Ta#67 Target loaded onto TM2

Leak check passed

Electrical test passed after loosening off target electrode conductor screws, and torqueing by feel 

 TM2 with new target Ta#67 had been electric/leak checked before moving to ITE. See attachment pls.

 TM2 with new target Ta#67 was connected in ITE, all TP are running at their full speed now.

 5 shielding blocks have been transferred from ITW to ITE, MAA has been secured after moving.

 TM2 with spent target Ta#67 was disconnected in ITE. see attachment pls.

 October 1, 2024 - Aaron Tam 

Ta#67 LP-SIS removed from TM2

Ta#67 is sitting in SHC awaiting PIE 

TM2 Containment Box Cover has not been reinstalled 

Photos of target removal and module attached 

 Post Irradiation Examination

October 9, 2024 - Aaron Tam w/ Chad Fisher, Aurelia Laxdal, and Lucas Backes 

PIE conducted by Chad with direction from Aurelia. Aaron and Lucas observing/documenting 

Goal: Thin foil target material is somewhat novel, and we should characterize the differences if there are any. 

Photos of the pre-examined target can be seen on ELOG 2697  on Tuesday October 1, 2024, when the target was removed from TM2

Notes:

• Right most inner/outer target conductor bolts was sitting proud and had threads showing, photo attached
• Some Black deposit was found on the inside of the heatshield directly below the extraction tube, and loose in powder form inside the heatshield. 
• Target tube seems to have more of a crystalline texture than previous examinations.
• When Target tube was being removed, one of the target electrode conductors broke off
• some dimple texture was found on the target tube windows and this was further explored by prying a channel through the length of one side of the tube to get a better look

Target pieces were placed loosely back within the heatshield, and the lid loosely placed back on.

Awaiting pail loading, and move to storage vault

 TM2 with new target Ta#66 had an electrical check and leak check on SHC. 

 TM2 with new target Ta#66 was connected in ITW. 

TM2 has been disconnected in ITW. All water lines are nitrogen purged. Filled 60 psi argon to all Tm2 water lines for module storage in winter shut down.

ITW primary and secondary vacuum vessel leak check and TM2 water lines helium pressure test are done today. No major concern. see attachment for small air to vacuum leak we found.  TM2 water lines helium pressure test is fine.   HS and window line leak rate are 1.4Xe-8 atm.cc/sec. all other water lines are below 3.0XE-9atm.cc/sec.

 The spent Ta#66 was moved from the south hot cell to the spent target vault, it was placed in pail#285 and placed in spot 5B of the vault. The target was 46.2mSv/hr when removed from the south hot cell. See the attached PDF for vault details.

Ta#66 post operation electrical check was done at SHC this Monday. See attachment.

On Jan. 9 we did the PIE on Ta#66. Opened the heat shield and removed the EE. The inside of the heat shield was very black with lots of flakes falling off. The target itself looked overheated, and the container looked pretty bad for a Ta target. The outside of the EE looked perfect but after removing it there was a lot of black stuff on the side and we saw that the Re foil was curled up. Jens said during the runtime that he saw something that looked like a wire in the beam path, so maybe this was it.

 The Ta#66 target was repacked after the parasitic target was removed it was place in a new pail (#290) and place back in spot 5B of the vault. See attached PDF for further details.

 TM4 with new target Ta#65 has been E/L checked at NHCPost.

 TM4 with new target Ta#65 has been E/L checked at NHCPost.

 TM4 was connected in ITE with new target Ta#65 installed. see attachment in detail.

TM4 with spent target Ta#65 was electrical checked right after being moved to SHC. 

TM4 with spent target Ta#65 was disconnected in ITE and moved to SHC.