Weekly update Target Hall schedule 2015-06-15. See attachment 1,2

 2015-06-19, Update the schedule on  the end of the week. See attachment 3,4

As per scedule TM2 containment box has been removed.

TM#2 is now in the south hot cell.

TM2 new source tray has been remotely transferred into SHC successfully. The transfer table has been moved back to TH within 1 hour.  I swiped the table and found about 150counts contamination. It is much better comparing to last time using since we removed this table out of SHC as quick as we can. The table will be cleaned with windex  after Target Hall is surveyed.

After bending and leak checking the new measurements from ground to HV on the TM2 source tray are:

Ground to C1+ 0.6645"

ground to heat shield 0.506

Window to mounting support plate - unchanged - over 0.80"

Maico, Chad and I conducted a leak check on all affected lines following tweaking of cooling line gaps. All lines pumped down to a level of 10^-9 torrliter/sec with no leaks detected with Helium.

I've taken measurements between HV and ground circuit on TM2 source tray as instructed.

At their closest points:

Heat Sheild to Ground Electrode 0.445"

Ground Electrode to C1+ 0.281"

Window to Mounting Support Plate 0.858"

Don Jackson brought to my attention some potential HV minimum spark gap issues with the source tray cooling lines.  It appears:

- The gap between the Ground Electrode cooling lines (ground) and Heat Shield cooling lines (HV) does not meet the spec of 0.668" MIN called out on the print

- The gap between the Window cooling lines (ground) and the Mounting Support Plate cooling lines (HV) does not meet the spec of 0.668" MIN called out on the print.

A copy of the tube bending drawing is attached with the spec highlighted in green.

The 0.668" MIN gap spec came from a check I asked Mark Llagan to perform to find the minimum gap when he was preparing the model for the tube bending drawing.  This gap was approved Jan 28th, 2015 by Friedhelm Ames on ECO-3587.

The source tray with the tubes bent as it is currently has been tested to 55 kV at the test stand by Anders, see:
https://elog.triumf.ca/TIS/Test-Stand/447

I am away June 12th to June 24th on vacation inclusive.  Isaac Earle is in charge of Remote Handling in my absence.

I am delegating Don Jackson responsible for resolving this TM2 HV issue, collecting and documenting the approval to proceed from the T/IS group leader with the source tray as-is, or to try to re-work the cooling lines and delay the project.

The source tray is NOT to be installed in the Hot Cell until this issue has been resolved.

Regards,

Grant

-- 
Grant Minor, M.A.Sc., P.Eng.
TRIUMF Remote Handling Group Leader
Nuclear Engineer
4004 Wesbrook Mall, Vancouver
BC, Canada, V6T2A3
gminor@triumf.ca
(604) 222-7359(604) 222-7359
http://www.triumf.ca/profiles/4557

Weekly update the schedule after some jobs have been finished in this week.

Dan and I connected TM4 in ITE. At this stage, water is supplied to TM4 only. We checked the TM4 water signals from electrical room.They are good. The turbo-pumps will be started today once the roughing is done.

TM#4 has been moved from the conditioning station to the east target station.

Final inspection took place with Pierre, Grant, Friedhelm and Anders present.

Two action items were raised:

1) check routing of 9 pin connector line

2) Check orientation of 9 pin water block

Chad pointed out concerns on clearances between a target and conductor block waterlines, possible optics tray alignment issues (that it had changed slightly from the initial alignment), and gap between steerer housing and ground electrode due to alignment.

Final alignment continued this morning.

Steerers have been aligned to 0.001 low, 0.000 left/right wrt master jig.

Optics tray required some adjustment as well and is now at:

Front 0.000 left/right, .001 high wrt master jig

Back 0.001 high, 0.000 left/right wrt master jig

Febiad coil conductor blocks have been reset with the master target jig as well...as they have been on and off during the test stand test.

A few components have been removed during the test stand test (such as feet required for tranfser jig) which I will now hunt down.

Otherwise i believe we are ready.

Final Alignment checks of the TM2 source tray took place today.

Mater Jig: Front - 0,0 Back - 0 left, right, .005 low

Tray: Front .001 High, .001 right Back - .001 right, .008 low

Which equals  Tray: front .001 high, .001 right back: .001 right, .003 low in comparison to the master jig which is both within spec and within reason to pre-soldering numbers.

Steerer was out significantly and currently sits at .003 high, .002 right wrt. master jig.

More refinement on the steerer tomorrow and check on the optics tray as well.

Source tray for TM2 has been moved to the alignment area by Dan and co.

This morning Dan removed the c-seals used during the test and he and I inspected the sealing surfaces to determine if they need to be cleaned...they do..trace indium was present on all blocks.

Surfaces will be cleaned before final alignment check.

Once the test stand was vented and all lines purged Anders Mjos and myself jigged up the water blocks and proceeded to remove the TM4 SiC#31 target used during the testing, Einso lens and steerer.  Once these components where removed we transferred the source tray to the transport plate and moved it to the alignment area.

TM4 has been connected at CS. CS HV cover is installed.I made a pair of new cooling lines for TM window cooling at CS. The TM4 containment box window cooling line is connected to the HVC spare circuit now. I checked water flow visually, and it is good. The TM4 is ready for conditioning.See attachment for window cooling modification.

PNG1 connected to PNG in service cap (as per David W)

 Wednesday, June 03, 2015, 12:59: Water on

Wednesday, June 03, 2015, 13:04: Staging enabled.

Wednesday, June 03, 2015, 14:02: Auto-ramping to 580 and 200 A at 2 and 1 A/min.

Wednesday, June 03, 2015, 14:03 : BIAS/EL/EE to 20/10/1.5 kV

ISAC operations monitored TCS from Wednesday to Monday

Monday, June 08, 2015, 08:55 : Started cool-down of target

Monday, June 08, 2015, 09:19: BIAS/EL/EE off

Monday, June 08, 2015, 09:32: EE configured to conditioning mode

Monday, June 08, 2015, 10:12 : TGHT and TBHT off

Monday, June 08, 2015, 10:25: BIAS/EL to 20/10 kV

Monday, June 08, 2015, 10:32: BIAS/EL to 30/15 kV

Monday, June 08, 2015, 10:45: BIAS/EL to 40/20 kV. Some bias sparking from ~39 kV

Monday, June 08, 2015, 13:40: BIAS/EL to 47.5/20 kV

Monday, June 08, 2015, 14:35: BIAS/EL to 50/20 kV

Monday, June 08, 2015, 14:39: BIAS/EL to 50/25 kV

Monday, June 08, 2015, 16:54: BIAS/EL to 53/25 kV

Monday, June 08, 2015, 17:03: BIAS/EL/EE off

Tuesday, June 09, 2015, 08:02: BIAS/EL to 30/15 kV

Tuesday, June 09, 2015, 08:07: BIAS/EL to 40/20 kV.

Tuesday, June 09, 2015, 08:13: BIAS/EL to 50/25 kV

Tuesday, June 09, 2015, 08:27: BIAS/EL to 53/25 kV 

Tuesday, June 09, 2015, 08:57: BIAS/EL to 55/25 kV  

Tuesday, June 09, 2015, 09:31: Power supplies tripped on IG2 vacuum after a spark at ~57.5 kV

Tuesday, June 09, 2015, 09:40: BIAS/EL to 40/20 kV.

Tuesday, June 09, 2015, 10:00 : BIAS/EL to 55/25 kV  

Tuesday, June 09, 2015, 10:09: BIAS/EL to 57.5/25 kV

Tuesday, June 09, 2015, 10:22: Sparking activity at 58 kV. Tripped TP2 and BV2. Reduced to 50 kV. Leakage current increased.

Tuesday, June 09, 2015, 10:33: Sparking activity at 55 kV. Reduce to 45 kV. Increased BIAS current limit from 0.25 to 0.30 mA

Tuesday, June 09, 2015, 10:41: BIAS/EL to 50/25 kV. BIAS RDCUR 0.17 mA, was 0.08 mA at 8:13 this morning.

Tuesday, June 09, 2015, 11:28 : Restarted TP2. Tripped.

Tuesday, June 09, 2015, 11:50:  Increased BIAS current limit from 0.30 to 0.35 mA

Tuesday, June 09, 2015, 11:55 : BIAS/EL to 54.5/25 kV for 5 min, 0.12 mA . Reducing to 40 kV for lunch break.

Tuesday, June 09, 2015, 13:07: BIAS/EL to 50/25 kV 

Tuesday, June 09, 2015, 13:27: BIAS/EL to 55/25 kV 

Tuesday, June 09, 2015, 13:40: BIAS/EL to 57/25 kV 

Tuesday, June 09, 2015, 13:49: BIAS/EL to 57.5/25 kV. Increased BIAS current limit from 0.35 to 0.40 mA

Tuesday, June 09, 2015, 14:30: IG1 tripped after spark. Controller seems to be broken. Forced IG1. Fault report submitted June 10th.

Tuesday, June 09, 2015, 14:58: BIAS/EL to 45/25 kV

Tuesday, June 09, 2015, 15:46: BIAS/EL to 55/25 kV

Tuesday, June 09, 2015, 15:55: BIAS/EL to 56/25 kV

Tuesday, June 09, 2015, 17:30: BIAS/EL to 57/25 kV 

Tuesday, June 09, 2015, 17:46: BIAS/EL to 57.5/25 kV 

Tuesday, June 09, 2015, 18:00: BIAS/EL to 58/25 kV

Tuesday, June 09, 2015, 18:30: No sparks for 30 min

Tuesday, June 09, 2015, 18:55: One spark observed. BIAS/EL off.

Tuesday, June 09, 2015, 18:56: Turbos stopped. Stopped water circuit.

Thursday, June 11, 2015: IG1 seems to work again after a power cycle. Controller tested with another IG. Closing Fault report

I revised the Target Hall schedule to July 21 2015. It is the time new TM2 with ZrC target started at ITW.

2015-06-04, Updated the schedule with   new PDF view. See attachments 3, 4

TM4 and CS turbo-pumps are started this afternoon. Everything is good so far.