Note* target has a ring on the TGHT - Right leg. EE & PE placed. Target to HS OL - OK.

Wednesday, February 10, 2021, 09:37: Roughing.

Wednesday, February 10, 2021, 09:45: Bypass / Force applied on IG1 to test Anode.

Wednesday, February 10, 2021, 09:46: Anode @ 10 V. Ok.

Wednesday, February 10, 2021, 09:47: Anode @ 200 V. Ok. No current.

Wednesday, February 10, 2021, 09:48: Anode to 0V & off. Bypass / Force removed from IG1.

Wednesday, February 10, 2021, 10:06: TP1B on.

Wednesday, February 10, 2021, 10:46: TP1A on.

Wednesday, February 10, 2021, 13:42: Vacuum @ 9.08e-06T. open FS#5

Wednesday, February 10, 2021, 13:46: Vacuum increased to 9.70e-06T as well as the backing pressure increased. Turbo pumps off. Going to swap the assembly out completely however continue with the same LP-SIS oven.

Wednesday, February 10, 2021, 15:20: HS 44378-3 Installed w/ LP-SIS oven #44691-8. Roughing

Wednesday, February 10, 2021, 15:48: TP1B on. 

Wednesday, February 10, 2021, 16:02: TP1A on.

Wednesday, February 10, 2021, 16:11: Bypass / Force applied on IG1 to test Anode. Anode @ 200 V. Ok. No current.

Wednesday, February 10, 2021, 16:13: Anode to 0V & off. Bypass / Force removed from IG1. EZL & EE check ok. IG1 on for real.

Wednesday, February 10, 2021, 16:14: Vacuum @ 6.12e-05T & Dropping.

Wednesday, February 10, 2021, 16:16: FS#5 open. Both IG1 & the backing lines are pumping down quickly.

Contacted MCR. Reminder, mechanical services still intends to service the DI water pump. Constant DI water flow is not guaranteed.

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

Thursday, February 11, 2021, 00:13: : Anode to 10V. Auto-ramping TGHT/TBHT to 200/100 A @ 2 A/min

 Thursday, February 11, 2021, 09:03: Auto-ramping TGHT/TBHT to 400/200 A @ 2 A/min

From: Jas Uppal <juppal@triumf.ca>Sent: February 11, 2021 9:12 AM
To: Fernando Maldonado Millan <maldonado@triumf.ca>
Subject: Re: Cu-LCW water lines status for the ISAC test stand

Hi Fernando,

  There are no plans for Cu-LCW system to be switched off today.  I believe they are still working on correcting the issue that caused the trip two days ago.  Once it is corrected and we are ready to switch to the secondary pump, the switch over "should" be relatively invisible with possibly a slight drop in line pressure.

Jas Uppal 

 Thursday, February 11, 2021, 10:31: TGHT/TBHT at 400/200 A. Anode still at 10 V 

Thursday, February 11, 2021, 10:33: Auto-ramping TGHT/TBHT to 580/230 A @ 2 A/min

Thursday, February 11, 2021, 10:42: BIAS/EZL/EE @ 30/13/1.5 kV. 

Thursday, February 11, 2021, 13:42: Uncapable of holding HV. Maybe the new heatshield needs more time to outgas.

Thursday, February 11, 2021, 13:44: BIAS/EZL/EE @ 0.000 kV

Friday, February 12, 2021, 10:07: In order to trouble shoot the ISAC TS, I  let the sparks to continue. Initially, they occurred in the extraction electrode spark gap and were both visible and audible. However, they stop and the instabilitiy was present.

I rise the voltage again and let the spark happen for a longer period of time.

I saw how the collimator wire on the far back of the source tray was moving as if a hurricane was inside, which is very strange. I followed up the wire and I saw how it was sparking to something (see attached photo)

I say something because from the angle is difficult to say if it was going to the chamber itself or to the HS waterlines. Both scenarios are concerning

First of all the collimator is never biased and it if any case the jacket  (MHV cable) is on ground ground

In case the discharge happened from wire to the chamber, then the collimator wire was charging up, it is extremely important o note that the jacketed cable goes outside the box very close to one of the turbos.

In the other scenario where the discharge was happening from the wire to the HS waterlines, that is, HV to ground, the simply creating a clearance should be enough. In this case as well is relevant to know that this jackted cable leaves the farday cage.

I will create clearance from collimator wire to HS waterlines.

Friday, February 12, 2021, 10:33: BIAS/EZL/EE @ 0.000 kV

Friday, February 12, 2021, 10:35: Auto-cooling TGHT/TBHT to 0 A @ 4A/min.

Friday, February 12, 2021, 11:05: Discharge confirmed visually to go into the HS waterlines, (HV to ground) (see second photo attached)

Friday, February 12, 2021, 11:06: Inside the blue rack,  I could hear ticks that match the discharges, probably  the collimator PS is there. Will check later with things  off.

 Friday, February 12, 2021, 13:17: Turbos off.

 Friday, February 12, 2021, 14:36: Venting.