TM#1 with TiC #3 post beam. See attached PDF for results.

TM#1 was electrically check with out a target see attached PDF for results.

I have inserted the test target for TM4 and the CS into the hot cell.

I had some concerns about the condition of the target which I have discussed with Pierre and he has cleared. Pictures are attached.

TM#4 has been moved from the SW silo to the south hot cell, move went well.

Electrical check performed on the CS Test Target #1 at the south hot cell. See PDF for details.

Chad and i did a leak check on TM4 heat shield circuit with installed dummy target at SHC today. The leak detector is pumped to 0.0xE-9atm.cc/sec.Chad sprayed helium twice on each  VCR joints .There is no any response had been found on the leak detector during each 45 seconds waiting time. The TM4 heat shield circuit with dummy  target is leak tight so far.  

ITW EX1 have been moved back to the west target station from the south hot cell.

On Monday, March 11 the containment box was removed from TM4 and a vacuum leak check preformed in an attempt to locate the leak in the ground electrode circuit.

Following Pierre's work plain helium was sprayed was the highest joint accessible towards the lowest.

A two second spray of helium was applied to the first joint (the reducer from the service tray to the line that goes to the service tray side of the water block connection), no response from the leak detector after 1 minute.

 two second spray of helium was applied to the braze joint of the servive tray side of the waterblock connection; almost immediate response from the leak detector (see David Wand for actual values for leak rate).

The inital joint at the reducer was rechecked to insure the response was not just a risidual slow response from the reducer joint and confirmed by no response after 2 miniutes that it was not.

The braze joint at the service tray block was then tested again with a two second spray and again almost an imediated response.

A meeting was conveined and decided to pressurize this circuit with air and apply snoop solution to the suspect area to try to identify wether the leak is in the braze joint or possibly c-seal...This will take place on Tuesday, March 12th.

Further attempts to localize the leak were unsucessful. The circuit was pressurized with 60 psi air and snoop solution was applied to both the braze joints and the mating surface between the two halfs of the water blocks. Unfortunately, no visible bubbles could be dectected.

This was reported to Grant and Pierre and it was decided to continue with removing one of the vcr gaskets from the optics cooling lines (on the same circuit) and replacing it with a gasket with a sector cut out to allow this circuit to be pumped out and eliminate any virtual leak type response. The feedthru at the service cap will be capped.

Areas that had snoop solution on them were rinsed with methonal.

A cursory inspection of the extraction column was preformed and some pictures of the back side of the mounting plate and surrounding area were taken as there was some interesting discoloration found in the area below the back of the 9 pin connectors.

Picutres of the snoop procedure can be found at https://documents.triumf.ca/docushare/dsweb/View/Collection-9994

The containment box has been re-installed and the window waterlines reconnected and leak checked.

The window lines did pass the leak check, however the leak dectoctor did not pump down past 5.8 x 10-9.

The front cover has also been reinstalled.

I have requested that the module have an electrical check before it moves as the containment box has been off as well as the water blocks being leak checked. Either one of these procedures could causes the water liunes and blocks to alter there position sightly which could cause as short...this is why I have requested an electrical check.

TM4 electrical test at SHC after windown and containment box back is done. Everything is fine.

It took a long time(more than 1 hour)   to pump down the TM4 window  cooling line during leak check time. The base leak rate could only be pumped to 5.8xE-9 atm.cc/sec.Base pressure is 0.0xE-4 torr which is bottom reading. Chad and i did the leak check at this base leak rate .No leak had been found. The window cooling line is leak tight at this stage. A pressure helium test will be fulfilled in conditioning station on this cooling line later.

Electrical check of TM#4 SiC#28 (RFQ Target) has been completed. It passed the standard electrical checks for the target part, but the electrical check for the RFQ part is suspect, see the attached PDF for the details.

Chad and I did the TM4 heat shield leak check yesterday at SHC. The leak detector was pumped to 4.6 xE-9atm.cc/sec, and 0.0xE-4 torr after 1.5 hours pumping. Chad sprayed helium twice on both VCR fittings. There is no response had been found during each 45 seconds waiting time. Since the module moved to ITE directly,we didnt have helium pressure test this time. I  would say thee heat shield circuit is leak tight. so far.

Ta#39 has been inserted into the hot cell in preparation for TM1 target change.

TM#1 has been moved from the south west silo to the south hot cell, move went well.

Ta#39 has been installed onto TM1.

Electrical check on TM#1 with Ta#39 installed at the south hot cell. Target passed the electrical checks, see attached pdf for details.

TM#1 with Ta#39 has been moved from the south hot cell to the conditioning station move went well.

New gaskets and fasteners have been inserted into the south hot cell in preparation for installing the dummy target onto TM3 tomorrow.