UCx#29 has been removed from TM$ and placed in a pail backfilled with argon until it can be moved to the storage vault.

UCx#28 has been removed from TM4. Guard screws on 5(10) pin connector had to be removed to get the connector to un-seat properly for removal.

Dummy Ta target has been removed from TM4 and UCx#27 installed

UCx#19 has been installed onto TM4. High current fasteners torqued to 130 in lbs. Has been leak and electrical checked and is ready to leave hot cell.

On Thursday, January 26th UCx#18 and Ta#50 were inspected and packaged into spent target pails, move to storage vault.

UCx#14 has been removed from TM4 and Ta#47 installed. No marks on 9 pin connector on UCx#14.

UCx#14 installed onto TM4. High current fasteners torqued to 130 in lbs.

UCx 29 TM4 post run electrical check is done before target is removed. Everything is normal on measurements.

See attachment

TM4 HS Leak check result is good . No leak. electrical check after target installation: Bias to chassis 550 Mohm. Coils are shorted each other and shorted to 60 KV bias. ABCD to 60KV bias 500V Megga measurement are 100M at least which is good. EE to bias are OL at 500V. The electrical check result is good.

UCx 32# P2N target in vault slot 1B is repacked is morning for Ferran to take out his samples( in two small plastic containers) stored in pail last July when Chad did the spent target job. The job went well.  Old pail # is 254# and new pail # is 233. It is put back to 1B in vault.

UCx #2 has been installed onto TM1.

Installation went well except the left leg got bent slightly sometime between testing on the jig and installation onto the module (probably during removal for the argon filled bag). Leg was gentle offered into place and its clearance with the heat shield double checked with both a mirror and goose neck camera. Leg was close to ther heat shield but appeared to have clearance. Anders and John Wong viewed this and deemed it ok. Video images of this clearance were recorded.

Leak checking was also completed successfully:

Base pressure on the leak detector was a constant 0.0 x 10-4, Stable leak rate was an unwavering 0.0 x 10-9.

Both heat sheild circuits were checked twice (starting with the highest gland) and sprayed with a 2 second burst of helium into the test hole in the nut. No reponses were seen after 1 minute an any of the circuits.

Bevan Moss and David Wang performed an electrical check which they relayed to me that the module with target installed had passed.

On Tuesday, January 24th UCx#18 was removed from TM2 and Ta febiad dummy installed. I encountered the same issue mounting the new target as last time. Was able to determine that the issue is the routing of the waterlines to the right-hand (as viewed from the operator) high current tube heater. The lines interfer the the target mounting plate (bottom right hand corner).

UCx#12 has been removed from TM1 and placed in a pail with argon.

Right leg (B) of target is clearly broken.

Containment Box cover re-installed and module ready to move.

The job is done with Matt at NHC. All TGHT and TBHT bolts are torque wrench tight in NHC. HS leak check result is good.

helium pressurized HS line at TCS. No leak.

 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. 

UC#3 was removed from TM1 this morning. Upon removing the oven heater bolts BOTH legs fell demonstrating that both sides of the oven tube have broken off from the central block.

Target was put into a can under argon for disposal after the module is removed from the cell.

The source tray looked to be in very good, clean condition.

 UC#29 in pail 225 was moved to the storage vault, location 6A. Field measured at 22.4 mSv/hr at ~1m. 

UC#26 has been removed from TM4.