 Wednesday, February 22, 2023, 09:22, Carla Babcock, ITE/ITW, Standard Operation, , , HV testing of ITE/ITW 
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Feb. 16 2023: HV tests done on ITE station. Ramped up to 59kV but was not stable there, current draw was very unstable and was sparking every ~6mins.
Ramped down to 58kV and it was stable there for 3 hours drawing 285uA.
Feb. 24 2023: HV tests done on ITW station. Ramped easily to 60kV with no sparking - suspicious. Has been stable at 60kV for 45mins with no sparks |
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Wednesday, March 01, 2023, 09:27, David Wang, Cooling, Maintenance, , , Two filters on HALCW resin circuit have been replaced.
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Two filters on HALCW resin circuit have been replaced. O-ring 235# were changed on both filter cartridge houses. 25micron 10"x 2.5"
3M cartridge new filters are used. Old filters are not very dirty. They are bagged and stored in vacuum pit. Residual water from cartridge houses
are collected and stored in high active storage jug with sealed cap. No leak on resin circuit before and after the job. |
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Wednesday, March 01, 2023, 09:34, David Wang, Cooling, Maintenance, , , Visual inspection of HALCW for possible small water leak or drip.
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I visually inspected HALCW system including water station section, both target pits, and de-ionizer system. No small leak and drip was found .
The inspection in both target pits will be repeated after flow sensors are replaced. |
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Wednesday, March 01, 2023, 10:01, David Wang, ITE/ITW, Development, , , vacuum pit ventilation upgrade.
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vacuum pit ventilation upgrade was done last week. The jobs include: installed two industrial cooling fans. One is placed in pit on resin
tan cover. Other one is placed on and opening to pit by shielding blocks. They are installed for better air circulation in pit. Also, 2x two
small 20W cooling fans are installed on ITH MP1 and MP1S to low the pump operation temperature. The result is positive. The ventilation status |
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Monday, March 06, 2023, 11:31, Adam Newsome, North Hot-Cell, Repair, , , Spare Telemanipulator: Y-Motion Linear Actuator Repair
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The linear actuator used for the Y-motion motor assistance on the spare telemanipulator was replaced and tested. It was observed around September 2021
that the former one which was installed was causing fuses to blow for the main 120 VAC power supply in the control box. After some troubleshooting, it
was determined that the linear actuator itself did not operate smoothly - it was suspected that this caused motor overload due to additional friction. |
 Tuesday, March 07, 2023, 10:37, chad fisher, North Hot-Cell, Repair, , , Spare Telemanipulator: Y-Motion Linear Actuator Repair
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Adam Newsome wrote:
The linear actuator used for the Y-motion motor assistance on the spare telemanipulator was replaced |
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Wednesday, March 08, 2023, 06:32, David Wang, Cooling, Maintenance, , , HALCW flow sensors replacement.
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HALCW flow sensors replacement job is done. All ITE/ITW(except ITE HS) return line water flow sensors including paddle wheels and coils are replaced.
After job, water interlock signal have been checked in electrical room . Everything works fine. Visually inspections for possible water leak on HCLCW
system have been done as well. one valve on ITE dump return line has a very small water seeping through valve stem. I will watch on it. Other than |
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Wednesday, March 08, 2023, 09:19, David Wang, Cooling, Standard Operation, , , HALCW ITC:MP1/MP2 motor phase current measurement.
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HALCW ITC:MP1/MP2 motor phase current measurement is done by Joel from electrician group. MP1:17.1A/17.2A/16.7A. MP2: 17.9A/17.9A/17.3A.
19.5A is manufacturer notified on full load phase current.on operating instruction manual. |
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Wednesday, March 08, 2023, 13:57, David Wang, Cooling, Standard Operation, , , HALCW ITC:MP1/MP2 pump and motor temerature measurements
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HALCW ITC:MP1/MP2 pump and motor temperature measurements result:
MP1: pump discharging port: 78F, motor rear bearing house:72F , Motor housing 140F(60C). 6F difference between them is less than
15F manufacturer clarified up limit in instruction manual. |
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Monday, March 13, 2023, 11:25, Carla Babcock, ITE/ITW, Development, , , 10kOhm resistors installed in ITE/ITW faraday cages
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On Sept. 14 2022, a 10kOhm 30W resistor was installed in each target station faraday cage, in line with the HV bias supply. This was an effort to reduce
the current draw from the BIAS supply and protect the power supply controls cards which have been repeatedly breaking due to HV sparks (we think). In the
end we still broke cards after the installation, so it doesn't seem to have helped. See below for details on the electrical side: |
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Thursday, March 30, 2023, 14:29, Frank Song, ITE/ITW, Development, , , Preparation of target stations for FEBIAD runs
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Helium cylinder and Argon cylinder are installed in both ITE/ITW faraday cages , regulator for outlet pressure are not set yet.
TO ITE : Argon bottle size 14"L x 4"D with SV2 connected at pressure 900 Psi ( 70 bar ) |
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Monday, April 03, 2023, 07:55, chad fisher, North Hot-Cell, Standard Operation, , , NHC, SHC field check
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NHC is 1.26 mSv/h inside approximately .5m from table surface, between manipulators
SHC 186 uSv/h inside approximately .5m from table surface and between manipulaotrs |
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Tuesday, April 11, 2023, 11:35, chad fisher, North Hot-Cell, Standard Operation, , , NHC fields post sample removal
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The fields in the NHC after removal of Ferran's graphite sample is 238 uSv/h. This again seems to emanate for the items in the 5 gal pail...the copper
tubing from the beam window or, as I mentioned in my previous elog, the peek samples. I did ask about removing these during the graphite sample removal
but was told they were not "hot". |
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Friday, April 14, 2023, 10:01, Adam Newsome, Assembly/Bench Test, Repair, , , Assaying Turntable Repair
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The spent target assaying turntable was repaired. It was tested today with a load exceeding the maximum it would need to handle during rotation (100
kg). It works as expected and is ready for operation. |
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Tuesday, April 18, 2023, 07:28, chad fisher, North Hot-Cell, Maintenance, , , NHC entry summary
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NHC was entered on April 17, 2023 for inspection and maintenance. Summary :
Compressible and non-compressible waste was loaded into a 55 gal drum and removed from the NHC. This same drum will be inserted into the SHC at
a later date to be sorted, compressible waste compressed, and drum filled more. |
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Monday, April 24, 2023, 10:18, David Wang, Cooling, Maintenance, , , HALCW flowmeter transmotters inspetion and calibration.
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ITW, ITE, ITW +ITE total , and low active cooling water return flow meter transmitters are inspected and calibrated. Result:
ITW , PX-750-06Di , Calibrated to 4-20 mA for 0 to 6" H2O DP, linear. Transmitter works fine.
ITE. PX-750-06Di, calibrated to 4- 20mA for 0 to 6" H2O DP, linear. Transmitter works fine. |
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Friday, April 28, 2023, 21:39, David Wang, Conditioning Station, Standard Operation, , , TCS cooling water system was started and tested this Wednesday
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TCS cooling water system was started and tested this Wednesday. Chiller compressor 2 and 3 was in operation cycle twice without issue. TCS:TK2 was refilled
to 28 inches. Water system works fine. system was switched off after test. |
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Tuesday, May 02, 2023, 17:18, David Wang, ITE, Standard Operation, , , ITE 4 turbopumps are started for preoperation check.
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ITE TP3,4, 1S,and 4S were started successfully this afternoon. All pump current draws were below 1.5A . IG1S was switched on. I have no local controller
so TP1 and TP2 on TM4 at MSP can not be checked. IG1S was hard to switch on at first. It timed out and showed error 09 code. I removed the
connector back cap, and it could be switched on after. I will look on this issue. |
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Wednesday, May 03, 2023, 11:04, Adam Newsome, Crane, Maintenance, , , Pail Handling Tool - Annual Inspection
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The pail handling tool which is used to move 5 gallon pails around the target hall was inspected by A. Newsome, N. Jorgenson, and E. Lahe. The main tool
as well as spare were checked for the following items. The tools are in good, working condition. It is noted that some fasteners on the hook assembly were
slightly loose, but have been tightened. |
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Wednesday, May 03, 2023, 13:22, David Wang, ITE, Standard Operation, , , Argon vented ITE station.
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| Argon vented ITE station. ITEVV1S and ITGT SV3 were closed after venting. |
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