Anders Mjos wrote:

A new power supply was installed today by John Chow. Due to differences in pin configuration of the controls, a change to the cabling is required. Contacted controls (Julie) for support.

 Ray from controls has updated EPICS and changed the cabling today. The power supply is operational.

NOTE: Current limit will need to be set in EPICS. Default value should be 0.1 mA for now.

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.

 https://elog.triumf.ca/TIS/Test-Stand/791

https://elog.triumf.ca/TIS/Test-Stand/792

Tuesday, May 19, 2020, 06:01: Venting. 

Troubleshoot / Leak Check ISAC TS.

Tuesday, May 19, 2020, 06:35: Quite a bit of condensation was found inside the TS. Most lines had water on them.

Tuesday, May 19, 2020, 07:09: Wiped out the interior. Running a fan inside to aid in the drying.

Tuesday, May 19, 2020, 08:20:

Opened lines FS#2,3,4. No visual leaks detected.

Installed previously used/outgassed HS (Ferran's tests). Replaced all the bolts.

Roughing.

Tuesday, May 19, 2020, 08:32: Multiple attempts made to rough. Doors not sealing?

Tuesday, May 19, 2020, 08:58: IT FINALLY SEALED!!! (Assistance was provided on the doors)

Tuesday, May 19, 2020, 09:02: BV1B Open.

Tuesday, May 19, 2020, 10:54: Vacuum @ 15.339 T.

Tuesday, May 19, 2020, 10:59: FS#2 opened.

Tuesday, May 19, 2020, 11:02: Vacuum @ 15.069 T.

Tuesday, May 19, 2020, 11:03: FS#3 opened.

Tuesday, May 19, 2020, 11:06; Vacuum @ 15.069 T

Tuesday, May 19, 2020, 11:07: FS#4 opened.

Tuesday, May 19, 2020, 11:10: Vacuum @ 15.069 T.

Tuesday, May 19, 2020, 11:11: FS#5 Opened.

Tuesday, May 19, 2020, 11:13: Vacuum @ 15.069 T.

Tuesday, May 19, 2020, 11:30: Close & purge cooling lines. Observe Vacuum.

Left open overnight. Ran the fan on it this morning.

All water lines into the TS closed. FS# 2,3,4,5, & 8.

Wednesday, May 20, 2020, 08:35: Roughing.

Wednesday, May 20, 2020, 08:50: BV1B open. Vacuum at 8 T and dropping.

Wednesday, May 20, 2020, 10:12: Vacuum at 2.635 T.

Wednesday, May 20, 2020, 10:14: FS#2 opened.

Wednesday, May 20, 2020, 10:17: Vacuum @  2.646 T.

Wednesday, May 20, 2020, 10:19: FS#3 opened.

Wednesday, May 20, 2020, 10:24: Vacuum @ 2.764  T

Wednesday, May 20, 2020, 10:25: FS#4 opened.

Gradual increase is noted, but no obvious spike.

Wednesday, May 20, 2020, 10:28: Vacuum @  2.816 T.

Wednesday, May 20, 2020, 10:32: Vacuum @ 3.606 T.

Starting to spike.

Wednesday, May 20, 2020, 10:36: Closed supply / return. Purged. Closed the lines Vacuum @  4.173 T.

Wednesday, May 20, 2020, 10:54: Vacuum @ 3.984 T.

Wednesday, May 20, 2020, 10:58: FS#2 opened.

Wednesday, May 20, 2020, 11:10: Vacuum @ 3.858 T.

Wednesday, May 20, 2020, 11:11: FS#3 opened. Vacuum spiking 4.3T +

Wednesday, May 20, 2020, 11:15: Closed supply / return. Purged. Closed the lines Vacuum @  4.614 T.

Wednesday, May 20, 2020, 11:47: Venting.

Wednesday, May 20, 2020, 13:12: Significant leak discovered on FS#3. Pressurized the lines to full pressure with water and waited 15 minutes. Small drops seen pushing out from the water block.

Removed old O-ring (Appeared to have a warp/bulge, very faint) Replaced with Sn C-Seal "Small Package" MIL-DTL-117H-TII C-E S-I / MIL-PRF-131K C-II.

T= 0.095"

D= 0.424"

Wednesday, May 20, 2020, 14:02: Roughing.

Wednesday, May 20, 2020, 14:08: BV1B open.

Wednesday, May 20, 2020, 15:28: Vacuum @ 1.242 T

Wednesday, May 20, 2020, 15:29: Open FS#3.

Wednesday, May 20, 2020, 15:31: Close FS#3 supply / return. Purged. Closed the lines Vacuum @  2.462 T.

Wednesday, May 20, 2020, 15:42: Start venting to 200 T. 

Removed Right coil line on FS#3 and blanked it off (G) (H).

Monday, May 25, 2020, 14:00: Roughing.

Monday, May 25, 2020, 14:02: BV1B open.

Monday, May 25, 2020, 15:16: Turbo pumps on.

Monday, May 25, 2020, 15:25: Ion gauge on.

Wednesday, May 27, 2020, 10:28: Ion gauge & turbo pumps off. 

FS#(G)(H) right coil line -  Lower G water block replaced leak checked / cleaned.

Line re-installed.

Wednesday, May 27, 2020, 12:56: Roughing.

Wednesday, May 27, 2020, 13:39: Turbo pumps on.

Wednesday, May 27, 2020, 13:47: Ion gauge on.

Monday, June 01, 2020, 06:47: Vacuum @ 5.12e-06T

Monday, June 01, 2020, 06:50: FS#3 opened. Vacuum @ 5.12e-06T.

Monday, June 01, 2020, 06:57: FS#2 opened. Vacuum @ 5.12e-06T.

Monday, June 01, 2020, 07:01: FS#4 opened. Vacuum @ 5.12e-06T.

Monday, June 01, 2020, 07:04: FS#5 opened. Vacuum @ 5.10e-06T.

Monday, June 01, 2020, 07:12: PS on

Monday, June 01, 2020, 07:15: FS#8 opened. Vacuum @ 5.03e-06T.

Monday, June 01, 2020, 07:16: Sources on.

Monday, June 01, 2020, 07:18: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min. Vacuum limits adjusted:

7.000e-06 Vacuum ok, increment when less than this value.

8.000e-06 Vacuum exceeds, the last increment on TGHT / TBHT is backed off.

Monday, June 01, 2020, 09:17: Halt, adjust. Continue Auto-ramping TGHT / TBHT to 350 / 200 A @ 2 A per min.Vacuum @5.19 e-06T

Monday, June 01, 2020, 10:37: Auto-ramping TGHT / TBHT to 400 / 200 A @ 2 A per min.Vacuum @ 6.29e-06T.

Monday, June 01, 2020, 11:05: Auto-ramping TGHT / TBHT to 450 / 200 A @ 2 A per min.Vacuum @ 6.70e-06T.

Monday, June 01, 2020, 12:18: Tripped* restarted* Auto-ramping TGHT / TBHT to 350 / 150 A @ 4 A per min.Vacuum @ 6.70e-06T.

Tripped as the TGHT / TBHT "good vac" interlock is at 7.30e-06T.

Monday, June 01, 2020, 17:10: Lowered TGHT to 325A to avoid a trip and continue outgassing. Vacuum @ 7.00e-06T.

Tuesday, June 02, 2020, 06:06: Manually tap TGHT up to 350 A.

Tuesday, June 02, 2020, 06:39: Manually tap TGHT up to 375 A.

Wednesday, June 03, 2020, 09:37: Manually tap TGHT up to 400 A. Vacuum, @ 6.68e-06T.

Wednesday, June 03, 2020, 09:44: Manually tap TGHT up to 400 A. Vacuum, @ 6.90e-06T.

Wednesday, June 03, 2020, 10:45: Tripped* restarted* Auto-ramping TGHT / TBHT to 400 / 200 A @ 4 A per min.Vacuum @ 5.53e-06T.

Friday, June 05, 2020, 06:19: Manually tap TGHT up to 425 A. 

Tuesday, June 09, 2020, 19:57: Auto-Cooling from 475 A to 0 A @ 1 A per min. 

Wednesday, June 10, 2020, 06:32: PS off. Ion Gauge off. Turbo pumps off. 

 Fault: 13334

Tuesday, July 28, 2020, 12:00: Leak discovered in ISAC Test Stand MB1 PS. Appears to be coming from hose barb soldered connection to heat sink of pass bank. Pass bank will need to be disassembled and heat sink soldered on a workbench.

Wednesday, August 05, 2020, 10:00: TP6 & TP2 off. IG6 off.

Wednesday, August 05, 2020, 12:20: RP2 swapped with a smaller roughing pump from the hot lab.

Wednesday, August 05, 2020, 12:25:  Roughing.

Wednesday, August 05, 2020, 13:53: Open BV2 to beam line chamber.

Wednesday, August 05, 2020, 14:21: Turbo pumps on.

Wednesday, August 05, 2020, 14:25: Ion gauge on. Turbo pumps at speed.

Tuesday, August 25, 2020, 07:07: Beam line side of the TS appears to have tripped? Open BV6 & BV2.

Tuesday, August 25, 2020, 07:15: Beam line side TP6 & TP2 on.

Tuesday, August 25, 2020, 07:16: Venting Chamber side

Trip appears to have occurred at 6am on Saturday.

Contacted MCR. Power bump occurred.

Installed Indium gasket on FS#2 - (C) water block / R- TGHT.

Tuesday, September 29, 2020, 11:23: Pressurize to 120 PSI at atmosphere.

LD: 0.0E-07 atm-CC/sec

Tuesday, September 29, 2020, 11:30: LD: 0.0E-07 atm-CC/sec checked & held on gasket / water block (C) for min minutes. No LD response.

Tuesday, September 29, 2020, 11:56: Roughing.

Tuesday, September 29, 2020, 12:28: TP1B on.

Tuesday, September 29, 2020, 13:10: TP1A on. IG1 on.

Tuesday, September 29, 2020, 16:10: Vacuum @ 8.66e-06T.

Tuesday, September 29, 2020, 16:13: FS#2 opened. Vacuum @ 8.48e-06T.

Tuesday, September 29, 2020, 16:23: Opened FS#5. Vacuum ok

Tuesday, September 29, 2020, 16:25: Opened FS#4. Vacuum ok

Tuesday, September 29, 2020, 16:27: Opened FS#3 Vacuum ok @ 8.13e-06T.

Monday, November 02, 2020, 08:46:

Large Vacuum spike noted 5:30 approx. Tripped TS. On tail end of the Nb#9 conditioning run. HV & heating were completed last week

Monday, November 02, 2020, 08:47: Vacuum @ 2.66e-06T.

Monday, November 02, 2020, 08:50: Closed and purged all the TS waterlines. Vacuum dropped to 1.31e-06T and continues to drop.

Monday, November 02, 2020, 08:59: Vacuum @ 1.05-06T.

Monday, November 02, 2020, 09:00: FS#5 opened. No response on vacuum.

Monday, November 02, 2020, 09:05: Vacuum @ 1.05e-06T.

Monday, November 02, 2020, 09:07: FS#2 opened. No response on vacuum.

Monday, November 02, 2020, 09:12: Vacuum @ 9.98e-07T.

Monday, November 02, 2020, 09:13: Opened FS#3. No response on vacuum.

Monday, November 02, 2020, 09:19: Vacuum @ 9.96e-07T.

Monday, November 02, 2020, 09:21: Opened FS#4. Immediate vacuum spike noticed. 1.69e-06T and climbing.

Monday, November 02, 2020, 09:26: Closed & purged all the waterlines. Vacuum dropped back down to 9.97e-07T.

Monday, November 02, 2020, 09:27: IG1 off. Turbo pumps off.

Tuesday, November 03, 2020, 10:10: Indium gasket on FS#4 checked w/ sniffer / LD w/ He. ok.

Tuesday, November 03, 2020, 10:30: 120 PSI on line FS#4 feed through (A) Center - TBHT. 0.0E-07 atm-cc/sec.

Tuesday, November 03, 2020, 10:45: LD @ 0.0E-07 atm-cc/sec. Purge the line.

Tuesday, November 03, 2020, 10:51: 120 PSI on line FS#4 feed through (B) Sides - TBHT. 0.0E-07 atm-cc/sec.

Tuesday, November 03, 2020, 11:08: LD @ 0.0E-07 atm-cc/sec. Purge the line.

Tuesday, November 03, 2020, 11:12: 120 PSI on line FS#4 feed through (A) Center - TBHT. 0.0E-07 atm-cc/sec.

Tuesday, November 03, 2020, 11:20: Purge lines. Leak not found w/ LD-Sniffer.

Tuesday, November 03, 2020, 11:30: Roughing.

Tuesday, November 03, 2020, 12:24: TP1B on. 

Tuesday, November 03, 2020, 13:04: TP1A & IG1 on. 

Tuesday, November 03, 2020, 14:26: LD: 0.0E-09 atm-cc/sec. Vacuum @ 1.75e-05T

Tuesday, November 03, 2020, 14:26: Open to the chamber. LD: 2.6E-07 atm-cc/sec. Vacuum @ 1.66e-05T.

Tuesday, November 03, 2020, 14:29: Purged FS#4 w/ HPA.

Tuesday, November 03, 2020, 14:33: LD: 2.5E-07 atm-cc/sec. Vacuum @ 1.59e-05T.

Tuesday, November 03, 2020, 14:38: Connect 120 PSI on line FS#4 feed through (A) Center - TBHT. LD: 2.3E-07 atm-cc/sec. Vacuum @ 1.59e-05T.

Tuesday, November 03, 2020, 14:58: LD: 2.1E-07 atm-cc/sec. Vacuum @ 1.40e-05T. Purge line.

Tuesday, November 03, 2020, 15:02: Connect 120 PSI on line FS#4 feed through (B) Sides - TBHT. 2.2E-07 atm-cc/sec. Vacuum @ 1.31e-05T.

Tuesday, November 03, 2020, 15:22: LD: 2.7E-07 atm-cc/sec. Vacuum @ 1.24e-05T. Purge line.

Tuesday, November 03, 2020, 15:27: Disconnected LD. Disconnected HE. Purged FS#4 w/ HPA. Test again in the morning. FS#4 - B appears to be the source of the leak.

Wednesday, November 04, 2020, 08:35: LD: 0.0E-09 atm-cc/sec. Vacuum @ 2.40e-06T

Wednesday, November 04, 2020, 08:37: Open to the chamber. LD: 1.8E-08 atm-cc/sec. Vacuum @ 2.40e-06T.

Wednesday, November 04, 2020, 08:41: Connect 120 PSI on line FS#4 feed through (A) Center - TBHT. LD: 1.4E-08 atm-cc/sec. Vacuum @ 2.40e-06T.

Wednesday, November 04, 2020, 08:46: LD: 1.4E-08 atm-cc/sec. Vacuum @ 2.40e-06T.

Wednesday, November 04, 2020, 08:51: Connect 120 PSI on line FS#4 feed through (B) Sides - TBHT. 1.5E-08 atm-cc/sec. Vacuum @ 2.40e-06T.

Wednesday, November 04, 2020, 09:01: LD: 3.0E-08 atm-cc/sec. Vacuum @ 2.31e-06T.

Wednesday, November 04, 2020, 09:07: Disconnected LD. Flushed lines w/ HPA. Vacuum @ 2.31e-06T.

Wednesday, November 04, 2020, 09:10: Open FS#2 & FS#3. Vacuum @ 2.33e-06T. Ok.

Wednesday, November 04, 2020, 09:11: Opened FS#4. Vacuum @ 2.42e-06T.

Wednesday, November 04, 2020, 09:18: Vacuum @ 2.42e-06T.

Wednesday, November 04, 2020, 09:19: IG1 & turbo pumps off. Purge waterlines.

Wednesday, November 04, 2020, 10:28: Venting.

Opened / inspected water block (B) and the line. ok. Swap out O-rings w/ new ones w/ vacuum grease.

Wednesday, November 04, 2020, 12:06: Roughing.

Wednesday, November 04, 2020, 12:57: TP1B on. 

Wednesday, November 04, 2020, 13:06: TP1A on. 

Wednesday, November 04, 2020, 13:16: IG1 on. 

Wednesday, November 04, 2020, 15:54: Vacuum @ 4.37e-06T.

Wednesday, November 04, 2020, 15:56: Opened FS#2 & FS#3. Vacuum @ 4.29e-06T. OK.

Wednesday, November 04, 2020, 15:59: Opened FS#4. Vacuum @ 4.29e-06T.

Wednesday, November 04, 2020, 16:12:  Vacuum @ 4.02e-06T & dropping.

Friday, November 06, 2020, 06:02: Vacuum @ 1.34e-06T ok. IG1 off. Turbo pumps off. 

TMSRP2 has been struggling since the power bump occurred Nov 18, 2020

Monday, November 23, 2020, 09:48: Open TMS:PV2.

Monday, November 23, 2020, 09:51: Close TMS:PV2. CG2B @ 0.515T.

Monday, November 23, 2020, 09:52: TMS:RP2 off.

After disconnecting the backing line to RP2, a lot of water poured out of the line. May have back tracked from the vapour off of RP1 and the leaks on the chamber side. Both are on the same line.

Monday, November 23, 2020, 13:06: TMS:RP2 swapped w/ old Tri-Scroll pump. RP2 on.

Monday, November 23, 2020, 13:23: TMS:TP6 & TMS:TP2 on.

Monday, November 23, 2020, 13:29: Switch over FL1  to FL2 on IG6 Filament. IG6 on.

Monday, November 30, 2020, 10:12: CG2B @ 0.131T. TP6 & TP2 off. IG6 off. Close PV2 & shut off RP2.

Monday, November 30, 2020, 10:31: RP2 large Tri-scroll pump swapped back out for the small Varian RP.

Monday, November 30, 2020, 10:32: RP2 on.

Monday, December 07, 2020, 11:06: Turbo pump TP6 on.

Monday, December 07, 2020, 11:11: Turbo pump TP6 up to speed. TP2 on.

Monday, December 07, 2020, 11:14: IG6 on.

Between feedthroughs F (magnet coil) and B (tube heater negative), I found a jumper with two resistors that has been burned up. I am not sure when this happened, but it would be good to review the overall setup of the service cap wiring in the new year.

The cable connected to feedthrough Q where the multipin sits also looks burned.

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

Tuesday, February 09, 2021, 13:43: DI water flow completely stopped.

Control room contacted. DI water loss confirmed.

Tuesday, February 09, 2021, 13:52: DI water flow returned.

Control room contacted. DI water loss due to a "seamless" pump change over for the DI water supply & mechanical services. The supply was transferred over to a new pump which overloaded and failed. They had to switch back over to the (old) pump. Mechanical services will still try to do the switch over again. Either tomorrow or the day after. Running the TS up to 580A until then is not recommended.  Control room to update tomorrow morning.

Fault# 13773: Cu-LCW south SA3-03 tripped on motor overload.

 Friday, February 12, 2021, 12:13: Since the collimator is not used, Carla and I installed a BNC short outside the cage. See picture.

Vacuum side

Tuesday, February 16, 2021, 13:42: The gas lines inside have been check. The inlet of the calibrated leak was not tighten properly and hence the large leak observed.  FIXED.

Tuesday, February 16, 2021, 13:42: The only leak remaining INSIDE the vacuum is the one on the FT side which for 200kPa is around 7e-6 atm cc /s. At this pressure, the undesired leak  is leak rate is around 1 %  of the one getting into the source.

Atmosphere side

Tuesday, February 16, 2021, 14:49: Some minor leaks in connection points around  1e-6 atm cc/s. Not much I can do without changing all connection to glands with metal gaskets.

Tuesday, February 16, 2021, 14:50: SV5 was leak check on its own, the gas goes through quite noticeable, no need to sniff with leak detector. SV1 leak checked and it works.

Tuesday, February 16, 2021, 14:52: Valves swapped, labels changed.

Tuesday, February 16, 2021, 15:17: Roughing.

Tuesday, February 16, 2021, 15:53: Turbos on.

Tuesday, February 16, 2021, 15:59: IG1 on

Tuesday, February 16, 2021, 16:29: IG1 @ 5.3e-5 and dropping. Already better than Friday/Saturday.

Tuesday, February 16, 2021, 16:53: IG1 @ 2.9e-5 T.

Wednesday, February 17, 2021, 16:53: IG1 @ 1.5e-6 T.

Wednesday, February 17, 2021, 16:53:  The Neon bottle seems to be empty. The leak on the lines were not as bad to have this happened. I suspect when squeezing the bottle I rotated the gauge enough to cause a leak there.

Wednesday, February 17, 2021, 17:00: Using a full nitrogen bottle, I confirmed that rotating the two-stage regulator causes a leak.

Wednesday, February 17, 2021, 18:00: Things look OK now. Water open. No response on vacuum. Will put power.

Wednesday, February 17, 2021, 20:00: Some items were timed out. Tried to recycle the PLC now all the items are red. Check tomorrow

https://elog.triumf.ca/TIS/Test-Stand/847

There was a previous DI CU-LCW  pump trip as per the above elog. The CU-LCW pump was configured this morning. The water pressure is set to 80 PSI as per the MCR. Any further can overload & trip the pump. 

Thursday, February 18, 2021, 10:55: Current flow rates & pressure read at the TS

DI water pressure as per the gauge on the supply side of the FS#2-5 manifold @ 85 PSI.

Noticeable flow rate reduction based on previous target conditioning logs. Previous pressure was around 100 PSI.

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).

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.

After not being able to get beam through the emittance meter. I diagnosed that the plates was not biased (reason yet unknow).

I swapped the cables from the plates such that it looks like the picture below. With this, I was able to take an emittance scan with the previous parameters.

Varying the optics affect the shape and position of the emittance so I believe this is a real signal.

Keeping this configuration until I finish my measurement.

Problem: Some devices turn off unexpectedly and sometimes without any obvious trigger. In the past, the only time this was an issue was during mass scans. Now with the automation of measurements, this is a major problem as it prevents longer parameter scans.

Thursday, August 05, 2021, 08:00: Kevin setup the CANBUS snooper by hooking it up on the magnet card loop port.

This device tracks the network so if any error happen it will be captured.

Thursday, August 05, 2021, 09:39: Test unsuccessful. No device turned off (I should be happy XD)

Thursday, August 05, 2021, 09:40: Will run the test another time

A PC was setup near the old magnet power supply (20210806_150334.jpg ). One of the software run smoothly but the other more useful one fails to connect to the usb adapter.

 Friday, August 06, 2021, 14:52: Fixed issue with  the usb adapter. With this, the CANBUS traffic can be store and inspected to catch any error on the communication (Annotation_2021-08-06_144737.png).

Friday, August 06, 2021, 14:53: Loggers are running. 

 Friday, August 13, 2021, 11:07: I forgot to input the feedback  from Kevin:

"33 errors out of 10,300,00 transaction seems statistically insignificant to me. "

From the devices tripped,

"Most of the tripped supplies are located on the front side of the rack, the original test stand controllers"

So maybe the issues could be

"Compatibility issues with the old and new? The newer supplies are all daisy chained, should we upgrade these to the tap boards?

Should the old controllers (original test stand appear to be MK supplies) be upgraded (do we have enough)?"

Saturday, August 07, 2021, 18:02: As mentions in previous entries, the FC0 current oscillates with no change on ion source parameters.

Hence, I came on-site to see if there was an issue with the hardware. Nothing obvious.

Last night there were some sparks that might have cause some issue.

RPMS are shifted toward negative current reading, similar to what we observed when testing TM4 sourcetray.

To rule out hardware issues I swapped the signals from FC0 to FC6 and visceversa.

When the output of FC0 goes to the FC6 controller the readout makes sense, and this behaves as expected with gas on/off.

When the output of FC6 goes to the FC0 controller there is no readout coming out. This suggest, at least to me, that some damage or error is happening on the DAQ side.

I will reboot the ioc expecting to see something.

Things sort kind of Ok but I don't trust it. FC0 reading makes a bit more sense. RPMS remains with an offset

Saturday, August 07, 2021, 20:31: The FC0 reading increase from 7.54e-11 A to 1.64e-8 A starting at 19:32. Also, the RPMS baseleves are not offset anymore, the -10 rd when using the 1 nA scale is back to 0 (normal)