Model N remote arm serial #9342 tong cable has been un-jammed from between pulley 3D (see picture) and casting (this is an ongoing issue with #9342 and 9352) and cable restrung and exercised to check motion. Tong system is now functional but exhibits excessive slack. Next step will be to check tension of the elevation/twist cables and adjust the pulley block if required (this pulley block houses both the elevation twist cable pulleys and the tong cable pulley 3D which is the site of the persistent cable hop)...I suspect adjusting the tension here will at least slightly improve the slack. In addition I will also investigate repositioning the tong drum screws (the procedure used to adjust the tong opening).

Tom Kauss finished TH crane annual inspection yesterday. The crane woks fine. Tom has this inspection record in his file. The crane inspection tag has been issued for 2025.

Tom Gauss inspected  two target module lifting frames ITA0494-1997-01 and ITA0494-1997-02 yesterday. He certified the use of these two frames for 2025. Inspection tags have been issued and attached to frames. He has inspection record on them. 

Tom Kauss inspected target hall crane below hook attachment pins and plates ITA6550-01 yesterday. He certified the use of these pins and plates for year 2025. The inspection of these pins and plates was in Target hall crane annual check list. It was issued as a calibration index by Isaac Earle in 2022-Feb-08.  After inspection, The inspection tag  was issued. Tom has an inspection record on this job.

ITW/ITW 24VDC electrical connectors for TP BVs MRO has been done. 

HALCW pump ITC:MP1 has been started. water are supplied to both ITE and ITW system. all water signals for individual circuits work fine. no major leak on system. Some small water seeping from small ball valve stems are found in ITW. they will be fixed soon.

Tuesday, February 04, 2025, 10:15

• Started voltage ramp up. Using 250 V increments.

 Tuesday, February 04, 2025, 12:07

• Current has got a bit noisy, starting at around 56.5 kV.
• Currently at 57 kV. Voltage is stable though.
  • Current is about 151 uA on average, with spikes up to 164 uA.
• Held at 57 kV for about 5 minutes, no drops in voltage, so continuing ramp.
• 57.25 kV
  • There is noise in the current each time the voltage is increased. It seems to calm down slowly, with the later noise/spikes being less frequent and lower magnitude.
  • Average current is about 151 uA. Spikes at the start were as high as 169 uA, and after about 8 minutes they are about 160 uA.
  • Held here for about 10 minutes before continuing ramp.
• I will try to get to 58 kV, and then back down to 57 kV to see if the current calms down and there is some sort of conditioning effect. If there is, I'm not sure of the mechanism since nothing is in vacuum.

Tuesday, February 04, 2025, 12:51

• Dropping down to 57 kV, the current was about 150 uA and there were no more noise spikes. Seems like conditioning. Going back to 58 kV and continuing ramp.

Tuesday, February 04, 2025, 13:09

• At 60 kV. Average current is about 187 uA initially, which could just be the average of the noise. It looks like it's dropping a few minutes later. About 10 minutes later, the current is 184 uA. 181 uA after 20 minutes.
• It's been stable for about 30 minutes now. No voltage fluctuations, noise in the current has been the same or decreasing.
• Current is about 177 uA after 80 minutes.

Tuesday, February 04, 2025, 14:36

• It's been 1.5 hours and the voltage has been stable the whole time. All is good. Ramping down.

Tuesday, February 04, 2025, 14:50

• Power supply off
• Data dumped to http://isacwserv.triumf.ca/onlylocal/isacdata/ITW_HV_test_shutdown2025.txt

Wednesday, February 05, 2025, 12:20

• Ed has the voltage already up to 1000 V. Starting further ramp up in 250 V increments.

Wednesday, February 05, 2025, 12:45

• Current was quite stable with basically no noise, and increasing with voltage until 57.5 kV, when the current spiked from 180 uA to a peak of 308 uA and the voltage dropped a little bit for a single data point. Kept it here for a few second and then dropped it back down a couple steps. Currently at 57 kV and the average current is about the same as before (181 uA), but the noise is significantly higher (+/- 10 uA).
• Been at 57 kV for about 5 minutes and no change in the noise. Will try continuing ramp.
• 57.25 kV: Current is ~193 uA with +/- 20 uA noise.
• Gonna go with 250 V step every 5 minutes from here on until 60 kV.

Wednesday, February 05, 2025, 13:17

• Seemed like it was having some trouble at 58 kV, and then at 58.25 kV it was fine for about a minute and just starting sparking constantly, and would not calm down after a minute. Some sparks caused a positive voltage swing up to 65 kV, and with currents as high as ~4000 uA.
• Ramped voltage down in steps back to 56.75 kV. It's still getting about 10-11 sparks per 5 minutes.
• Trying 56.5 kV. 8 sparks in 5 minutes, one positive.
• Trying 56.25 kV. 3 very small voltage drops in 5 minutes.
• Trying 56 kV. No voltage drops in 5 minutes. Current is on average ~204 uA, with +/- 20 uA of noise.

Wednesday, February 05, 2025, 15:02

• 1.5 hours at 56 kV. 2 small sparks over this time. Current was about 195 uA on average with about +/- 20 uA of noise. A spark will usually result in a change of the average current following the spark until the next.
• Ramping down voltage now. The amount of noise decreases quickly with voltage and is basically gone at 53 kV.
• Power supply off.
• Dumped data to https://isacwserv.triumf.ca/onlylocal/isacdata/ITE_HV_test_shutdown2025.txt

Conclusion: ITE seems good up to 56 kV.

Plant Group Gabril.T organized a target pit CAD filter replacement and testing yesterday. My group helped on this job.  small 3T hoist was used for the job.Still the filter needs to be pushed manually on crane to south into position because of crane access limit on south.  The replacement job went well. Later, Gabril reported his test result is good as well.

 Active trash was placed into an unmarked pail and place in spot 7C of the vault the pail measured 321uSv/hr when removed from the SHC. See attached PDF for details.

After removing the previously found extraction electrode and other suspect components the field at the manipulator tongs (in front of the window) in still 3mSv\h.

I have been through every bin etc in the hc and even emptied the dust seperator canister of the vacuum. I will use the camera to look under the table and inside the vacuum cleaner itself...these are really the only possibilities left.