I connected vacuum system to TM1 and conditioning station and started two turbo pumps yesterday. The pumping an d vacuum readings  are verg good so far(all below 5xE-6 torr). Helium pressure test on heat shield circuit will be fulfilled next week.

Megger checks were exceptionally high (good).  Readings taken less than 2 hours after reading low values from end of run on Nb#6.  Tests on Ta38 will be repeated at conditioning station later.

Connected leak detector to TM1 and CS vacuum system. The vacuum readings on TM1 and CS:PNG1 1.3 xE-6 Torr, IG1 4.7xE-7torr, IG4(diagnostic box)1.5xE-6 Torr. Leak detector base pressure:0.0xE-4 torr, base leak rate: 0.0xE-9 atm.cc/sec. Applied 80 psi helium to heat shield circuit for 5 mins . There is no response on leak detector. The heat shield circuit is leak tight.

 We moved TM1 to ITW today, I connected TM1 to ITW, and started all turbo pumps this afternoon. TP4s is very difficult to bring to 38 KRMP now. I have to use soft start model and tried twice to get this pump started (1.5 hours). This pump always had a difficult start time during the past 2-3 runs. I talked with Friedhelm and we think it should be replaced after this run. I will issue an e-fault on this pump and try to get a new pump from vacuum group. It will take 2 hours to change this pump. I could do this job with another person help. Or, vacuum group could do it. Don can schedule a time for this job before next run. Anyway, it should work fine for this run.  The water interlock check related to TM1 is done. I will do the rest before blocks on. All TM1 water signals are strong and good. All vacuum gauge readings are good so far(below5.0xe-5 torr).

I disconnected TM1 in ITW.  Heat shield line has been purged .

Ta36 was check by Maico and Chad.It was then carried into the anteroom.From the anteroom it was transferred into the south hot cell.

Tm2 has been moved form SHC to ITE. The move is smooth.

September 5, 2024 -AT

• Plastic and clean target tray added to SHC 
• TM4 moved to SHC 
• TM4 containment box cover removed

September 6, 2024 - AT

• Ta#68(Spare) removed from TM4 onto clean tray 
  • top left mounting bolt fell under source tray in containment box - unretrievable
• Ta#68(Spare) moved out of SHC via toolport door 
  • SHC lift table was lower than tool port tunnel by 2". Target-on-Tray slipped back onto lift table when trying to drag it up to the tool port. Target bounced out of one locating pin, but stayed within boundaries of the tray 
  • Water also leaked out from the VCR fitting and on to the SHC lift table, and toolport. 
• Target-on-tray slid into a clean plastic bag, and then into a plastic box. 

 September 9, 2024 - AT

• Ta#68(Spare) taken out of plastic bag and water drained from waterlines
  • Target was rotated in every direction several times until no more water poured out from the VCR joints
• Ta#68(Spare) put back in box without the bag (to promote evaporation) 

 Target Ta#68 loaded onto TM4 

-leak check passed

-Target electrode conductor screws torqued to 130 in-lbs

-electrical check passed

Containment box cover re-installed 

photo attached 

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

 New target Ta#68 is installed on TM4 and be leak/electric checked. Pls see attachment.

October 7, 2024 - Aaron Tam 

Ta#68 HP-SIS checks performed at B1 lab, moved to anteroom, and inserted into SHC via tool port w/ Aaron Schmidt. 

Ta#68 fixed to source tray with 4 mounting bolts in order of: Right manip. holding, Top left, Right manip. removed, Bottom right, Top right, bottom left. w/ Aaron Schmidt and Brady Borrmann

• Motion was smooth, no resistance when positioning onto pins

VCR fittings done up with ample force, leak check passed

Conductor bolts installed in order of: 2 Target electrode conductors (Checked washers), 3 target Inner and outer conductors.

All bolts checked for full contact with mirror and binos. 

Electrical check failed: Dead short (look for David's ELOG for more detail when available) 

Troubleshooting while David is checking resistance: w/ Ferran

• Intermittent success with heavy manipulation of water lines
  • Loosening off Waterline bracket-to-source-tray 
  • Loosening off Bracket to water line bolts 5/32 hex's 
  • Rotating bracket towards operator (effectively raising waterlines in the back upwards) seems to yield more intermittent success, but never passing megger @ 250V 
  • Tube was inadvertently dented when handling the tube in a wrenching motion with manip tong. counterclockwise
• Target removed while David is still on the multimeter (calling for any sign of success)
  • Starting to remove Target in order of: Tightening back waterline-to-bracket 5/32 hex screws, loosening off waterline bracket, loosening off VCR nuts, 2 Target electrode conductor bolts, 3 Target inner and outer conductor bolts, Fixing bolts Top left (dropped below source tray), Bottom right...
    • (At this time David called with some success with electrical check)
  • Reversing course to verify fault has passed, target was reassembled, only finger loose on the VCR nuts.
  • Faults no longer present
  • Target removed
    •  As target was being pulled off source tray locating pins, a piece of ceramic fell onto the source tray just behind window waterlines.

Target taken out of Hotcell by Ferran. New VCR gaskets installed. Target reinserted 

Target installed no issues. Used fixing bolt used to replace dropped one. 

Leak check passed, Electrical check passed

• Notably don't have a photo of reinstalled target or source tray before 2nd install attempt. 

Containment cover reinstalled 

Ceramic piece moved into Pail #285 (suspect this is a very hot piece)

TM2 ready for move to ITE

 TM2 with new target Ta#68 installed is connected in ITE. Pls see form attached.

TM2 with spent target TA#68 was disconnected  in ITE and is being moved to SHC. All water lines are purged for module storage.

  Note: Ta#68 had a difficult install. See E-log ID# 2698 for more info 

First look:

• Containment box cover looks the same as previous (See:ID: 2697)
• Target shows large amount of soot-like deposits (See photos for locations)
• Deposits seem to have been left on parts of the service tray as well ie.: Multipin connector 

Removal:

• Removal was smooth
• Water-line bracket fixing bolts seemed loose even before I put a tool to them 

Eyes of sides:

• Better photos of where deposits are 
• Everything else seems normal 

 Abstract:
This target has seen some irregular beam patterns 
Possibility that the beam hit the walls of the target tube or even the cooling fins
This PIE we want to investigate how the irregular beam physically affected the target 

Related ELOGS: 
ID: 2728
ID: 2698

PIE was performed by Aaron Tam, Directed by Aurelia Laxdal, Observed by Lucas Backes, Special help from Chad Fisher 

External views:

• Windows are clear of any irregularities 
• More pictures of this can be found in RH-ISAC E-log 2728

Internal Views:

• Heatshield internal
  
  • Some discolouration from heat and soot deposits.
  • This seems to be fairly clean to normal amounts - not concerning 
• Target tube
  • tube is bent with the middle higher than the sides
  • Target tube was not removed 9/64ths allen wrench could not be located for this operation 
• Target tube Exit
  • Heatshield windows were punctured to reveal the target tube entraces/exits
  • Entrance is waterline side (ITE)
• Extraction electrode parts were removed from the back off the target
  • These parts look normal
  • some of the extraction electrode would not pull out due to tight fitting parts and the investigation stopped here.

Conclusion: Target physical condition is normal as far as we could investigate 

December 5, 2024 - Aaron Tam w/ help from Chad, Peter and Adam at the Crane  

Hot Cell Prep:

• Tools organized, working space cleared, spot for clean tool to sit placed, Air tool is open and spinning clockwise for tightening 

Loading:

• Ta#68 was loaded into pail# 300
• PEEK seal parasitic assemblies loaded (PEEK seals were removed in ID: 2724)
• Farran had some old samples that also went in (More details to come when Farran sends the info)

Lid/latching:

• This went smoothly

Bail attachment:

• Some difficulty in attaching the Lifting Bail, but went on smoothly with the help of Chad

Notes:

• One of the PEEK seal parasitic Target assembly lids was missed in the loading. This will have to be loaded next time. 
• All parasitic type targets remain in the yellow container shown in photos below. 

Ta#68 spent target was moved in Pail 300 to storage vault location 5A. The dose rate measured at the South Hot Cell was 429 mSv/h at 1m. The target index spreadsheet has been updated and the current vault configuration is attached to this e-log. At this time, the storage vault is getting quite full - it is planned to remove five pails in January 2025.

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

TM4 has been moved from SMP to SHC. The move is smooth.