Maico and I leak checked HS circuit after Chad installed the target. The circuit was a little bit difficult o pump down because of residue water moister inside. But once the moisture was pumped out, the pumping down was smooth and fast. The base leak rate 0.0xE-9 atm.cc/sec, base pressure 0.0xE-4 torr. Maico checked helium flow before the leak test. Then,He sprayed helium to all 3 VCR fiitings on target with 2 seconds on each one, He also flushed 10 seconds helium around the target. There were no any response during all these test time on leak detector.He checked the helium flow again after the test  and confirmed the helium flow.  The HS circuit is leak tight.

TM#4 with no target has been moved from the conditioning station to the south hot cell.

UC #7 has been moved from the south hot cell to the spent target vault, it was placed in pail #110 and put in slot 8B of the vault, it was 22.6mSv/hr upon removal from the hot cell. See attached PDF for vault details.

TM#1 with no target has been moved back to the south west silo from the south hot cell.

TM#1 with UC #7 has been moved from the south west silo to the south hot cell.

 The turbo pump, roughing pump, have been turned off and the valves for venting opened. The cooling package has also been turned off.

 This afternoon TM4 with the coil removed was tested with HV. The EINZEL LENS was first tested independently while the bias canbus was being repaired. The current on the EL looked stable at 25kV for 5 minutes. At 27.5kV the current becomes unstable and occasionally sparks. This voltage was held for 30 minutes but the current did not appear to be becoming more stable. Further extended testing would be required to determine if this can be conditioned out. At this point I would suggest the EL has a HV limit near 25kV.

The BIAS and EL were then brought up to 35kV and 17.5kV respectively. This voltage was held for 35 minutes with the BAIS only sparking twice. The module can most likely hold a higher voltage but for the next 2 runs does not require more than 35kV. Further testing was not completed due to time constraints. It is recommended during the shut down that TM4 is tested to its limits. The data from the testing has been attached.

 The base card in the canbus BIAS module was determined to be faulty. Dave Morris removed a card VECC to repair the conditioning station. 

as measured today in the electrical room by David and Anders

TM#1 with UC#7 has been moved from the ITW to the south west silo.

 There is something wrong with the BIAS canbus controller. It says that it is not alive and has timed out. I have tried unplugging it and plugging it back in but that has not resolved the problem as it normally does. I have contacted Dave Morris and am waiting to hear from him. I cannot HV test without this controller.

 The electrical connection have been made and cooling package was started at ~10:50am today

 The Turbo pumps are now running on TCS

With the coil line removed an electrical check was done on TM#4 at the South Hot Cell see attached pdf.

 The roughing pump has been started.

 TM4 without a source tray was moved from the SHC to the TCS.  All went well.

The C2 circuit (coil 2) water lines and blocks have been revoed from TM4.

Water block jig could not be used as the window water block connection was nowhere near fitting into the jig (IMG_1224 image below) and therefore caused an interference causing the rest of the blocks to not mate with the jig. A different tool that has never been used was implimented and sucessful (IMG_1227 below).

 Sorry about the picture numbering format...new format will be implimented next time.

 Yesterday I visually inspected the paddle wheel and noticed that it was spinning freely and constant. As the signal was intermittent replaced the coil at the back of the wheel only. This does not require access to the high active water. With the coil replaced the signal looked strong. I asked operations to keep and eye on it and advise if the problem has been resolved. I also discussed with David this morning and he informed me that this is the same procedure he would have followed.

The pre-separator-area blocks were replaced today by Bevan and Travis, with Grant present for photos and observation.

Photos are attached of each block replacement.

Some difficulty was encountered in replacing the "Layer #3" blocks (photo 9 attached).  An interference occurred between the outside of the west "Layer #3" block and an aluminum channel directly beside the rubber pad that supports the block.  The block was initially resting on this channel but slipped off, breaking off some concrete at the edge.   See photo 12 attached and notice crumbled concrete inside this channel around the area where the interference occurred. Photo 14 shows the damaged block edge.

It should be noted that when these two blocks are resting flat, there should be a gap between them (i.e. they should NOT be touching as shown in photo 9).

The containment box was removed from TM4 earlier this morning in preparation for removal of the C2 circuit water lines, their respective water blocks and conductor block.