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. 

IG1 has been spiking randomly, causing everything to turn off. Looks like the water leak is still there.

AS - Multiple purges done on RP1 & the backing lines. Some water noted. FS#3 is closed.

Tuesday, April 06, 2021, 09:39: TP1B on.

Tuesday, April 06, 2021, 10:01: TP1A on.

Tuesday, April 06, 2021, 10:12: IG1 on. Vacuum @ 1.97e-05T.

Tuesday, April 06, 2021, 11:00: FS#2, #4, & #5 open. Vacuum @ 5.73e-06T.

Tuesday, April 06, 2021, 11:12: Vacuum @ 5.09e-06T. Open FS#3.

Tuesday, April 06, 2021, 11:17: IG1 @ 4.64e-06T. Open IV4. Reset optics & sources.

Tuesday, April 06, 2021, 11:20: Optics on.

Test were run

Thursday, April 08, 2021, 10:30: Power / sources off.

Thursday, April 08, 2021, 10:34: IG1 & turbo pumps off.

Emittance meter number 2 ready for beam shortly - installed and pumping down.

No beam found by Thursday evening, but beam seems to be coming out much differently than last time. Will check on emittance meter functionality and try to re-tune later.

Ramping things down for the next couple days.

Saturday, April 03, 2021, 10:41 :

Source heating ramped back up, everything back on. Will try to straighten out steering then see if I can get things back in the previous positions.

Saturday, April 03, 2021, 14:59 :

Nothing seems to be working, will vent the beamline and remove the slit.

Saturday, April 03, 2021, 15:36 :

Apparently closing the valve started a vacuum leak that tripped everything in the source. I noticed within the first minute and ramped everything back up, maybe too quickly....

Have now put everything in a holding state, will resume tomorrow.

Sunday, April 04, 2021, 14:17 :

Found everything off again this morning. Ramping back up in the hopes that I can get something done before the whole system trips again. The trips look like water leaks again.

Uninstalled the slit and left it in the bottom of the vacuum box. Swapped the window to the computer side for convenience. Seal on the other side on the CF flange is a bit weird, not sure if it is in properly...

Sunday, April 04, 2021, 18:43

Still no beam. TISA emittance FC won't come back on, so waiting for Mike Rowe to troubleshoot on Tuesday. Will ramp things down all the way, since I expect the vacuum to trip the source before I need it again.

Tuesday, April 06, 2021, 23:43

Found some beam, but looks really weird, like it is cut off. Good enough. Ramped everything down.

Vented beamline and removed ARIEL emittance meter. In the process of swapping components, beamline left vented until Monday when we will finish the job.

Lot's of water visually present in the chamber.

Wednesday, March 24, 2021, 13:17: Water lines purged.

Vent & wipe out the water inside the chamber. Setup a fan to aid in drying. Manually purge the water from the RP1 Scroll pump through the exhaust.

Thursday, March 25, 2021, 08:06: Gradually open each line to check the water blocks & fittings for a visual leak. Open the ballast plug on RP1, as well as manually purge the water from the RP1 Scroll pump through the exhaust again.

Thursday, March 25, 2021, 08:34: Leak found on FS#3 - Left Coil return (G) water block.

Thursday, March 25, 2021, 09:15: FEBIAD assembly & L-Coil line removed.

Thursday, March 25, 2021, 11:38: Re-connect RP1 to the exhaust port & re-insert the ballast plug.

Thursday, March 25, 2021, 11:40: RP1 Ok. CG1A & CG1 B around 0.048T & dropping. Chamber still open.

Indium gasket installed on G, C-Seal on E.

Friday, March 26, 2021, 08:21: Roughing.

Friday, March 26, 2021, 09:08: Vacuum @ 2.001 T. Opened FS#3 waterline. Quick test.

Friday, March 26, 2021, 09:11: Vacuum @ 1.901 T. No observable spike on CG1.

Friday, March 26, 2021, 09:12: Close FS#3 & purge

Friday, March 26, 2021, 09:27: Quickly open ballast plug.

Friday, March 26, 2021, 09:30: Re-insert plug.

Friday, March 26, 2021, 09:38: CG1 @ 2.253 T.

Friday, March 26, 2021, 09:41: Close BV1A & B.

Friday, March 26, 2021, 09:45: Manually purge water from the RP1 Scroll pump through the exhaust.

Friday, March 26, 2021, 09:51: Re-open BV1A & B.

Friday, March 26, 2021, 10:17: Close BV1A & B. Manually purge water from the RP1 Scroll pump through the exhaust.

Friday, March 26, 2021, 10:26: Close the exhaust & give the pump time to recover.

Friday, March 26, 2021, 10:36: Briefly vent the chamber to 30 T. Re-open BV1A & B.

Friday, March 26, 2021, 11:20: Vacuum @ 1.706T. Open FS#3. Allow to fill with water, then close off. No observable spike on CG1.

Friday, March 26, 2021, 11:25: Opened ballast cap. Close BV1A & B.

Friday, March 26, 2021, 11:26: Close ballast.

Friday, March 26, 2021, 11:29: Briefly vent the chamber to 30 T. Re-open BV1A & B.

Friday, March 26, 2021, 12:11: Vacuum @ 2.75T. Close BV1A & B. Vent chamber to setup a fan.

Monday, March 29, 2021, 09:00: LD & He attached. LD#2 as supplied via Vacuum group.

Monday, March 29, 2021, 09:01: Sniffer set. Leak Rate @ 2.0E-07 to 2.3E-07 atm-cc/sec

Monday, March 29, 2021, 09:03: Pressurize (E)(G) to 75 PSI.

Monday, March 29, 2021, 09:05: No major spike seen on LD.

Monday, March 29, 2021, 09:06: Pressurize (E)(G) to 100 PSI.

Monday, March 29, 2021, 09:09: No major spike seen on LD. Purge He from the lines.

Monday, March 29, 2021, 09:12: Roughing.

Monday, March 29, 2021, 09:22: Opened ballast cap to release water vapour while roughing.

Monday, March 29, 2021, 09:42: Closed the ballast cap. Purge cycle RP1 on & off for the next hour or so.

To purge cycle RP1 for water vapour. Close BV1A & B. Disconnect exhaust line from RP1 & open the upper ballast. Close PV1, Vent with TSG:VV1A till the line reaches atmosphere with dry nitrogen.

Close VV1 & open PV1. Water should spew out of the exhaust. Rough the backing lines down. Open BV1A & B to rough then chamber. Repeat leaving the upper ballast open.

Monday, March 29, 2021, 14:00: Purge RP1. Close upper ballast, re-connect exhaust.

Monday, March 29, 2021, 14:36: TP1B on.

Monday, March 29, 2021, 19:47: TP1A on. 

Monday, March 29, 2021, 19:55: IG1 on. 

Tuesday, March 30, 2021, 08:52: Vacuum @ 4.48e-06T.

LD to TP1B base @ 1.4E-08 to 1.9E-08 atm-cc/sec.

Tuesday, March 30, 2021, 08:58: He @ 55 PSI

Tuesday, March 30, 2021, 09:04: LD to TP1B base @ 2.4E-08 atm-cc/sec.

Tuesday, March 30, 2021, 09:12: Reconnect FS#3 to DI.

Tuesday, March 30, 2021, 09:14: Opened FS#3 w/ DI

Tuesday, March 30, 2021, 09:20: Vacuum @ 4.40e-06T.

Tuesday, March 30, 2021, 09:33: FS#2, 4, & 5 open. Vacuum ok @ 4.40e-06T

Tuesday, March 30, 2021, 09:34: Power/sources on.

Tuesday, March 30, 2021, 09:37: Auto-ramping TGHT / TBHT to 200 / 100 A @ 2 A per min.

Tuesday, March 30, 2021, 12:12: Auto-ramping TGHT / TBHT to 350 / 125 A @ 2 A per min. 

Tuesday, March 30, 2021, 13:50: Vacuum @ 4.66e-06T. Auto-ramping TGHT / TBHT to 450 / 150 A @ 2 A per min.

Tuesday, March 30, 2021, 21:59: Vacuum @ 5.01e-06T. TGHT / TBHT @ 393 / 150 A. Reset Auto-ramping TGHT / TBHT to 550 / 200 A @ 2 A per min.

Wednesday, March 31, 2021, 11:46: IV4 opened. Optics & HV power switched on.

Wednesday, March 31, 2021, 11:52: HV check ok. Optics reset. BIAS / EE / EZL @ 1 / 0.1 / 1 kV. Coil @ 4 A. Anode @ 100 V

Wednesday, March 31, 2021, 11:54: Optics remain on. HV & coil back to 0. Ready to run once the Vacuum returns to a reasonable level. Vacuum @ 5.45e-06T.

Wednesday, March 31, 2021, 15:05: Auto-ramping TGHT / TBHT to 580 / 270 A @ 2 A per min.