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

Pins connected source tray side: 1, 4, 5, 6

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

Tuesday, May 07, 2019, 15:20: Roughing.

Turbo pumps switched on w/ Ion gauge around 4pm.

Wednesday, May 08, 2019, 08:05: Multi-meters tested & connected.

Wednesday, May 08, 2019, 08:09: Power / sources on.

Wednesday, May 08, 2019, 08:13: RGA on

Wednesday, May 08, 2019, 08:14: Auto-ramping TGHT / TBHT to 575 (580) / 230 A @ 2A per min.

Wednesday, May 08, 2019, 08:30: Voltage reading off on TBHT? Connection to source tray side is wrong.

Wednesday, May 08, 2019, 08:40: Halt auto ramping. Manually tap down TBHT / TGHT

Wednesday, May 08, 2019, 08:42: Sources /  RGA off.

Wednesday, May 08, 2019, 08:43: Turbo pumps off.

Wednesday, May 08, 2019, 10:40: Roughing.

Wednesday, May 08, 2019, 11:01: Turbo pumps on.

Wednesday, May 08, 2019, 13:10: Power / sources on. Vacuum @ 4.37e-06T

Wednesday, May 08, 2019, 13:19: Auto-ramping TGHT to 575 (580) A @ 2A per min. However, the vacuum is not quite ready. Increment value set to 3.000e-06T to ramp. Once the vacuum is reached, the heaters will start to ramp automatically.

Wednesday, May 08, 2019, 14:23: Auto-ramping ongoing successfully. TGHT @ 32A +. Vacuum @ 2.66e-06T

Thursday, May 09, 2019, 07:05: Auto-ramping TGHT to 575 (580) A @ 2A per min from 400 A.

Monday, May 13, 2019, 08:00: TSG:TP1A appears to have tripped over the weekend. (Around 7pm Saturday)

Closed IV4 / reset. Reset TP1A. Reset BV1A.  Turn on TP1A.

Monday, May 13, 2019, 08:32: TBHT & TGHT switched back on.

Ramped down around 10 PM.

Tuesday, May 14, 2019, 07:10: Power / RGA off.

Tuesday, May 14, 2019, 07:12: IV4 closed, Ion gauge & turbo pumps off.

Tuesday, May 14, 2019, 08:35: Waterlines purged. Venting.

Wednesday, May 22, 2019, 13:44: Calibration Confirmed.

New Masscorr setup:

http://isacwserv.triumf.ca/onlylocal/isactdata/save_restore/masscorr/2019-05-22-13-42%20ZrC%238

TM4 source tray left in test stand over weekend, just the rouging pumps on. Ready to be removed Monday morning.

Monday, June 10, 2019, 06:35: Venting - Aaron S.

Monday, June 10, 2019, 09:30: TM4 Source Tray removed - To HC area.

Monday, June 10, 2019, 13:00: Optics Tray removed.

Megger'd @ 1000V on EZL and Collimator. Passed. Open it.

Monday, June 10, 2019, 14:34: 3 cracked insulators found. 1 quite broken on the threads (see attached pictures). Replaced insulators & re-assembled optics tray.

Megger'd @ 1000V on EZL and Collimator. Passed.

Thursday, June 13, 2019, 14:23: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. EZL current @ 61 uA. EZL appears to be fixed. :)

Thursday, June 13, 2019, 14:04: Spare TGHT PS installed /  tested. The old one is to be sent out for repair.

Wednesday, June 19, 2019, 17:13  Ferran and Fernando tested the 9-pin connector to have a reading on a thermocouple following the connections used by Aurelia (see elog 721).

Wednesday, June 19, 2019, 17:24: Test succesful!

Friday, June 21, 2019, 14:48: Roughing.

Friday, June 21, 2019, 15:18: Turbo pumps on.

Friday, June 21, 2019, 15:31: IG1 on.

Friday, June 21, 2019, 15:42: Vacuum@9.31e-5 T

Friday, June 21, 2019, 15:51: RGA switched on.

Friday, June 21, 2019, 16:30: Luca wants to put heat shields on his target. Aborting pumping. 

Friday, June 21, 2019, 16:57: IG1 off 

Friday, June 21, 2019, 16:57:  Turbo pumps off.

 Friday, June 21, 2019, 16:57: RGA switched off

AS

Monday, June 24, 2019, 07:18: Restart TP1A (Timeout) Global Reset. Restart again.

Monday, June 24, 2019, 07:29: TP1A to speed. Monitor. Vacuum @ 4.31e-06T

Monday, June 24, 2019, 07:31: Restart RGA.

Monday, June 24, 2019, 08:57: Waterlines opened. No response on RGA. Vacuum @ 3.23e-06T.

Monday, June 24, 2019, 09:03: Power / sources on. (No HV)

Monday, June 24, 2019, 09:04: TGHT / TBHT / Coil PS ready.  Vacuum @ 3.23e-06T.

Monday, June 24, 2019, 10:09: Auto-ramping TGHT / TBHT to 150 / 75 A @ 2 A per min. 

Monday, June 24, 2019, 10:57: Auto-ramping was halted @ 35 A. Coil increased. TGHT, TBHT, Coil brought back to 0 A

Monday, June 24, 2019, 10:58:

 Monday, June 24, 2019, 11:01: Auto-ramping TGHT / TBHT to 150 / 75 A @ 2 A per min. Manually ramp coil to 150 A @ approx the same rate.

Monday, June 24, 2019, 12:20: Halt at 140A TGHT / Coil. Vacuum limit?

Monday, June 24, 2019, 13:23: Increasing good vac limit. From 3e-6 to 4.5e-6 T

Monday, June 24, 2019, 13:29: Auto-ramping TGHT / TBHT to 300 / 120 A @ 2 A per min. Manually ramp coil from 140 to 150 A @ approx the same rate.

Monday, June 24, 2019, 13:37

 Monday, June 24, 2019, 14:4: TGHT @ 270 A. Vacuum limits reached 3.05e-06T. Gradual out-gassing w/ cont'd auto ramp.

Tuesday, June 25, 2019, 07:53: Auto-ramping TGHT / TBHT to 550 / 120 A @ 2 A per min.

Tuesday, June 25, 2019, 08:34:

Tuesday, June 25, 2019, 10:09: At approx 9:45am a vacuum spike tripped the test stand. All heaters at 0 A. Power supplies checked.

Tuesday, June 25, 2019, 10:11: TGHT / TBHT / Coil @ 6 A. Bumped up manually.

Tuesday, June 25, 2019, 10:12: Auto-ramping TGHT / TBHT to 300 / 100 A @ 2 A per min. Manually ramp coil to 150 A.

Tuesday, June 25, 2019, 11:01: One sheet on the target leg is shining red.

Tuesday, June 25, 2019, 11:01: Aborting the ramping.

Tuesday, June 25, 2019, 11:08 :

Tuesday, June 25, 2019, 11:18: Continue auto ramping

Tuesday, June 25, 2019, 11:37: Auto-cooling @ 12 A per min. Coil tapped down manually.

Tuesday, June 25, 2019, 11:58: Sources off. RGA off. Power off.

Tuesday, June 25, 2019, 11:59: IG1 off. Turbos off.

I opened the test stand because I forgot to install tantalum heat shields around the target. Everything was reinstalled as before (with heat shields). I could turn on the TSGTP1B but TSGTP1A does not turn on for some reason. I tried multiple times opening/closing its valve (BV1A) but the pump never starts.

Will keep pumping over the weekend with TP1B only.

Monday, June 24, 2019, 15:25: Current quadrupole polarities:

Monday, June 24, 2019, 15:35 : The polarity on TMS:Q3 is reversed. The top and bottom poles should be at a positive voltage similar to TMS:Q4, however a negative tagged cable is connected to it.

Monday, June 24, 2019, 15:39 : Swapping the cables on TMS:Q3.

Tuesday, June 25, 2019, 16:15: While inspecting the 9-pin connection with Ferran, it was noticed how two braided cables were burnt out pretty bad to the point they were separated in half (see attached pictures).  Additionally the plastic insulator for the anode wire was melted.

Tuesday, June 25, 2019, 16:30: Braided cables need to be changed and anode wire redone. 

Tuesday, June 25, 2019, 17:16: Wondering if this happened during TM4 source tray conditioning given the following entries in the elog (entry 725):

Monday, June 03, 2019, 09:51: BIAS down to 50 kV. Burnt plastic smell lingering. Wait* 

Tuesday, June 04, 2019, 10:29: Note* Minute fluctuations of Anode current have ended after the spark. Also slight 'Burnt' smell noticed around the test stand area.

The wiring on the top of the test stand was burned, see entry 737.

Probable cause of this is as follows:

Coil lines are connected by a wire to HV common, the 9-pin feedthrough etc to maintain same voltage on all the insulator tops. This is also directly connected to the extraction electrode spark gap. When this sparks, it momentarily changes the potential in that line (normally HV common) which then can make this path the best route for current from the coil to return to ground.

See attached diagram.

Best solution to this problem is to disconnect the high current section from the low current section, and attach each separately to HV common.

Other possible improvements to wiring:

1. Remove jumpers between positive coil lines (and neg. coil lines) since these feethroughs are physically connected by the copper pipe.

2. Add a resistor to the jumper between coil - and TBHT - since this will eliminate all possibility of current flowing between the two.

3. Add a resistor in line where the high current section is connected to HV common to avoid possibility of current going through jumpers.

See elog 737 

Thursday, June 27, 2019, 09:45: The cables showing burnt marks were changed with new ones on Wednesday 26th. The grounding cables were insulated with yellow heatshrink. The anode wire connection was redone.

 Tuesday, July 02, 2019, 18:24: A blind is installed  on the FEBIAD gas line (see attached picture)  to rule out the possibility of  gases entering the TIS.

Screws instead of rivets on target leg. Insulator changed.

Thursday, July 04, 2019, 15:14: Roughing

Thursday, July 04, 2019, 16:00: Turbos on.

Thursday, July 04, 2019, 16:12: IG1 on. RGA on

Friday, July 05, 2019, 08:12: Waterlines opened. No response on RGA. Vacuum ok @ 4.57e-06T.

Friday, July 05, 2019, 08:14: Power / sources on.

LE,FM

Friday, July 05, 2019, 10:00: Autoramping TGHT/TBHT to 250/100 A @ 3 A/min. Vacuum limits change to 5e-6 T and 5.5e-6 T. Vacuum ok @ 4.2e-6 T.

Friday, July 05, 2019, 11:42 :

Friday, July 05, 2019, 11:45 : Auto ramping TGHT/TBHT to 300/150A @ 3 A/min.

Friday, July 05, 2019, 17:32:

Friday, July 05, 2019, 13:56: Source/Optics on

Friday, July 05, 2019, 14:38: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. One spark while bring the BIAS to 30 kv around 27.5 kV. IV4 opened.

Friday, July 05, 2019, 17:32: BIAS / EE / EZL @ 0 for the weekend. Heater will be left on.

FM

Monday, July 08, 2019, 15:12:  BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Monday, July 08, 2019, 18:59: BIAS / EE / EZL @ 0.00 kV

Tuesday, July 09, 2019, 13:42: TBHT/TGHT @ 590/230A.

Tuesday, July 09, 2019, 13:49 BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Tuesday, July 09, 2019, 14:04: Dipole magnet not responding. Cycling the PS on EPICS didn't work. Cycling the PS directly worked.

Tuesday, July 09, 2019, 17:28: BIAS / EE / EZL @ 0.00 kV

Thursday, July 04, 2019, 15:00: TBHT insulator was swapped out on the source tray side. 

The old one is very chipped.

(see entry 742)

p2n target heated over the weekend after the connections between the bottom target legs and the copper connector has been modified from rivets to M3 screws. Target hold current nicely with no major voltage spikes.

The plan now is to cycle the current heating few times to "stress test" the target.

Monday, July 15, 2019, 15:54 : TBHT high current cables moved to Coil feedthroughs.

Coil high current cables moved to TBHT feedthroughs.

Resistor across  Coil feedthroughs E and F are now moved between TBHT feedthroughs A and B.

Tuesday, July 16, 2019, 09:00

A braided cable between F and H was changed due to the burnt aspect it had. Most likely this cable was burnt along the previous ones (see entry 740) but since it was uniformed blacked and not broken I didn't noticed it.

Resistor/Varistor between TGHT and TBHT removed.

Tuesday, July 16, 2019, 10:27: The idea of this run is to have the full 600 A from TGHT and the full 600 A from TBHT.

This will done based on the rewiring done previously (see entry 745)

Tuesday, July 16, 2019, 12:16: Jumper cable F-H burning while target was at 600 A total. Ramp up aborted and auto-cooling started to remove the jumper.

Jumper removed.

TBHT cables on both positive coil FT.

Jumper E-G removed.

High current cable connecting F-H.

Tuesday, July 16, 2019, 16:49

Current ramped up to 300A + 300A on TGHT and TBHT in parallel, for an equivalent of 600A on the target. No burn to anything noticed, PS ramping nicely together. Stopped ramping up and started ramp down for the night.

After submitting a fault report (FR - ISAC Fault 12461) a Work Permit was issued (WP - C2019-07-19-1),

Controls tunnel the faulty signal to another ADC by removing signal no longer used at the Test Stand.

Test successful with a constant current power supply in the range 1 nA-40 nA.

TBD: does this work with beam?