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

TM#4 electrical check with Ta#42 attached post beam at the south hot cell.

TM#4 with Ta#42 has been moved from  the west target station to the south hot cell.

All of the serviced F-308's have been moved to the South Hot cell area.

All the F-308's can back from being certified at Nordion.  All of the F-308's have been serviced and are ready to be filled with spent targets.

All targets in the vault have been assayed and measured. Results will be posted soon.

Results of assay are now attached in a new layout.

All targets in the vault have been assayed and measured. Results will be posted soon.

Anders and I opened the HV cover in ITE and did  a visual check inside ITE HV  cover and top of TM3.Bill was with us and took the pictures. There was nothing obviously wrong when we opened the HV cover in ITE. We disconnected TM3 high current cables from ITE. Then we did an electrical check on TM3.The TM3 was good and passed megga test (465Mohm at 500V). The module was good and was separated electrically from the ITE at that moment. Then, we went back to electrical room and measured the resistance between bias and ground with ground bar opened and power supply disconnect. It was still shorted at that moment .We thought the short is located inside HV chase between electrical room and ITE. Then, we went back to ITE again and reconnected TM3 back to ITE. We wiped two blue nylon insulators between bias and ground, and no obviously spark track or dirty on them. We put HV cover back in ITE locked area, and went back to electrical room again.We decided to do a final electrical check there. We thought the short should be still there and we just want to confirm it . But this time the short  is gone. Everything goes back to normal.   The short disappeared and We test bias to 5KV and the current looks normal now.  

Friedhelm Ames commented to me that there appears to be a short between High Voltage and Ground at TM3 at ITE.

Friedhelm, Anders and I initiated a survey by Andrew from RPG, and entered the Target Hall at approximately 5pm to visually assess the HV cover at the MAA.  There was no clear indication of a problem.  We opted to wait for David to return as we weren't sure exactly what we were looking for.

Friedhelm and Anders confirmed in the Electrical Room that the short is in the Target Hall.

ITE TM3, entrance module, and 2A3 window flange seals have been leak checked this morning after 2 new seals replacement.The LD base leak rate was 0.0xE-9 atm.cc/sec,  base pressure was 0.0 XE-4 Torr. I sprayed lots helium around the TM3, entrance module and 2A3 flange seals. No any response had been found on LD during the  spraying. All three flanges are sealed perfectly now.

ITE entrance module flange seal had been replaced yesterday.The flange and the seal groove were cleaned with Acetone before the new seal is installed. See pictures

The entrance module was out a new seal went in and then the entrance module went back, and then TM#3 went back. So all modules are now back in place in the east target station.

ITE entrance module has been disconnected and the lifting yoke is installed for module move. See attached pictures.

ITE target module flange seal has been replaced.The flan surface and the o-ring groove have been cleaned with Acetone before the new seal is installed. See attached picture.

TM#3 with TiC#4 has been moved from the east station to the south west silo.

The 2A3 window now has a lid, and lift yolk on it and it has been installed in the spent target vault in spot 2A. The lid is a normal unmodified and has no sealant on it.

Helium leak checked 2a3 window after installing using remote line:

- There was a leak found between the target and entrance module at the target pit, rate of 9E-6 atm-cc/sec.

- One test performed with the remote helium line to the window. There was a response but the leak detector was located above the window access channel, drift cannot be ruled out.

- 3 more tests performed with vacuum group, with leak detector relocated farther away from ITE and isolated with plastic. 2 tests using remote line had no response. One test done with a wand through 2a3 wall penetration had a response of 3.2E-9 atm-cc/sec (not using remote line).

Vacuum group (D. Yosifov) comments that due to the much larger leak at the top of the tank he cannot say with confidence the response seen is a leak at the window (due to leak at top) but if there is, a tolerable leak rate.

PDFs of temperature and flow traces are available on DocuShare

Monday, April 28, 2014, 09:27. p+ off since 8:20

Tuesday, April 29, 2014, 09:28: p+ 30 uA

Monday, May 05, 2014, 10:49: p+ off since 8:39
(Downloaded data and updated traces on DocuShare)

 Wednesday, May 14, 2014
(Downloaded data and updated traces on DocuShare)

TM#3 with TiC#4 has been moved from the conditioning station to the east target station.

I reconnected the entrance module back to the ITE station. All diagnostic cables, turbo- pump, air lines, water lines on ITE entrance module and BL2A3 window are connected back.