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.

TM3 has been connected in ITW. See attachment for checklist.

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.

TM2 with Ta#target has been moved from SHC to ITE. the move is smooth.

 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.

TM3 window line has been leak checked after containment box removal and installation for insulator installation on water cup C.   No leak.

10 pins lectrical check result after insulator is installed on water cap C.

pin 14 to 60kv bias has 20 Kohm @250V Megga check. The rest check on ohmmeter and megga @250 are either OLor over 25Mohm which are good.

 September 23, 2024 - C. Fisher 

• Containment box removed
• Insulator installed
• New window line VCR seals installed
• Dropped bolt from TiC#8 removed
• Containment box reinstalled

September 23, 2024 - A. Tam

• Containment box cover reinstalled 

Photos attached 

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

TM3 was moved from silo to SHC with no target. Move successful.

An electrical check and leak check had been done after new target UCx47 was installed on TM3 in SHC. see attachment pls.

TM3 was moved from SHC to TCS with UCx#47. The move was smooth.

 November 26, 2024 - Aaron Tam 

Handover from TPO and inspection

• Completed
• Some modification to the center Inner-Outer conductor had to be made (hole enlarged as tab was slightly short)

Target Insertion:

• Successful 

Target Mounting:

•  Upon fully seating UC#47 on service tray locating pins, the gas line VCR gasket came off 
  • Operator doesn't have line-of-sight to this area, so there has to be healthy clearance (Foreshadowing) 
  • Gas line VCR gasket reinstalled using manipulators  

• 2nd seating of UC#47 on service tray locating pins, the gas line VCR gasket came off again
  • Some alignment interference with the gas line coupling is the cause of the gasket falling off during placement (photo attached)
  • Gas line on service tray was loosened, raised to highest position and fastened (Photo attached)
  • Failed to re-install VCR gasket (Plastic separated from gasket material)
• Target removed from Hot cell to reinstall gaskets and make modifications to the gas-line coupling
  • Gas line coil plastically deformed to give less of a spring action so the coupling can stay down under friction until it is time to couple
  • Target carefully inserted into hot cell without disturbing spring/friction of gas-line coupling. 
    • This had to be repeated several times. Once for the waterline gaskets coming off, and a few other times to insert the target/tray without disturbing sprung coupling
• Target mounted without issue after the above steps successfully 

Gas and Water Services:

• VCR connections coupled 
• Leak test passed
  • leak test faster today because module had been left in silo for a long time to dry out. 
• Gas line no-longer needed, so was not checked

Electrical Services:

• Conductor bolts installed
• All bolts (including mounting bolts) checked for fit with mirror
• Coil conductor bolts torqued to at least 130inch-lbs 
• Electrical test completed 

Containment box panel reinstalled 

Cleared area around module for craning out. 

TM3 with new target UCx#47 was connected in ITE right after be moved from TCS. 

 5 Shielding Blocks have been transferred from ITW to ITE. MAA is secured after moving.

ITE primary and secondary vacuum vessel leak check for 2025 shut down have been done. No leak.  The TM3 waterlines helium pressure test will be done at TCS when module is there.

TM3 water lines helium pressure test  are done. 70 psi helium 3 minutes to each line( except HS which has no target on it ) . leak detector base leak rate :0.0Xe-9 atm.cc/sec. No leak on all tested water lines.Helium were purged out after test. and 60 psi nitrogen were filled in lines for storage.