Chad and i did a leak check on TM1heat shield with UCx target on.The circuit are pumped  down to the bottom leak rate and base pressure is 3xE-3 torr on the leak detector. There are two VCR caps on heat shield circuit. Chad sprayed helium on both of them   ( tested individually,2 seconds every time ) . The test repeated 1 time.There is no response on leak detector during 45 seconds waiting time on both time.Chad flushed helium around the target for 15 second. During 1 minutes waiting time , there is no response on leak detector.The heat shield circuit is leak tight at this stage. It will be helium pressure  in CS later.

Entered south hot cell Wednesday and replaced the pre-filter air filter as well as the front two light bulbs. Also removed two bags of compressible garbage, one bag of metal, and of course the bagged air filter (as Joe M. expressed as interest in havung it).

Inital checks found approximately 4000 cpm on the cell side of the temporary Al. panel used during the cell entry, 2000 cpm on the tacky mats layed out beside the work area but nothing on the floor under the plastic that had been layed down for the job.

Chad

TM#4 with UO#3 has been moved from the east target station to the south hot cell for a target exchange. The move went well.

Chad and i did a leak check on TM4 heat shield circuit with new NiO#1 target installed. It took about 40 mins(much longer than usual) to pump down the circuit to leak rate 0.6x E-9atm.cc/sec and 0.0x E-4 torr o leak detector.

All vacuum lines and joints which connected to the leak detector had been helium sprayed and they are leak  tight.Chad sprayed helium on each VCR joints for 2 seconds every time. During 1min waiting time, there is no any response on leak detector. Chad repeated same test again for double checking and we got same result. Chad finally flushed the helium around the target heat shield for 10 seconds.we waited for 1minute and found no response on the leak detector. The heat shield circuit is leak tight at this stage. I will do a helium pressure test on this circuit when TM4 is in CS and under vacuum.

UOx was removed from TM4 yesterday and NiO#1 installed.

Video was taken.

Main stand-off insulators continue to deteriorate.

TM#1 with UCx#4 has been moved from the west target station to the south hot cell. Move went well.

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

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

Chad and i did a leak check on TM1 heat shield circuit with new Nb#7 target installed. It took about 5 mins pump down the circuit to leak rate 0.0x E-9atm.cc/sec and 0.0x E-4 torr on leak detector.

All vacuum lines and joints which connected to the leak detector had been helium sprayed and they are leak  tight. Chad sprayed helium on each VCR joints for 2 seconds every time. During 45sec waiting time, there is no any response on leak detector. Chad repeated same test again for double checking and we got same result. Chad finally flushed the helium around the target heat shield for 10 seconds.we waited for 45minute and found no response on the leak detector. The heat shield circuit is leak tight at this stage. I will do a helium pressure test on this circuit when TM1 is in CS and under vacuum.

Nb #7 was installed and tested today.

Inside face of the containment box cover was cleaned with methanol and a baseline picture taken in an effort to track deposits and marking as requested bty Anders.

TM#1 with Nb#7 attached was electrically checked at the south hot cell yesterday, see attached pdf for details. Some notes about this test the oven to the 60kV common is 2Mohm this was noticed on the target prior to installation on the module, and the 60kV common to chassis is low at 874Mohm (low as in a non infinite value).

NiO#1 was removed this morning.

UCx#5 was inserted into the hot cell around 1 pm, installed and leak checked and ready to go to the conditioning station 1:40pm

did have a little trouble with the 9 pin connector. It had to be lossened to get it to mate properly. It was le-tightened once the proper fit was achieved.

Attached are pre-removal pictures of NB#7 and the inside face of the containment box cover before cleaning.

TiC#3 sucessfully installed and ready for leak and electrical check.

TM#1 with TiC#3 target has had the electrical performed on it. See attached PDF for details.

Chad and i did a leak check on TM1(Lp-TiC) heat shield water circuit at south hot cell. There is no leak had been found on it. The circuit  is leak tight at present. I will do  helium pressure check on this circuit at  conditioning station once the vacuum is good enough.

Nb#7 was dismantled and ready for inspection.

UCx #5 has been removed from TM4. The left oven leg is indeed broken.

Target has been placed in a pail with an argon feed.

TM4 was successfully moved from the South Hot Cell to the South-West Silo remotely by Grant Minor, with help from David Wang and Don Jackson.  The move was without problems.  See ISAC Work Permit 2012-12-04-1.

The target was inspected today.

It was found that the target tube had broken on both sides of the centre block in the region that contain target material. The Ta-foil heat shield was removed from the let side tube to allow inspection.

Photos can be found on DocuShare:
https://documents.triumf.ca/docushare/dsweb/View/Collection-9357