On Friday October 11th TiC#8 and Ta#67 were place in the spent target vault in Tray 8. See attached PDF for details. 

 TM3 with replaced target TiC#8 has been checked on SHC before moving to ITW. Pls see attachment

With TiC # 8 installed, TM3 has been moved from SHc to ITW. The move is smooth.

With the new TiC#8 target installed on TM3, there was a ~7kOhm connection between TGHT/TBHT (A/B/C/D) and HV common. The standard electrical check on the module showed standard values, so it was assumed the problem was inside the target.

Started removing bolts/water connections one by one to see if any of them had an effect on the measurement. Found that disconnecting the multipin on the target from the mating connector on the source tray resolved the issue. Determined that the only way this could happen is if a spark cut through the insulation covering the multipin wires. Because of the way they are routed, they can touch the water lines and they are definitely touching waterline C, TBHT-. We do not typically check continuity of multipins to all water lines, just to HVC, so did not see this in the standard electrical check. Measurements verified that pin 2-4 was touching water line C, creating a short from TGHT/TBHT to HV common when the multipin connector is attached, since the pins are shorted to HVC inside the connector when they are not used.

Issue was solved by removing the target into the ante room, removing connector 1 all together since it was not used, and removing the grounding on the other pins, leaving only pin 2-2 connected for the anode.

In future we will change the IGLIS wiring so pin 2-4 is not used, and redesign the cable routing so it cannot touch the blocks. For the immediate term, we will add to the electrical check a check of each pin to TBHT/TGHT/COIL.

 TM3 is disconnected and all water lines are purged/refilled with 50psi Nitrogen. Pls see pics attached with.

TM3 has been moved from ITW to S-W silo. The move is smooth.

 TiC#8 HP FEBIAD removed from TM3

Target sitting in SHC

1 Coil Conductor bolt fell under source tray 

Photo Dump uploaded

Tm3 has been moved  from silo to SHC. The move is smooth.

 TiC#7 Target Removed from TM4. - Photos attached 

TiC#7 Currently sitting in SHC waiting for disposal 

TM4 and TiC#7 target electrical check and HS leak check at SHC after target installation have been done.  all results are good. I will attach the checklist when printer is back to work.

TM4 HS line was helium pressure tested at TCS this morning. No leak. Also i leak checked TM4 top all air to  vacuum seals at TCS. Everything is good.

TiC #7 is a febiad target.TM4 top has been configured for febiad target. checked pin 2-2 to bias, target ,and chassis at 250V. they are all OL.  

TM4 has been moved from SHC to TCS. The move is successfully.

 TM4 with TiC#7 was connected in ITW, all TPs are running at full speed.

 TM4 with spent target TiC#7 (dead) was disconnected in ITW and ready to move to TCS.

Tm4 has been moved from ITW to SMP. the move is successful.

TiC#7 failed after two weeks of operations - measurements in the electrical room indicated that the negative side of the CHT was broken (35kOhms to the rest of the target). This was likely due to a large number of proton trips during this target run. At every trip I could see the CHT voltage getting higher and more unstable. This cahnge in voltage was reflected in the unstable anode current and fluctuating RIB beam intensity, as a direct result of the fluctuating power on the CHT. The break was confirmed in PIE, loosening the screws caused the target container to come off without the cathode. Otherwise nothing unusual was seen. The anode wire connections seem very robust, dragging the target around with the multipin disconnected, flipping it up and down, etc and the anode wire stayed attached. Though we saw lots of outgassing on this target, things looked the normal level of dirty. There was no buildup between PE and EE.

 TIC#7 was placed in pail #294 and then moved from the south hot cell to the spent target vault spot 4B. It was 82.3mSv/hr when removed from the SHC. See attached PDF for details.

 TM2 with TiC#6 was checked on SHC, see pic attached pls.

TM2 HS line helium leak check is done. leak detector base LR 1.8xE-8atm.cc/sec.  helium pressure 70 psi. 5 minutes test. no change on LD leak rate.    I spray lots helium to gas line adaptor and fittings. No leak.has been found  at this base leak rate level.  Since the TCS MP1 has some  issue ,this time the base leak rate on LD only can get to 1.8Xe-8 atm.cc/sec at this moment instead of 0.0xE-9.  The low E-8  level is not perfect, but  i  have no concern on it.

 TM2 with TiC#6 was connected in ITW (FEBIAD), turbo pumps were started successfully.

 Gas lines pumped down at electric room for TM2 at ITW is done, leak rate 0.0e -8 <1.0e -3 T P pressure