June 25, 2021, 11:55: TP1B started.

Friday, June 25, 2021, 12:00: TP1B on. TP1 A started.

Friday, June 25, 2021, 12:08: IG1 on.

Friday, June 25, 2021, 12:23: Vacuum @ 1.06E-05T. Open waterline FS#5.

Friday, June 25, 2021, 12:26: Vacuum @ 9.97E-06T. OK.

Friday, June 25, 2021, 12:30: Power / sources PS on.

Friday, June 25, 2021, 12:34: Full check for remote use. IV4 open (OK)

Vacuum @ 6.70e-06T

TGHT / TBHT @ 10 / 10 A

BIAS / EE / EZL @ 1 / -0.1 / 0.5 kV.

Ready for operation.

Friday, June 25, 2021, 12:39: All back to 0 Kv / 0 A. Wait for vacuum stabilization.

Sunday, June 27, 2021, 03:55: Auto-ramping TGHT / TBHT to 500 / 150 A @ 2 A per min.

Sunday, June 27, 2021, 04:04: BIAS / EE / EZL @ 20 / -1.0 / 10 kV. 

Sunday, June 27, 2021, 09:36: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Sunday, June 27, 2021, 10:07: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.  

Sunday, June 27, 2021, 10:16: TGHT / TBHT @ 580 / 230 A. Vacuum @ 1.25e-06T.

Sunday, June 27, 2021, 11:20: Mass & wire scans complete. Vacuum @ 1.14e-06T. Auto-cooling @ 2 A per min.

Sunday, June 27, 2021, 15:07: BIAS / EE / EZL @ 0 kV. TGHT still cooling.  

Monday, June 28, 2021, 06:17: IV4 closed (Needs reset). Sources, IG1, turbo pumps, off 

Monday, June 28, 2021, 08:22: Power off. IV4 reset. Venting.

Wednesday, June 23, 2021, 12:22: Roughing.

Wednesday, June 23, 2021, 13:22: TP1B on.

TP1B tripped.

Wednesday, June 23, 2021, 15:05: TP1B was restarted.

Wednesday, June 23, 2021, 15:15: TP1B on.

Wednesday, June 23, 2021, 16:21: TP1A started.

Wednesday, June 23, 2021, 16:30: IG1 on.

Wednesday, June 23, 2021, 17:53: FS#5 opened. Vacuum @ 7.52e-06T

Wednesday, June 23, 2021, 17:56: Vacuum Stable. Power on. TGHT / TBHT on.

Thursday, June 24, 2021, 05:40: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min. 

Thursday, June 24, 2021, 09:00: IV4 Opened.

Thursday, June 24, 2021, 09:02: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Thursday, June 24, 2021, 09:10: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Optics on & set

Thursday, June 24, 2021, 12:52: Mass / Wire scans complete

 Thursday, June 24, 2021, 14:00: Auto-cooling @ 2 A per min.

 Thursday, June 24, 2021, 14:08: Auto-cooling aborted. TGHT / TBHT back to 580 / 230 A. Checking the emittance rig.

Thursday, June 24, 2021, 22:20: Auto-Cooling & HV off. - CB

Friday, June 25, 2021, 05:32: Sources off. IV4 closed. IG1 & Turbo pumps off.  

Friday, June 25, 2021, 07:09: IV4 reset. Power off. Venting.

Replace 9-pin back to normal grounded setup. Re-salt Ta#62. (Cu Gaskets in-use on FS#5)

Monday, June 21, 2021, 11:30: Roughing chamber.

Monday, June 21, 2021, 11:50: Removed backing window. Roughing beam line side.

Monday, June 21, 2021, 12:01: Multimeters removed. Back HV rack re-grounded. TP6 & TP2 on.

Monday, June 21, 2021, 12:02: TP1B on.

Monday, June 21, 2021, 12:13: TP1A on.

Monday, June 21, 2021, 12:21: IG1 on.

Monday, June 21, 2021, 14:37: Vacuum @ 3.96e-06T. Open FS#5

Monday, June 21, 2021, 14:39: Vacuum @ 3.76e-06T.

Monday, June 21, 2021, 14:42: Power / Sources on.

Monday, June 21, 2021, 14:43; IV4 opened & Optics on

Tuesday, June 22, 2021, 07:40: Quick system check ok.

Tuesday, June 22, 2021, 07:42: Auto-ramping TGHT / TBHT to 300 / 150 A @ 3 A per min.

Tuesday, June 22, 2021, 09:36: TGHT / TBHT @ 300 / 150 A. BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Tuesday, June 22, 2021, 09:38: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Tuesday, June 22, 2021, 09:46: External / cage sparks* Multiple.

Tuesday, June 22, 2021, 09:58: Turn down BIAS to 25 kV.

Tuesday, June 22, 2021, 12:45: BIAS to 30 kV.

Tuesday, June 22, 2021, 13:05: Odd. There was activity on FC0 right when the HV was turned on before the 580 ramp up. Now, no activity on FC0, or wire scans. Turning HV down / off.

Tuesday, June 22, 2021, 13:10: BIAS / EE / EZL @ 0 kV.

Tuesday, June 22, 2021, 13:41: Rear cage opened. Digital multi-meter was removed.

Tuesday, June 22, 2021, 13:48: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Tuesday, June 22, 2021, 13:57: No beam. Auto-cooling @ 3 A per min.

Tuesday, June 22, 2021, 16:23: HV power off. Optics off. IV4 off. TGHT still cooling.

Wednesday, June 23, 2021, 04:31: IG1 & turbo pumps off. 

Wednesday, June 23, 2021, 06:00: Venting. Power off. FS#5 purged.

Installed a new window on MB1 as per Aurelia. Connect modified 9 pin connector & voltage meters for Ta#62 testing.

Ref:

https://elog.triumf.ca/TIS/Test-Stand/679

Pin configuration between top 9-pin connector on Source Tray and terminal in high voltage rack. Measured 2018-08-21 by Aaron and Anders

Wednesday, June 09, 2021, 14:41: Pins connected source tray side: 1, 4, 5, 6

https://elog.triumf.ca/TIS/Test-Stand/721

ST 9-pin                       HV rack

Pin to L TGHT - 1 - Black / COM / 5

Pin to R TGHT - 6 - Red / 9

Pin to L TBHT - 4 - Black / COM / 2

Pin to R TBHT - 5 - Red / 1

Wednesday, June 09, 2021, 14:29: Window installed. Roughing -  Beam line side.

Wednesday, June 09, 2021, 14:41: TP6 on.

Wednesday, June 09, 2021, 14:45: TP2 on.

Wednesday, June 09, 2021, 14:55: Roughing.

Wednesday, June 09, 2021, 16:09: TP1 on.

Thursday, June 10, 2021, 13:25: Power / sources on. FS#5 open.\

TGHT reading ok , TBHT odd? Internal connection.

Thursday, June 10, 2021, 14:45: Turbo pumps off.

Thursday, June 10, 2021, 15:25: Venting.

Thursday, June 10, 2021, 16:16: Fixed TBHT connection. Roughing.

Thursday, June 10, 2021, 16:20: Bypass used. TGHT / TBHT to 40 A each. Multimeter check ok.

Thursday, June 10, 2021, 16:24: TGHT / TBHT to 0 A. Bypass removed.

Thursday, June 10, 2021, 16:43: TP1B on.

Thursday, June 10, 2021, 16:48: TP1A on.

Thursday, June 10, 2021, 16:55: IG1 on

Tests Complete as per Aurelia.

Monday, June 21, 2021, 07:51: Power / sources off. IG1 & IG6 off. All TP off. FS#5 purged.

Monday, June 21, 2021, 09:40: Venting both ends.

Tuesday, June 08, 2021, 08:25: IV4 open. Optics set minus TPS:CB2. Shows as green 'on', set to 500V, however read back shows as 0 V.

Wednesday, June 09, 2021, 08:37: HV off. Attempts made to restart TPS:CB2 unsuccessful. Controls notified.

Wednesday, June 09, 2021, 11:49: Card replaced by controls. Verified "Ok"  in " LB Mode": RDVOL, RDCUR, RDDAC all similar. Operational again.

Monday, June 07, 2021, 14:39: Roughing beam line section.

Monday, June 07, 2021, 14:46: TMS:TP6 on.

Monday, June 07, 2021, 14:49: TMS:TP2 on.

Wednesday, June 09, 2021, 10:00: FC6 wiring reconnected. 

Monday, June 07, 2021, 13:44: Roughing.

Monday, June 07, 2021, 14:16: TP1B on. (Tripped shortly after?)

Monday, June 07, 2021, 14:32: Unstable. Venting.

Monday, June 07, 2021, 15:05: Changed gaskets. Left side suspect. Roughing.

Monday, June 07, 2021, 15:35: TP1B on.

Monday, June 07, 2021, 15:42: TP1B up to speed.

Monday, June 07, 2021, 15:45: TP1A on.

Monday, June 07, 2021, 16:01: IG1 on.

Monday, June 07, 2021, 16:02: FS#5 opened. No response on backing lines. TSG:IG1 ok.

Tuesday, June 08, 2021, 08:01: Power / sources on.

Tuesday, June 08, 2021, 08:07: Reset / CFG optics & steering.

Tuesday, June 08, 2021, 08:08: TGHT / TBHT @ 10 A ok. BIAS / EE / EZL @ 5 / -0.5 / 1 kV. Quick system check ok.

Tuesday, June 08, 2021, 08:13: Auto ramping TGHT / TBHT to 350 / 150 @ 2 A per min.

Tuesday, June 08, 2021, 08:19: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Small spark near 30 kV while bringing up the HV.

Tuesday, June 08, 2021, 08:25: IV4 open. Optics set minus TPS:CB2. Shows as green 'on', set to 500V, however read back shows as 0 V.

Tuesday, June 08, 2021, 12:44: Auto ramping TGHT / TBHT to 580 / 230 @ 2 A per min. 

Tuesday, June 08, 2021, 15:53: Beam on FC0 ok. Optics set minus TPS:CB2, however FC6 is disconnected. auto-cooling @ 3 A per min.

Tuesday, June 08, 2021, 18:32: Auto-cooling halted. TGHT @ 104.3 A. 

Wednesday, June 09, 2021, 07:13: Auto-cooling continued @ 2 A per min. 

Wednesday, June 09, 2021, 08:37: HV off. Attempts made to restart TPS:CB2 unsuccessful. Controls notified.

Wednesday, June 09, 2021, 10:33: Power /  sources off. FS#5 purged. IV4 closed. IG1 & IG6 off. All turbo pumps off.

Wednesday, June 09, 2021, 11:52: Venting VV1 & VV6.

 Straight tube target / TGHT for outgassing.

Wednesday, June 02, 2021, 11:06: Roughing.

Wednesday, June 02, 2021, 12:15: TP1B on. 

Wednesday, June 02, 2021, 12:54: TP1 A on. IG1 on. 

Wednesday, June 02, 2021, 14:58: Vacuum @ 2.24e-06T

Wednesday, June 02, 2021, 15:01: Waterlines opened. vacuum remained stable.

Wednesday, June 02, 2021, 15:02: Power / sources on.

Thursday, June 03, 2021, 11:18: Auto-ramping TGHT @ 2 A per min to 580A. 

Sunday, June 06, 2021, 21:26: Auto-cooling @ 1 A per min. 

Monday, June 07, 2021, 08:33: Power/sources off. IG1 off. Turbo pumps off.

HS waterlines were very tight to line up.

Wednesday, May 26, 2021, 14:29: Roughing.

Wednesday, May 26, 2021, 15:09: TP1B on. 

Wednesday, May 26, 2021, 15:36: TP1B off. 

Wednesday, May 26, 2021, 16:37: Venting. 

Wednesday, May 26, 2021, 18:03: VV1 closed. 

Thursday, May 27, 2021, 07:05: Gaskets swapped. Connections inspected. Roughing.

Thursday, May 27, 2021, 07:47: TP1B on. 

Thursday, May 27, 2021, 08:00: TP1A started.

Thursday, May 27, 2021, 08:16: IG1 on. 

Monday, May 31, 2021, 08:08: Vacuum @ 7.29e-07T.

Monday, May 31, 2021, 08:10: Waterlines opened. Vacuum ok @ 7.26e-07T

Monday, May 31, 2021, 08:12: Power/Sources on.

Monday, May 31, 2021, 08:15: No response on TGHT. TBHT ok.

Monday, May 31, 2021, 11:30: Loose control cable found on the PS. Connected. Manually set TGHT / TBHT to 10 A & back ok. Checked FS#5 interlocks - OK.

Monday, May 31, 2021, 11:50: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min.

Monday, May 31, 2021, 18:06: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Tuesday, June 01, 2021, 15:40: Auto-cooling @ 1 A per min.

Wednesday, June 02, 2021, 07:57: Power / sources off. Ion gauge & turbo pumps off. 

Wednesday, June 02, 2021, 07:58: FS#5 purged.

Wednesday, June 02, 2021, 10:12: Venting.

Parasitic assemblies on the lid & end plate included. Online HS.

Wednesday, May 19, 2021, 16:00: Roughing.

Thursday, May 20, 2021, 08:42: Turbo pumps were turned on last night. Vacuum @ 9.99e-07T.

Thursday, May 20, 2021, 08:44: FS#5 open. Vacuum ok.

Thursday, May 20, 2021, 08:45: Power / sources on.

Thursday, May 20, 2021, 09:34: Turbos OFF

Thursday, May 20, 2021, 10:37: Venting.

Thursday, May 20, 2021, 11:28: P2N legs no longer touching. Roughing.

Thursday, May 20, 2021, 12:05: Turbo pump TP1B on.

Thursday, May 20, 2021, 12:10: Turbo pump TP1A on.

LE:

Thursday, May 20, 2021, 15:00: Ramping stared at high warming rate. 10 or 5 A every 15 seconds

Friday, May 21, 2021, 01:31: Around midnight, the P2NHT current was very noisy for few hours, and then it dropped to zero. Turbos are now stopped to open up and investigate.

Friday, May 21, 2021, 05:45 P2N assembly removed, water lines closed and purged - one leg is fully broken

FBP:

HV tests Monday 24/05/2021 and Tuesday 25/05/2021

HS was ramped up to 30KV on monday, only 1 spark seen over night. BIAS/EZL/EE : 30KV/14KV/-1.5

Ramping to max HV on Tuesday.

40KV

AS:

Tuesday, May 25, 2021, 11:5: HV tapped down to 0 kV on BIAS / EE / EZL.

Wednesday, May 26, 2021, 07:23: Power / sources off. IG1 off. Turbo pumps off.

Wednesday, May 26, 2021, 09:04: Venting. Waterlines purged.

LE:

Wednesday, May 26, 2021, 10:37 Target removed from test stand and brought to cold lab

 Wednesday, April 28, 2021, 22:30

First P2N heating test ongoing.

At P2NHT ~ 570 A and TBHT ~ 100 A shine is already seen, which suggests that current is flowing in the P2N target properly, see picture attached.

Most of the ramping is carefully monitored because the good vacuum signal from the TTS ramping procedure is obviously not working (bypassed), and if the pressure goes past 1E-5T the whole ITS should interlock and abruptly drop the currents, which we want to avoid.

Wednesday, April 28, 2021, 23:16

P2NHT set current = 810 A

P2NHT read current = 800 A

Master and slave have balanced fully, TBHT ramping still proceeds manually. I'm trying to get it to ~200A before leaving.

 Thursday, April 29, 2021, 00:54

Ramping successfully achieved.

P2NHT_Master = 594 A - 4.59 V

P2NHT_Slave = 611 A - 4.89 V

P2NHT = 1207 A

TBHT = 231 A - 2.29 V

Max temperature of welding cables = 40 deg

Zero current from the HV ground terminal (feedthrough I) to slave negative (feedthrough H)

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

 Wednesday, April 14, 2021, 10:18

Work started to bring the ATTS PS inside the ITS HV cage. HV grounding rod and metal sheet around breaker panel were removed - see picture.

 Friday, April 16, 2021, Afternoon

HS line purged and turbos shut down.

Monday, April 19

Morning, Anders vented ITS

11AM, Dan found o-ring and indium seal on the same connector - likely this was the cause of the leak. replaced by a brand new indium seal, punched with the RH punchers, which seems the way to go.

Evening, Luca disinstalls FEBIAD from Fernando, and installs the P2N target. It has not been leak checked in the cold lab prior to installation (I'm not sure where all the equipment is), and no resistance measurements were carried out since I couldn't find Travis's ohm-meter.

Vacuum coming down, but slowly than I expected (took 1h to get from 2e-5 to 1e-5 T, is this right?)

Tuesday, April 20, 2021, 15:33

This morning Ray installed the controls cables connecting the ATTS PSs. They are still attached to the ATTS PLC, but their interlock signal now comes from the TBHT "enable" , through a 15V signal. Once the power is ON, he recommends checking that the TBHT sends the proper 15V (has to be higher than 12V) to the ATTS PLC, checking the voltage between the red and green/while cables on the PLC module labelled "TGHT:MAS". This should be done once the TBHT is "enabled", so the signal is sent.

The DC cables were installed going from the positive and negative poles of the ATTS:SLV. The order and number of 4/0 cables are:

Positive: One cable to G and two cables to E

Negative: One cable to H amd two cables to F

This should be checked with Arthur once he's on site (tomorrow).

A water leak was still seen, while the pressure was around 1E-6 T. Checking all three loops of FS#3, it's confirmed again that the leak is in HF. Will need top open up and pinpoint the leak.  

Thursday, April 22, 2021, 13:45

The lines F and G were inspected for water leaks. After blanking them to inspect the solder joint along the lines, two new indium seals were repositioned, the lines sniffed and no signs of leaks were detected. TS closed up again, pumping down now.

 Friday, April 23, 2021, 21:06

Pressure in ITS slowly coming down. This morning was ~3E-6T and now is 2E-6T. Water was flowing for most of the day, but I turned it off and purged FS#3 with no significant difference. I re-turned it on in order to run short PS tests with little current (up to ~10 A) for few seconds every time. Now I purged FS#3 again to leave the TS pumping over the weekend with air, so that opening the water in few hours/days might give us a better idea if the leak is still there.

As far as power supplies, we ran lots of tests today with Ray and Arthur (both were remotely connected through Teams). Initially the tests were unsuccesful because I kept turning off the main breaker when testing the electronics, and only later realized the ITS-PLC is connected to the same breaker.

After this realization, we progressed step by step: we confirmed that the enable signal (~13 V) was seen by both the ITS-TBHT and the ATTS-MASTER, however we realized that the ATTS:MASTER was *not* turning OFF when it should have. This is because the shutoff voltage signal was not zero, but was around ~1V, and was enough to turn OFF the TBHT (Xantrex) but not the ATTS:MASTER (TDK). Arthur suggested this could be due to the fact that two PLC are tied to each other, and see different "grounds", hence some voltage confusion might be coming from here. After taking a look at the connections in the ATTS PLC, we decided to try isolating the ATTS:MASTER module from its ground connection by disconnecting the yellow and green wires coming from the top of its PLC module, and this resolved the issue when the DB25 connector of the ATTS"MASTER is disconnected from the PS; however, once this DB25 is connected, the voltage seen by the MASTER is still ~1V and not zero, and still enables the PS when it should instead be shutoff. 

Next week we should try to find the proper wire configuration that allows seeing zero V as shutdown signal and not ~1V.   

Tuesday, April 27, 2021, 20:56

The new P2NHT power supply configuration is now operational at the test stand. A relay was added in the PLC cabinet to take a +15V signal from the TBHT PLC module and close a short circuit to "enable" the P2NHT master and slave (TDK-LAMBDA).

After initial ramping up to ~222A, I noticed the voltage read by the PS was about 0.45V, while extrapolating the results from the previous ITS-P2N run, the voltage should have been ~0.9V. I would like to measure the resistances of the lines to pick up potential shorts in the copper conductors in the vacuum chamber.  

Wednesday, April 28, 2021, 11:30 

This morning, the resistance matrix was measured between the feedthroughs of the test stand, see attached picture.   

TBHT+ = A

TBHT- = B

P2NM- = C

P2NM+ = D

P2NS+ = G,E

P2NS- = F,H

Talking to Carla, we agree that the matrix seems correct and does not show any signs of short in the lines. But still, the voltages read by the PS seem too low compared to the previous run on July 2020.

Wednesday, April 28, 2021, 19:14

To make sure that current is not flowing where it is not supposed to be, the ion source only (A, B) was hooked up  to the TBHT

Voltages: 

A/C (TBHT+ / P2NM-)=-0.11 V

A/D (TBHT+ / P2NM+)=-0.11 V

B/C (TBHT- / P2NM-)=0.21 V

A/B (TBHT+ / TBHT-) = 0.33 V

While the PS reads 0.42 V --> The two lines made up by two welding cables each make up for the remaining 0.09 V

There's no current flowing anywhere else, all other feedthrough have V=0 between each other.

Wednesday, April 28, 2021, 20:01

Welding cables attached so that the P2NM and P2NS only (TGHT and COIL) are delivering current to the target.  

At 230A of the P2N heater (130 on the master, 102 on the slave), the sum of all current coming and going to the feedthroughs balances out. 

The voltages across feedthroughs make sense:

B/C (TBHT+ / P2NM-)= 0.20 V

B/D (TBHT+ / P2NM+)=0.22 V

A/B (TBHT+ / TBHT-) = 0.0 V

C/D (P2NM- / P2NM+) = 0.44 V

E/C (P2NS+/P2NM-) = 0.46V

The current going from I (HV common) to H (P2NS-) is zero (0.3A)

After checking these values, I see no reasons to believe the wiring is incorrect, and will proceed with the full installation of P2N heater and TBHT, and ramping up the whole system together. It was noticed though that the TBHT cannot be ramped automatically since the ITS TGHT is not connected to the PLC, and needs to be ramped by hand.

Changed the gaskets from C-seals on FS#3 water blocks E, F,& H. G was already done.

Tuesday, April 13, 2021, 13:23: FS#3 Waterline opened.

Tuesday, April 13, 2021, 13:25: No immediate water noticed visually or on the gloves.

Tuesday, April 13, 2021, 13:31: Visual leak present on (F). Purge the line.

Change the gasket.

Tuesday, April 13, 2021, 14:42: FS#3 Waterline opened.

Tuesday, April 13, 2021, 14:55: No water leak noticed visually or on the gloves.

Tuesday, April 13, 2021, 14:58: Roughing. Will leak check under vacuum tomorrow morning.

Tuesday, April 13, 2021, 16:01: TP1B on. 

Tuesday, April 13, 2021, 20:53: TP1A on. 

Tuesday, April 13, 2021, 20:58: IG1 on.